Discover the top SEO agencies in United States. Compare services, reviews, and find the perfect agency for your business.
Philadelphia, United States
Based in the Philadelphia area of Pennsylvania, with a listed office in Marlton, New Jersey, Zoompoint Technology works with small and mid-sized busi…
View Profile
Boston, United States
A Boston-based marketing agency founded in 2004, Zozimus works with a small, senior team of strategists, technologists and publicists serving clients…
View ProfileDunedin, United States
Zucker & Zucker began as a father-and-son operation in Dunedin, Florida, in 2000, and has since relocated its office to Mount Carmel, Pennsylvania, w…
View Profile
Dallas, United States
Headquartered in the Dallas area (with an office listed in Plano, Texas), Zunch is a digital marketing agency with additional office locations in Mex…
View Profile
Anaheim, United States
Based in Anaheim, California, Zupo works with brands navigating the shift from traditional Google-first search to AI-driven discovery. The team, size…
View Profile
New York, United States
A small team based in New York, New York, ZURV works with businesses seeking a combined approach to marketing and technology rather than a single spe…
View Profile
Houston, United States
Based in Houston, Texas, Zyne Ventures operates as a technology and digital marketing firm serving businesses across a range of industries, with stat…
View Profile
The complete migration playbook: what to freeze before launch, how to build a redirect map that actually holds, what to test on the staging site, and how to read the first eight weeks after go-live.
2026-08-02 · 12 min read
How B2B search really works: bottom-of-funnel pages before blog volume, comparison and alternatives content, product-led assets, and attribution that survives a six-month cycle.
2026-08-02 · 11 min read
When template-generated pages work, when they get ignored, and how to build a programmatic set that survives quality updates: real data, real demand, real internal linking.
2026-08-02 · 11 min read
This directory lists 13,527 agencies in United States, spread across 2,422 cities. 12,030 of them publish a direct contact (email or phone). The best-represented cities are New York (330), San Francisco (315), Los Angeles (299).
| Team size | United States | What it means |
|---|---|---|
| 1-10 | 10,059 (74%) | One contact, often the founder. Responsive, limited capacity. |
| 11-50 | 1,711 (13%) | Specialists per discipline. The most common trade-off. |
| 51-200 | 29 (0%) | Several teams, formal process, higher budgets. |
| 200+ | 129 (1%) | International structure, enterprise accounts. |
Across the 13,527 agencies in this country: SEO (97%), Web Design (66%), Social Media (51%), SEA/PPC (51%), Web Development (40%), Content Marketing (37%). SEO leads with 13,148 agencies.
Stated engagement floors in United States range from $1,000+ to $100,000+. The most common is $1,000+ (2,787 agencies). That figure is an entry floor, not a price: it says what size of engagement the agency will take on, which stays the fastest filter for ruling out the ones that do not match your scale.
The 13,527 agencies on this page are ordered by how complete their listing is, not by payment: nobody buys a position here. The information comes from each agency's own website, checked as live. An agency can claim its listing to correct or complete it.
Should you pick an agency based in United States? Proximity matters most for local SEO and the language your content is written in. Here, English and Spanish are the most declared working languages. For an international site, where the agency sits matters less than its experience in your market.
Small or large agency? 74% of agencies here have fewer than ten people, against 158 above fifty. A small team means direct access to the people doing the work; a large one absorbs heavier programmes without depending on one person.
What to check before signing? Ask for measured results on a site comparable to yours, who actually does the work, and what happens when the contract ends: deliverables and access must stay yours. An agency that will not show its method is selling a black box.
