96Hub score
One of the largest full-service US agencies, WebFX pairs a very deep in-house bench with published, itemised pricing tiers — unusual transparency at this scale.
International SEOTechnical SEOLocal SEOContent Marketing
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SEO companies in United States
52 agencies across 21 states, each tied to the state it actually operates from. Retainers shown in USD.
Languages
English, Spanish
Currency
USD ($)
Domain convention
.com (also .us)
Search engines
Google, Bing
Companies listed
52
Across 21 states
Median retainer floor
$5k/mo
$500/mo – $25k/mo
Median tenure
19 yrs
Longest-running since 1966
Hub Score range
62–96
Median 82 of 100
Highest-scoring companies in United States
95Hub score
A long-established Colorado agency with a large in-house team and its own analysis tooling for content and technical audits.
International SEOTechnical SEOContent MarketingPaid Media
95Hub score
A hospitality-heavy digital firm with its own CMS and schema platform, strong on structured data at multi-location scale.
International SEOTechnical SEOLocal SEOEnterprise SEO
94Hub score
A data-heavy consultancy with a strong analytics engineering culture — big-query pipelines, custom dashboards and a public knowledge-sharing habit.
International SEOTechnical SEOEnterprise SEOAnalytics
94Hub score
A large independent challenger agency where SEO sits inside a full-funnel media practice with shared incrementality measurement.
International SEOEnterprise SEOPaid MediaContent Marketing
92Hub score
An Iowa-founded full-service agency that grew nationally while keeping web development and SEO tightly coupled.
Technical SEOContent MarketingPaid MediaWeb Development
Browse every state
Numbers show how many companies are currently listed. Empty states are open — tell us who belongs there.
Northeast
Midwest
South
Side-by-side comparison
The 12 highest-scoring United States listings on the facts buyers screen first: base, age, headcount, entry price and pricing model.
| Company | Based in | Founded | Team | Retainer from | Pricing | Hub Score |
|---|---|---|---|---|---|---|
| WebFX | Harrisburg, PA | 1996 | 500+ | $3k/mo | Monthly retainer | 96 |
| Intero Digital | Colorado Springs, CO | 1996 | 150-250 | $5k/mo | Monthly retainer | 95 |
| Milestone Inc | Santa Clara, CA | 1998 | 150-250 | $6k/mo | Monthly retainer | 95 |
| Seer Interactive | Philadelphia, PA | 2002 | 150-250 | $10k/mo | Monthly retainer | 94 |
| Wpromote | El Segundo, CA | 2001 | 500+ | $20k/mo | Monthly retainer | 94 |
| Spinutech | Cedar Falls, IA | 2000 | 150-250 | $4k/mo | Monthly retainer | 92 |
| Terakeet | Syracuse, NY | 2001 | 150-250 | $25k/mo | Monthly retainer | 92 |
| Thrive Internet Marketing Agency | Arlington, TX | 2005 | 150-250 | $2k/mo | Monthly retainer | 92 |
| Bounteous | Chicago, IL | 2003 | 500+ | $25k/mo | Retainer or project | 90 |
| Straight North | Downers Grove, IL | 1997 | 50-150 | $2.5k/mo | Monthly retainer | 90 |
| Nebo Agency | Atlanta, GA | 2004 | 150-250 | $10k/mo | Monthly retainer | 89 |
| Amsive | New York City, NY | 2010 | 250-500 | $15k/mo | Monthly retainer | 87 |
What retainers actually start at in United States
Median entry retainer is $5k/mo, with the range running $500/mo to $25k/mo. These are floors, not averages of what clients spend — scope, competitiveness and content volume move the real number well above them.
$1.5k–$5k/mo24 companies · 46%
$5k–$10k/mo15 companies · 29%
$10k–$20k/mo8 companies · 15%
$20k+/mo4 companies · 8%
$20k+/mo4 companies · 8%
Floors shown in USD, as published or disclosed by each company.
How the Hub Score on this page is calculated
100 points across five factors, each computed from a fact you can check yourself. Nothing here is bought, voted on or averaged from review sites.
- 25 ptsTenure — round(years trading ÷ 25 × 25), capped at 25. 25+ years = full marks. Surviving multiple algorithm eras and at least one recession is the most reliable public signal that delivery is repeatable rather than lucky.
- 20 ptsService breadth — 3 points per in-house discipline, capped at 20 (7+ services = full marks). Each discipline you have to buy elsewhere adds a hand-off. Breadth is not automatically better, but it is a fact buyers price in.
- 20 ptsVertical depth — 4 points per industry served, plus an 8-point focus bonus when the company serves 2 or fewer. Capped at 20. A clear position scores well at both ends: deep specialists know a vertical's SERP, broad shops carry pattern library across many. Vague middle ground scores lowest.
- 20 ptsPricing transparency — 8 points for a monthly-retainer model (6 for other models) + 7 for a stated retainer floor + 5 for a live public site. Agencies that will not name a number until the third call cost buyers weeks of qualification time.
- 17 ptsDelivery scale — Team size mapped to a curve: 10-20 → 8, 20-50 → 11, 50-150 → 14, 150-250 → 16, 250-500 → 17, 500+ → 15. The curve peaks in the mid-hundreds: enough bench depth to survive staff churn, small enough that senior people still touch the account. Very large shops lose a point for delivery distance.
In-house services across United States
Share of listed companies delivering each discipline themselves. Gaps here are the work you would need a second vendor for.
- Technical SEO48 · 92%
- Content Marketing38 · 73%
- Paid Media37 · 71%
- Analytics26 · 50%
- Local SEO22 · 42%
- International SEO19 · 37%
- Web Development19 · 37%
- Enterprise SEO12 · 23%
Where the vertical depth sits
Industries the listed companies document real work in — useful when you want a shop that already knows your SERP.
- Healthcare33 · 63%
- Ecommerce27 · 52%
- Manufacturing & B2B20 · 38%
- Home Services18 · 35%
- Financial Services17 · 33%
- SaaS & Technology17 · 33%
- Hospitality & Travel16 · 31%
- Legal15 · 29%
What United States actually demands
The deepest agency market in the world and the most fragmented: national enterprise shops, regional generalists and single-vertical specialists all compete for the same queries.
- State and metro-level competition varies enormously — a Texas or Florida local pack is a different fight to a Wyoming one.
- Spanish-language search is a real second market inside the US; es-US pages need their own hreflang treatment, not a copy of es-MX.
- Retainers are quoted excluding tax and usually monthly, with 6–12 month initial terms.
- Multi-location brands need location pages plus verified Google Business Profiles per branch, not a single national page.
SEO companies in United States: common questions
- How do you decide which SEO companies get listed in United States?
- A company is listed when we can verify that it operates from a specific state in United States, that it delivers SEO as a core service rather than an upsell, and that its founding year, headcount band and pricing posture are documented publicly. Listings are compiled editorially — no company can buy an entry or a position.
- What is a normal SEO retainer in United States?
- Retainer floors on this page are published in USD and represent the minimum engagement each company accepts, not what a typical client spends. Screen on scope: monthly technical work, content volume, link acquisition and reporting cadence. Two identical floors can hide very different amounts of senior time.
- Should I hire an agency in my own state?
- For local and multi-location search, a nearby agency that knows the regional press, directories and language nuance has a real advantage. For national, ecommerce or international programmes, discipline depth beats proximity. Because every listing is tied to its true operating base, you can filter deliberately either way.
- How often is the United States directory updated?
- Market facts — language, currency, domain conventions, dominant engines — are re-checked on a fixed cycle, and each profile carries its own review date. New companies are added as research is completed rather than in bulk, so counts move gradually.