Top 13 SEO companies in the US
13 SEO companies in the US that are actually operating, each checked against its own site and a second source. What they do, who it’s for, and the one reason it made the list. No pay-to-rank.
- 01
- San Diego, CA
- Since 2012
- 51–200 people
Siege Media is a content marketing and SEO agency founded in San Diego in August 2012 by Ross Hudgens, with offices in Austin, Chicago, New York and San Francisco and roughly 80 staff. It produces search-targeted content, design assets, digital PR and generative-engine optimisation for fintech, e-commerce, SaaS and health brands, and states its work is worth about $12.4 million a month in client traffic value. It is privately held and a 2022 Inc. 5000 honoree.
Why it’s hereInc. 5000 honoree with a published client list including Zillow, Airbnb, HubSpot and TransUnion and a practice built entirely on organic search.
Known forSEO-driven content marketing · generative-engine optimisation · digital PR · SEO consulting · design
Named clientsTransUnion, Chime, Zillow, Airbnb, HubSpot, Asana, Zapier, Zendesk, Adidas, Instacart
Checked against siegemedia.com, siegemedia.com, inc.com
- 02
- San Francisco, CA
- Since 2013
Victorious is an SEO agency founded in 2013 and based in San Francisco, with staff across Austin, Boston, Chicago, Denver, Washington, Los Angeles, New York, Philadelphia, Phoenix, Portland, San Diego and Seattle. It provides on-page and technical SEO, keyword research, audits, migrations, link building, answer-engine optimisation for ChatGPT, Perplexity and Google AI Overviews, and content, and reports serving more than 1,050 brands. It is privately held and a 2022 Inc. 5000 honoree.
Why it’s hereNamed SEO Agency of the Year five times, including Search Engine Land's Global SEO Agency of the Year and Best Large Agency at the 2022 US Search Awards.
Known forSEO · answer-engine optimisation · technical SEO and migrations · link building · content strategy
Named clientsEverlance
Checked against victorious.com, inc.com
- 03
- Raleigh, NC
- Since 2005
Go Fish Digital is a search and digital marketing agency founded in 2005 by Brian Patterson and Dan Hinckley and headquartered at 150 Fayetteville Street in Raleigh, North Carolina. It offers SEO, digital PR, paid media, email, creative, web development and analytics, and names GEICO, Airbnb, Marriott and Chicco among its clients. Since February 2024 it has been part of Agital, a group backed by private-equity firm Trinity Hunt Partners that also owns Exclusive Concepts, EK Creative, Highnoon, Digital Edge and REQ.
Why it’s hereUS Search Awards and Drum Search Awards winner and Inc. 5000 honoree; owned by Agital (Trinity Hunt Partners).
Known forSEO · digital PR · paid search and social · web development · analytics
Named clientsGEICO, Airbnb, Marriott, Chicco USA, Joybird, SimpleTexting, Morimoto
Checked against gofishdigital.com, globenewswire.com
- 04
- New York, NY
- 11–50 people
iPullRank is an enterprise SEO and content-engineering agency founded by Mike King, with about 40 staff spread between New York, Atlanta and remote locations. It sells technical SEO, generative-engine optimisation, what it calls relevance engineering, content strategy and AI search consulting on outcome-based rather than hourly terms, and says most of its Fortune 100 clients are under NDA. It is a Black-owned, privately held firm.
Why it’s hereFounder Mike King was Search Engine Land's Marketer of the Year, and the firm's technical and AI-search research is widely cited in the industry.
Known fortechnical SEO · generative-engine optimisation · relevance engineering · content engineering · AI search strategy
Checked against ipullrank.com, designrush.com
- 05
- Syracuse, NY
- Since 2001
Terakeet is an enterprise search and reputation firm founded in 2001 by Mac Cummings and Patrick Danial and headquartered at 333 W Washington Street in Syracuse, New York. It works for Fortune 1000 brands on organic search, owned-asset optimisation, brand reputation and generative-AI visibility, and has been recognised as a Great Place to Work for close to a decade. It is privately held.
Why it’s hereOne of the longest-running US enterprise SEO firms, founded in 2001 and still independent, serving Fortune 1000 clients.
Known forenterprise SEO · owned-asset optimisation · reputation management · generative-engine optimisation
Checked against terakeet.com, crunchbase.com
- 06
- Simi Valley, CA
- Since 1996
Bruce Clay Inc. is an SEO consultancy founded in January 1996 by Bruce Clay and headquartered in Simi Valley, California, with separately owned affiliate offices in Japan, India, Australia, Singapore and Italy. It provides SEO consulting, training courses, PPC management, content and its own analysis tools, and its founder wrote 'Search Engine Optimization All-in-One For Dummies' and the Search Engine Relationship Chart. The firm is privately held and its technical staff average more than ten years' experience.
Why it’s hereFounded in 1996, one of the first SEO firms in the United States and the source of widely used industry training and reference material.
Known forSEO consulting · SEO training · PPC management · content development · SEO tools
Checked against bruceclay.com, designrush.com
- 07
- Seattle, WA
- Since 1995
Portent is a digital marketing agency founded in Seattle in 1995 that runs SEO, content strategy, paid search, programmatic, social, analytics, conversion optimisation and web development, with a second office in Salt Lake City. Its client work includes Adidas, Lush, Princess Cruises, Kate Spade, Zillow and Tumi, and it is a Google Marketing Platform partner and a 2022 US Agency Awards winner. Portent was acquired by Clearlink in September 2017 and operates as a Clearlink agency.
Why it’s hereThree decades of search work and a 2022 US Agency Awards win; owned by Clearlink since 2017.
Known forSEO · content strategy · PPC and programmatic · analytics · conversion optimisation
Named clientsAdidas, Lush, Princess Cruises, Kate Spade, Zillow, Tumi
Checked against portent.com, crunchbase.com
- 08
- Memphis, TN
- Since 2009
HigherVisibility is a search marketing agency founded in 2009 and headquartered at 6070 Poplar Avenue in Memphis, Tennessee, run by managing partners Adam Heitzman and David McElveen. It offers SEO (including local, e-commerce, franchise and AI-search work), PPC, link building, conversion optimisation, digital PR and web design, and is privately held.
Why it’s hereNamed SEO Agency of the Year by Search Engine Land for 2024 and by the US Agency Awards for 2025.
Known forSEO · local and franchise SEO · GEO/AI SEO · PPC · link building
Checked against highervisibility.com, prweb.com, clutch.co
- 09
- Akron, OH
- Since 2004
- 201–500 people
OuterBox is a performance marketing agency founded in 2004 and headquartered in downtown Akron, Ohio, with offices in Houston and Rochester, Minnesota and more than 300 in-house US staff. It grew out of e-commerce web development and now runs SEO, paid search and social, email, conversion optimisation, analytics and AI tooling, reporting more than 1,000 client engagements. It is a Google Premier Partner and Microsoft Advertising Select Partner and privately held.
Why it’s hereInc. 5000 honoree and US Search Awards winner with one of the largest in-house SEO teams in the Midwest.
Known fore-commerce SEO · B2B SEO · paid media · web design and development · conversion optimisation
Checked against outerboxdesign.com, crainscleveland.com, inc.com
- 10
- Boise, ID
- Since 2010
Page One Power is a link-building and SEO agency founded in Boise, Idaho in 2010 by brothers Jon and Zach Ball, headquartered at 7154 W State Street. It specialises in manual, relationship-based link acquisition for in-house teams, agencies (white label) and enterprises, plus digital PR, technical SEO and content, and publishes case studies for QuickBooks, Healthline, Hyatt and Lucidchart. It is privately held.
Why it’s hereThe best-known US link-building specialist, named Clutch's top link-building company in 2023 with Fortune 500 case studies.
Known forlink building · digital PR · technical SEO · content marketing · SEO consulting
Named clientsQuickBooks, Healthline, Hyatt, Bostitch, WorkWave, uBreakiFix, Lucidchart, Atera
Checked against pageonepower.com, pageonepower.com, yelp.com
- 11
- Lehi, UT
- Since 2008
Big Leap is a digital marketing agency founded in 2008 by Bryan Phelps and headquartered in Lehi, Utah, with in-person, hybrid and remote staff. Its core practice is SEO, including AI, local and technical search, supported by content marketing, digital PR, paid advertising, reputation management and conversion optimisation, and its clients include Nu Skin, Pluralsight, Avis and Extra Space Storage. It is privately held.
Why it’s hereA Utah search firm with a named enterprise client list, profiled by the Daily Herald and a Crunchbase-listed independent company.
Known forSEO · technical and local SEO · content marketing · digital PR · paid advertising
Named clientsNu Skin, Pluralsight, Avis, Extra Space Storage, Workfront, Visionworks, Paul Mitchell Schools, Nomatic
Checked against bigleap.com, heraldextra.com
- 12
- Colorado Springs, CO
- Since 1996
Intero Digital is a digital marketing agency headquartered in Colorado Springs, formed in January 2023 when SocialSEO, founded in 1996, rebranded and folded in the Minds On and Influence & Co. agencies. It runs local, national, technical and e-commerce SEO, generative-engine optimisation, link building, paid media, social, content and Amazon marketing, with around 100 staff in Colorado Springs and offices including Lewis Center, Ohio. It is a Google Premier Partner and Microsoft Advertising Elite partner and reports thousands of clients.
Why it’s hereInc. 5000 honoree and Clutch's top GEO agency for 2026, built on the SocialSEO firm that has sold search since 1996.
Known forlocal, national and e-commerce SEO · generative-engine optimisation · link building · paid media · content marketing
Named clientsBlackbaud, Mizuno, Nomadix, Tuscany Pavers, Updox, Destination Pet
Checked against interodigital.com, gazette.com, clutch.co
- 13
- Los Angeles, CA
- Since 2009
- 201–500 people
Coalition Technologies is an SEO and web design agency founded in 2009 by brothers Joel Gross and Jordan Brannon and headquartered at 515 S Flower Street in Los Angeles, with more than 250 full-time staff. It offers SEO, AI-search optimisation, PPC, Shopify and BigCommerce development, email and conversion optimisation, and publishes more than 860 case studies including Microsoft, Roku, PayPal and Walmart. It is a Google Premier Partner and Shopify Premier Partner and privately held.
Why it’s hereA 250-person independent SEO firm with 160-plus Clutch reviews averaging 4.8 and a 2025 Best of Clutch digital marketing award.
Known forSEO · AI SEO and generative-engine optimisation · e-commerce web design · PPC · conversion optimisation
Named clientsMicrosoft, Roku, PayPal, Walmart, Sony, Ford, Zumba, Spiceology, Native Union
Checked against coalitiontechnologies.com, clutch.co
Checked, not scraped.
Every firm on this page was found through directories, press and client mentions, then verified two ways: its own website had to be live and describe the work, and a second, independent source had to agree it exists and does that work. Founding years, headcounts and client names appear only where the firm or a directory states them; where we couldn’t confirm, the field is blank rather than guessed.
The order is editorial — longevity, named clients, scale and a clear specialism, in roughly that weight — not a score, and nobody on the list paid to be on it. The one exception is marked: the featured card is our own bench and says so.
Lists are re-checked each quarter. Missing a firm that belongs here, or listed and want a correction? Write to lists@primortul.com.
Hiring an SEO company in the US, answered plainly
- How many SEO companies in the US are on this list, and where are they?
- 13. The 13 firms are spread across San Diego, San Francisco, Raleigh, New York, Syracuse, Simi Valley and 7 other cities. Each was verified against its own website and a second source before it was listed.
- How do I choose between SEO companies in the US?
- Start from the job, not the agency: write down what done looks like in one paragraph, then read the "why it's here" line on each entry and shortlist the two or three whose reason matches your job. Ask each for one comparable piece of work and who on their team would actually do yours. 1 of the 13 here are under 50 people, which usually means the people you meet are the people who do the work.
- Did any of these firms pay to be listed?
- No. The order is editorial — longevity, named clients, scale and a clear specialism — and no firm on the ranked list paid for its place. The one paid card is marked "Featured" and is our own bench, Fracs; it is not ranked.
- How long have these SEO companies been around?
- The oldest firm on the list dates from 1995; founding years are shown on each entry where the firm states one, and left blank where it doesn't.
- What should I bring to a first call with an SEO company?
- Your revenue band, what you sell and to whom, the one number you want moved, a budget range, and a start date. Firms price faster and more honestly when the brief is concrete; the match form on this page asks for exactly those five things.
- How is this list kept current?
- It was checked September 2026 and is re-checked each quarter: dead sites come off, mergers and renames are updated, and firms that belong here are added. Corrections go to lists@primortul.com.
Describe the job. Get one SEO company back that fits it.
Two minutes. We read what you wrote, pick one provider from this list or our bench whose work matches it, and they contact you within a business day. Nobody else gets your details.
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