75+ Marketing Agency Statistics for 2027 (Industry Size, Growth & Trends)
By Tushar Dey
18 min read
This page collects the marketing agency statistics we actually use when we rank agencies and talk to agency owners: how big the industry is, how many agencies exist, what they earn, who is buying them, how clients are cutting or growing budgets, and how fast AI is changing the work. Every number links to the company or research body that produced it.
For these marketing agency statistics we favoured government data (BLS, Census-based sources), holding company filings and named agency surveys from 2025 and 2026. When a figure comes from a vendor surveying its own customers, we say so. When we couldn’t trace a popular stat back to its original source, we left it out. You’ll find a list of what we dropped in the caveats section.
Last updated: November 2026. The title says 2027 because this is the data you’ll be planning with next year, but each figure carries its real year. We refresh these marketing agency statistics when IBISWorld, Promethean, Gartner and the holding companies publish new editions.
Key marketing agency statistics (quick list)
- US advertising agencies will bring in an estimated $88.7 billion in 2026, up 4.7% a year since 2021 (IBISWorld, 2026).
- There are 114,014 advertising agency businesses in the US in 2026, 4.4% more than in 2025 (IBISWorld, 2026).
- The average US agency has just 2.9 employees (IBISWorld, 2026).
- Global advertising revenue is forecast to grow 8.9% to $1.3 trillion in 2026 (WPP Media, June 2026).
- Omnicom closed its takeover of Interpublic on 26 November 2025, creating a group with more than $25 billion in pro forma revenue (Omnicom, 2025).
- The average digital agency grew revenue 7.5% in 2025 and earned a 13% net margin (Promethean Research, 2026).
- Agencies take 20.7% of the average enterprise marketing budget, and 39% of CMOs planned to cut labor costs and agency allocations in 2025 (Gartner, 2025).
- AI is in use at more than 99% of ad agencies, yet nine in 10 agency professionals think it threatens their agency’s main revenue streams (Basis, 2026).
- 55 marketing agencies were bought by holding groups and consultancies worldwide in 2025, and 67% of them had fewer than 100 staff (COMvergence, 2026).
- Advertising, promotions and marketing managers earned a median $165,780 in 2025, and the job is projected to grow 6% by 2035 (BLS, 2025).
Marketing agency industry statistics: size and growth
US advertising agency market size
IBISWorld’s 2026 report on advertising agencies in the US puts industry revenue at $88.7 billion this year. Revenue has grown at 4.7% a year between 2021 and 2026, and IBISWorld expects growth to slow to 2.5% a year, reaching $100.2 billion by 2031.
The slowdown matters more than the headline. A market growing 2.5% a year barely beats inflation, so an agency growing faster than that is taking share from someone, usually by specialising or by winning work that used to go to the big networks.
A practical use for this number: if your agency grew 3% last year, you didn’t really grow. You kept pace with a slow market. Measure yourself against the market rate rather than only against last year’s revenue, and with the 7.5% average that independent digital agencies posted in 2025 (more on that below).
The global ad market agencies sell into
Agency revenue is a slice of a much bigger pie: what brands spend on media. WPP Media’s June 2026 This Year Next Year forecast expects global advertising revenue to grow 8.9% in 2026 to $1.3 trillion, excluding US political ads. It also estimates that Alphabet, Meta and Amazon take 57.6% of all ad revenue outside China.
Read those two numbers together. Ad spend is growing fast, but more of it flows straight into self-serve platforms, so the money passing through agencies grows far more slowly than media itself. That’s why marketing agency statistics on revenue and ad spend forecasts often seem to disagree.
| Metric | Figure | Year | Source |
|---|---|---|---|
| US advertising agency revenue | $88.7B | 2026 (est.) | IBISWorld |
| Annual revenue growth, 2021–2026 | 4.7% | 2021–2026 | IBISWorld |
| Forecast revenue | $100.2B | 2031 | IBISWorld |
| US advertising agency businesses | 114,014 | 2026 | IBISWorld |
| People employed by US ad agencies | 325,536 | 2026 | IBISWorld |
| Global ad revenue | $1.3T (+8.9%) | 2026 (forecast) | WPP Media |
| Share of ad revenue taken by Alphabet, Meta, Amazon (ex-China) | 57.6% | 2026 | WPP Media |
How many marketing agencies are there, and how big are they?
Number of marketing agencies in the US (most are tiny)
IBISWorld counts 114,014 US advertising agency businesses in 2026, with the count growing at 6.7% a year since 2021. Its employment data puts total industry employment at 325,536, which works out to an average of 2.9 employees per business.
So the number of agencies is growing faster than revenue (6.7% vs 4.7% a year). In practice that means more freelancers and two-person shops registering as businesses, and a thinner average slice of revenue for each one. Divide revenue by headcount and you get roughly $272,000 per worker (our arithmetic, not an IBISWorld figure), but that average is pulled up by large media buyers that bill big pass-through costs.
Specialists dominate the independent end of the market. In Promethean Research’s 2026 State of Digital Services report, 86% of agencies described themselves as specialists. If you’re shortlisting partners, our agency directory lets you filter by specialty rather than browsing generalists.
Average revenue by agency type
Promethean’s 2026 sample shows the scale of independent digital agencies. The average agency brought in $4.43 million, but marketing-focused agencies averaged $1.96 million, far below development shops.
Source: Promethean Research, How Profitable Are Digital Agencies? (April 2026, 2025 data). Averages, not medians; sample size not published.
For a buyer, this is a reality check. At a $2 million agency, a $5,000-a-month client is about 3% of revenue and gets senior attention. At a holding company network, the same account is a rounding error. Our ranking of marketing agencies for small businesses leans toward agencies of that size for this reason.
Agency employment, hiring and salaries
How many people work in agencies
Employment is one of the few marketing agency statistics backed by government payroll data, but counts depend on how wide you draw the line. The BLS Occupational Employment and Wage Statistics for May 2023 put employment in advertising, public relations and related services (NAICS 5418) at 500,130, with a mean annual wage of $88,310. Data USA, which uses Census survey data and a broader industry group, counts 574,827 workers in 2024, 52.9% of them women, with an average wage of $106,249. Either way, it’s roughly half a million people. We’d quote the BLS figure, because it comes from employer payroll surveys, but note its age: May 2023 is the most recent industry-level table we could open.
What agency roles pay
The BLS Occupational Outlook Handbook reports a median of $165,780 for advertising, promotions and marketing managers in 2025, across 454,800 jobs, with 6% growth (about 27,900 jobs) projected from 2025 to 2035. That headline figure is mostly marketing managers, though. Split out, advertising and promotions managers earned a median of $133,660 across 33,200 jobs, and BLS projects that role to shrink 4% (about 1,200 jobs) over the same decade. Agencies employ 27% of them and pay a median of $133,550, almost exactly the all-industry rate.
The split tells you where the work is moving. Marketing management jobs are growing; the classic agency-side advertising manager role is not. If you’re hiring for an agency, expect to compete with in-house teams for the same marketing managers.
| Role (inside advertising, PR & related services) | Employment | Median hourly wage | Approx. annual (×2,080 hrs) |
|---|---|---|---|
| Advertising sales agents | 48,890 | $33.65 | $70,000 |
| Market research analysts & marketing specialists | 40,760 | $31.48 | $65,500 |
| Public relations specialists | 38,000 | $35.70 | $74,300 |
| Graphic designers | 23,530 | $27.39 | $57,000 |
| Art directors | 15,260 | $49.40 | $102,800 |
| Marketing managers | 12,490 | $70.42 | $146,500 |
| Advertising & promotions managers | 7,950 | $71.79 | $149,300 |
If you run an agency, this table is the floor for your salary bands. If you’re a client, it explains why cheap retainers rarely buy senior time: under the common rule of thumb of billing staff at two to three times their cost, a $65,000 specialist has to bring in $130,000 to $195,000 a year.
Headcount is shrinking at the top
Omnicom and IPG together cut about 8,200 roles in 2025, a 6.4% drop, according to Campaign Asia. Promethean found average independent agency headcount fell 2% in 2025, while turnover improved to 19%. Basis’s 2026 Advertising Agency Report found that nearly 40% of agencies made layoffs in the previous 12 months.
Holding companies, consolidation and agency M&A
The big networks after Omnicom–IPG
The biggest agency story of the past year: Omnicom completed its acquisition of Interpublic on 26 November 2025. Omnicom’s full-year 2025 results showed $17.3 billion in revenue, with only about a month of IPG included, and a doubled cost-savings target of $1.5 billion, $900 million of it in 2026.
| Group | 2025 revenue measure | Organic / LFL growth | Margin |
|---|---|---|---|
| Omnicom (incl. IPG from late Nov.) | $17.3B revenue; >$25B pro forma | Not comparable (merger year) | 15.6% adjusted EBITA margin (non-GAAP) |
| Publicis Groupe | €14.55B net revenue | +5.6% | 18.2% operating margin |
| WPP | £10.18B revenue less pass-through costs | −5.4% | 13.0% headline operating margin |
| Havas | €2.78B net revenue | +3.1% | 12.9% adjusted EBIT margin |
The gap between winners and losers is wide. Publicis grew 5.6% organically while WPP shrank 5.4% like-for-like and its headline margin fell from 15.0% to 13.0%. WPP’s own explanation is unusually blunt: its top 25 clients cut spend 4.1% like-for-like, it lost assignments in the first half, and management pointed to “excessive organisational complexity” in its own structure. Big clients move whole accounts at once, so one lost pitch shows up in a network’s numbers for a year or more.
For independents, network turmoil is a sales opportunity. When a holding company is cutting costs (Omnicom is targeting $900 million of savings in 2026 alone), mid-sized clients often see their account team change, and that is when they take pitch meetings.
Who is buying agencies
COMvergence, which tracks acquisitions by the big holding groups and consultancies, counted 55 marketing agency acquisitions in 2025, a modest rise on 2024 and well below the 2016 peak, as reported by BestMediaInfo. Across 845 deals from 2016 to 2025, digital and data businesses made up 64% of acquisitions. In 2025, 67% of acquired firms had fewer than 100 employees. The 2025 deals added about $13.1 billion of revenue, but $10.7 billion of that was the single Omnicom–IPG merger, so the rest of the market was a stream of small purchases.
Source: COMvergence 2025 marcom acquisitions study, via Manifest Media (Feb 2026). Covers acquisitions by holding groups and consultancies, not every agency sale. The published table sums to 56 against a stated total of 55.
If you own an agency and think about selling, the pattern is clear: buyers want data and AI capability, and they buy small. A sub-100-person specialist is a more typical target than a 300-person full-service shop.
Agency growth and profitability statistics
Promethean Research’s benchmark is the best independent source of marketing agency statistics on finances we know of. Its 2026 report found average revenue grew 7.5% in 2025, up from a weak 2024, while the average after-tax net margin slipped to 13% from 14%. The long-run average since 2015 is about 15%. Smaller agencies earn more per dollar.
Source: Promethean Research, How Profitable Are Digital Agencies? (April 2026). After-tax net margin, full-time staff.
The AgencyAnalytics 2026 benchmarks survey paints a rosier picture: 87% of agency leaders held or improved operating margins year over year, and 68% reported operating margins above 20%. Don’t mix the two. Operating margin is measured before owner pay adjustments and tax, so it always looks bigger than Promethean’s net figure.
If you own an agency, here is how to use these numbers as a quick health check against your own books:
| Metric | Benchmark | Source | Worry if you’re… |
|---|---|---|---|
| Revenue growth, 2025 | 7.5% average | Promethean Research | Below 2.5% (the market rate) |
| Net margin after tax, 2025 | 13% average; ~15% long-run | Promethean Research | Below the average for your size band |
| Net margin, 0–9 staff | 19% | Promethean Research | Under 12% at this size |
| Staff turnover, 2025 | 19% | Promethean Research | Losing more than 1 in 5 people a year |
| Operating margin above 20% | 68% of agencies | AgencyAnalytics 2026 | Under 20% before owner pay and tax |
| Agencies that don’t discount to win work | 67% | AgencyAnalytics 2025 | Discounting most new proposals |
Services clients want from marketing agencies
Paid media is still the backbone. In the AgencyAnalytics 2025 Marketing Agency Benchmarks Report (220+ agency leaders), 89% named paid advertising as a core service. A year later, the hot new request was AI search: 66% of agencies in the 2026 edition reported more client demand for AI search services, a category AgencyAnalytics notes barely existed a year earlier. The same 2025 report had 73% of leaders agreeing that generative AI has changed SEO, and SEO and web design had shared the top service spot the year before paid ads took over.
On the buyer side, Clutch’s December 2025 budget survey found 60% of small businesses planned to raise marketing spend in 2026. Respondents planned bigger investments in content marketing and SEO (45%), digital advertising (43%) and branding and creative (41%). A separate Clutch survey of 1,000 business decision makers found 26% planned to outsource digital marketing in the next year.
Demand for AI search work is real but young, and plenty of agencies rebranded faster than they built the skills. Ask for case studies tied to AI citations or referral traffic. Our rankings of GEO agencies and AI marketing agencies are a starting point, and the SEO agency statistics cover the search side in more depth.
How clients buy, cut and replace agencies
Agencies’ share of the marketing budget
Gartner’s 2025 CMO Spend Survey of 402 marketing leaders found budgets flat at 7.7% of company revenue. Agencies took 20.7% of that spend, as reported by Chief Marketer, and 39% of CMOs said they planned to cut labor costs and agency allocations. Gartner’s 2026 survey (401 leaders) found budgets edged up to 7.8% of revenue, with 15.3% of marketing budgets going to AI.
Put the 2025 split in money terms. A company with $500 million in revenue spending 7.7% on marketing has a $38.5 million budget, and roughly $8 million of it goes to agencies. Paid media is the only line Gartner says has grown over five years, which is why media-led agencies have held up better than pure creative shops.
Source: Gartner 2025 CMO Spend Survey, n=402, via Chief Marketer. Marketing leaders in North America, the UK and Europe. Shares sum to 95.6%; the remainder is other spend.
In-housing hasn’t replaced agencies
The ANA’s 2023 in-house agency study (162 respondents) found 82% of member companies run an in-house agency, up from 42% in 2008. Yet 92% still work with external agencies, and 65% had moved some work in-house over the previous three years. Basis found the same pressure on the agency side: 65.3% of agencies had a client move work in-house in the past 12 months.
Brands do both. They keep routine production in-house and buy specialist skills and extra capacity from outside, and the ANA found in-house teams handle an average of 61% of the work at companies that also use agencies (58% in 2018). For an agency, that means the work you’re likely to keep is the work an in-house team can’t staff for. We compare the two models in detail in our agency vs in-house marketing statistics, and the freelance marketing statistics cover the third option many companies now mix in.
Small business churn
vcita’s 2025 SMB Marketing Report, a survey of 500 US small businesses, found 52% outsource their marketing. Of those, 40% end up dropping or switching agencies, 56% of that churn happens 6 to 12 months into the relationship, and 60% of leavers cite a lack of return on investment.
Months 6 to 12 are when setup work ends and clients start asking where the leads are. If you run an agency, plan the first quarter so there’s a measurable result on the table before month six, and report against the client’s revenue or pipeline, not impressions. If you’re the client, agree what “working” means in writing before you sign, so the six-month review isn’t a vibe check. Our client retention and churn statistics go further, and a solid marketing reporting tool makes that conversation easier.
AI adoption in marketing agencies
Of all the marketing agency statistics on this page, the AI numbers move fastest from one year to the next. Nearly every agency uses AI; far fewer have rebuilt the business around it. Basis found AI in use at more than 99% of agencies, with 77.7% planning to increase AI investment over the next year. Promethean found only about one-third of independent digital agencies had implemented AI across the business, with another quarter in progress.
- 79% of agencies save five or more hours a week with AI, and 38% already use agentic AI for workflow automation (AgencyAnalytics, 2026).
- In 2025, 58% said AI had cut content creation time and 42% had recovered 5 to 10 billable hours a week (AgencyAnalytics, 2025).
- Nine in 10 agency professionals believe AI threatens their agency’s primary revenue streams, and the share of AI pessimists rose from 19.9% in 2025 to 32.0% in 2026 (Basis, 2026).
- Only 30% of CMOs say their organisation is ready to scale AI, even as they put 15.3% of budget behind it (Gartner, 2026).
Saved hours are only good news if you bill by value or outcome. An hourly-billing agency that saves 5 hours a week per person is cutting its own revenue unless it fills those hours or reprices. The full picture is in our AI in marketing agencies statistics.
Agency industry trends: the biggest challenges agencies report
The mood inside agencies is worse than the margin data suggests. In Basis’s 2026 survey of more than 200 agency professionals, optimism about digital advertising fell to 48.8%, from 62.8% two years earlier. Senior leaders were the gloomiest group: 91.5% of them think the traditional agency model is broken or heading that way.
Source: Basis 2026 Advertising Agency Report, 200+ agency professionals. Optimism was 62.8% in 2024.
Other surveys agree:
- Budgets and AI, tied. In a Digiday+ Research survey of 62 agency professionals, 38% named reduced client budgets and 38% named the effects of AI as the biggest challenge for 2026. A year earlier, budgets led at 47%, scope creep came second at 16%, and only 11% worried about AI. That jump from 11% to 38% in twelve months is the sharpest year-on-year shift among the surveys on this page, though with 62 respondents it’s a signal, not a measurement.
- Winning clients. 34% of agency leaders called client acquisition their hardest operational problem (AgencyAnalytics, 2025). The agency lead generation statistics show where new business comes from.
- Proving revenue. 55% of agencies say the question clients ask most is whether marketing can be tied to revenue (AgencyAnalytics, 2026). On the client side, 34% of small-business marketers say proving revenue impact is their biggest challenge (Clutch, 2025).
Many smaller agencies handle the capacity side of this by subcontracting fulfilment, which our white label and outsourcing statistics cover.
How to read these marketing agency statistics
- “Agency” means different things. IBISWorld counts NAICS 541810 advertising agencies; BLS covers the wider 5418 group, which adds PR firms and media buyers. Neither neatly matches “digital marketing agency”.
- Market sizes are estimates. IBISWorld revises its model every edition; an earlier 2025 edition put the same industry at $78.3 billion. Quote the year and edition.
- Averages hide the spread. A few large agencies pull Promethean’s averages up; most agencies are smaller than the “average” one.
- Holding company numbers aren’t like-for-like. Net revenue and revenue less pass-through costs are different measures.
- What we dropped. We left out widely shared figures we couldn’t trace to a primary source, including a “$1 trillion digital agency market by 2030” projection credited to Grand View Research, agency churn rates attributed to Focus Digital, and revenue-per-employee benchmarks that only appear on roundup sites.
We apply the same skepticism to agency claims when we build our rankings. You can read how in how we review agencies.
More marketing agency statistics by topic
This page is the hub for our series of marketing agency statistics. Each post below goes deeper on one topic:
- Agency pricing statistics
- Agency profit margin statistics
- Agency client retention and churn statistics
- AI in marketing agencies statistics
- SEO agency statistics
- Agency vs in-house statistics
- White label and outsourcing statistics
- Agency lead generation statistics
- Freelance marketer vs agency statistics
FAQ
How many marketing agencies are there in the US?
IBISWorld counts 114,014 advertising agency businesses in the US in 2026, up 4.4% on 2025. The count includes very small firms: the average agency has 2.9 employees.
How big is the marketing agency industry?
US advertising agencies will generate an estimated $88.7 billion in 2026, according to IBISWorld, rising to $100.2 billion by 2031. Globally, they sell into an ad market WPP Media expects to reach $1.3 trillion in 2026.
Is the marketing agency industry growing?
Yes, slowly and unevenly. US agency revenue grew 4.7% a year from 2021 to 2026, and the average independent digital agency grew 7.5% in 2025 (Promethean Research). Among the big networks, Publicis grew 5.6% organically in 2025 while WPP shrank 5.4% like-for-like.
How much does the average marketing agency make?
Independent digital agencies averaged $4.43 million in revenue in 2025, and marketing-focused agencies averaged $1.96 million. The average after-tax net margin was 13%: 19% for agencies with fewer than 10 staff and 8% for those with 50 or more (Promethean Research, 2026).
How many marketing agencies use AI?
Almost all of them. Basis found AI in use at more than 99% of ad agencies in 2026, but only about a third of independent agencies have implemented it across the whole business (Promethean Research).
What percentage of a marketing budget goes to agencies?
About a fifth. Gartner’s 2025 CMO Spend Survey of 402 marketing leaders found agencies took 20.7% of marketing budgets, behind paid media (30.6%), martech (22.4%) and in-house labor (21.9%). 39% of those CMOs planned to cut labor costs and agency allocations.
Looking for a partner? Browse our ranking of the best digital marketing agencies, or if you run one, submit your agency for review.
Sources
All the marketing agency statistics on this page come from the sources below.
- IBISWorld: Advertising Agencies in the US, Industry Analysis 2026
- IBISWorld: Advertising Agencies in the US, Number of Businesses (2026)
- IBISWorld: Advertising Agencies in the US, Employment Statistics (2026)
- WPP Media: This Year Next Year, Midyear 2026 Global Forecast (June 2026)
- US Bureau of Labor Statistics: Occupational Outlook Handbook, Advertising, Promotions, and Marketing Managers
- US Bureau of Labor Statistics: OEWS, Advertising, Public Relations, and Related Services, May 2023
- Data USA: Advertising, Public Relations & Related Services (2024)
- Omnicom: Omnicom Completes Acquisition of Interpublic (November 2025)
- Omnicom: Fourth Quarter and Full Year 2025 Results (February 2026)
- Campaign Asia: Omnicom and IPG Jointly Cut Headcount by 8,200 in 2025
- WPP: Strategy Update and 2025 Preliminary Results (February 2026)
- Publicis Groupe: 2025 Full Year Results (February 2026)
- Havas: 2025 Full Year Results (February 2026)
- COMvergence marcom acquisitions study 2016–2025, reported by BestMediaInfo (February 2026)
- COMvergence 2025 acquirer ranking, reported by Manifest Media (February 2026)
- Promethean Research: How Profitable Are Digital Agencies? (April 2026)
- Promethean Research: 2026 State of Digital Services Report
- AgencyAnalytics: 2025 Marketing Agency Benchmarks Report
- AgencyAnalytics: 2026 Marketing Agency Benchmarks Report (June 2026)
- Basis: 2026 Advertising Agency Report (April 2026)
- Digiday+ Research: Agencies Punt Budget Growth Expectations to 2027 (April 2026)
- Gartner: 2025 CMO Spend Survey (May 2025)
- Chief Marketer: Gartner, 39% of CMOs Plan to Reduce Labor Costs and Cut Agency Allocations (2025)
- Gartner: 2026 CMO Spend Survey (May 2026)
- ANA: The Continued Rise of the In-House Agency, 2023 Edition
- Clutch: Outsourcing Marketing (2025, updated 2026)
- Clutch: Marketing Budget Planning 2026 Survey (December 2025)
- vcita: 2025 SMB Marketing Report (July 2025)
