The 10 best SEO agencies in the US (2026)

The best SEO agencies in the US in 2026 include Victorious, WebFX, Ignite Visibility and Searchbloom. We reviewed each agency's own website and its public Clutch listing, then ranked ten on service depth, published evidence, AI-search (GEO and AEO) capability and transparency. Last checked 17 October 2026.

Comparison table

How we ranked them

We reviewed each agency's own website and its public Clutch listing on 17 October 2026. We scored five things:

1. Service depth: dedicated SEO services (technical, content, local, links).
2. Published evidence: named clients and results the agency publishes, which we attribute and never restate as fact.
3. AI search: whether it offers GEO, AEO or AI-visibility work.
4. Independent signals: Clutch rating, review count, awards and certifications as shown on the listing.
5. Transparency: clear scope, pricing signals and reachable contacts.

Ratings change often, and review counts differ between Clutch category pages. Treat this list as a starting shortlist, then verify current figures yourself. Spotted an error or want your agency reviewed? Tell us and we will correct it.

The agencies

1. Victorious

An SEO specialist operating since 2013 for SaaS, finance, ecommerce, healthcare and higher-education brands. Named clients on its site include SoFi, Salesforce, Wayfair and Delta Dental, with results such as UNIONBAY organic revenue up 200% year on year and Agora goal completions up 847%.

• Based: San Francisco, California, USA
• Services: SEO, answer engine optimisation (AEO/GEO), content services, managed WordPress hosting
• AI search (GEO/AEO): AEO/GEO for ChatGPT, Perplexity, Google AI Overviews, Gemini, Copilot and Claude
• Clutch: Not shown on the Clutch page we reviewed

Evidence:

• Since 2013; clients include SoFi, Salesforce and Wayfair (per its site)
• Awards are self-reported on its site, including Enterprise SEO Agency of the Year (Clutch)

Worth knowing: Priced for enterprise and growth-stage budgets; request current terms. Visit Victorious →

2. WebFX

One of the largest US agencies by review volume. Its site claims over $10 billion in client revenue generated in five years and a #1 rating on Clutch and G2 across 700+ third-party reviews.

• Based: Harrisburg, Pennsylvania, USA (per Clutch)
• Services: Digital marketing including SEO, with AI visibility tracking
• AI search (GEO/AEO): AI visibility tracking mentioned
• Clutch: 4.9 from 454 reviews, the most of any firm on the page we reviewed · minimum project $1,000+ · 250–999 employees

Evidence:

• Self-reported: $10B+ client revenue over five years; 30 years of results

Worth knowing: Strong on proprietary technology and reporting; scale suits mid-market and above. Visit WebFX →

3. Ignite Visibility

A 13-year-old agency with 340+ staff, according to its site, serving multi-location businesses, franchises, ecommerce and B2B brands. Logos include Batteries Plus, Driven Brands, Dun & Bradstreet, Experian and Jazzercise.

• Based: San Diego, California, USA (per Clutch)
• Services: SEO, GEO, local SEO, digital PR, influencer, PPC, paid social, programmatic, CRO, web development, email and SMS
• AI search (GEO/AEO): GEO listed
• Clutch: 4.8 from 175 reviews · minimum project $1,000+ · 250–999 employees

Evidence:

• 340+ staff; 13 years in business (per its site)
• Google, Meta and TikTok Premium Partner status claimed on its site

Worth knowing: Large and multi-service, so confirm the day-to-day SEO team. Visit Ignite Visibility →

4. Searchbloom

A specialist agency founded in 2014 serving small businesses, marketing teams and national brands. Client logos include Nordstrom, U.S. Bank and SUSE, and it reports a retention rate above 95% (self-reported). It was a Search Engine Land Awards winner in 2021 and a finalist in 2024 and 2025.

• Based: South Jordan, Utah, USA
• Services: SEO (local, national, ecommerce), PPC, website development, CRO
• AI search (GEO/AEO): "AI-Ready Strategy" mentioned; not a named service
• Clutch: 4.9 from 102 reviews · minimum project $1,000+ · 10–49 employees

Evidence:

• Founded 2014; Search Engine Land Awards winner 2021 and finalist 2024 and 2025 (per its site)

Worth knowing: A mid-sized team; ask which strategist will lead your account. Visit Searchbloom →

5. SmartSites

A high-volume agency widely cited in US rankings for SEO and paid search. Its own website blocked our automated review, so these details come from Clutch and published rankings; verify current services on its site.

• Based: Paramus, New Jersey, USA (per Clutch)
• Services: SEO and PPC-led digital marketing
• AI search (GEO/AEO): Not verified
• Clutch: 4.9 from 369 reviews · minimum project $1,000+ · 250–999 employees

Evidence:

• Clutch is the main public evidence we could verify

Worth knowing: We could not verify details on its own website. Visit SmartSites →

6. Funnel Boost Media

An agency operating since 2012 for local and national businesses in home services, legal, healthcare, financial services and automotive. It lists AI Search Optimization aimed at citations in Google AI Overviews, ChatGPT and Perplexity, and badges including Forbes Advisor Best of 2024 for SEO services.

• Based: San Antonio, Texas, USA
• Services: SEO (local, national, ecommerce, lead gen), PPC, social, web design and development, hosting, branding
• AI search (GEO/AEO): "AI Search Optimization" and "Generative AI Optimization" listed
• Clutch: 4.9 from 119 reviews · minimum project $1,000+ · 50–249 employees

Evidence:

• Since 2012; Google Partner; G2 High Performer Winter 2025 (per its site)

Worth knowing: Case-study metrics are not shown on its homepage. Visit Funnel Boost Media →

7. Silverback Strategies

A performance marketing agency for B2C brands it describes as $100M+, with testimonials from K12, Cornell, Apple Federal Credit Union and LexisNexis. Its measurement services include media mix modelling and incrementality testing.

• Based: Virginia, USA
• Services: Paid media, organic search (SEO, AI search, content), measurement (media mix modelling, incrementality), CRO
• AI search (GEO/AEO): AI Search and "SEO + AEO" listed
• Clutch: 4.9 from 27 reviews · minimum project $10,000+ · 50–249 employees

Evidence:

• Offers media mix modelling and incrementality testing alongside SEO

Worth knowing: Aimed at larger budgets; a higher minimum project size. Visit Silverback Strategies →

8. Rankings.io

A legal-marketing specialist, mainly for personal-injury firms. Its site reports a 593% organic traffic increase for a New York personal-injury firm and a 992% increase in ChatGPT visibility for another, and states it has made Inc. 5000 nine years in a row.

• Based: Marion, Illinois, USA (per Clutch)
• Services: SEO for law firms, Google search ads, paid social, AI search, Local Services Ads, web design, social and video
• AI search (GEO/AEO): AI search optimisation ("AIO") listed
• Clutch: 4.9 on Clutch · minimum project $5,000+ · 50–249 employees (review counts vary by Clutch page)

Evidence:

• Inc. 5000 nine consecutive years (per its site)
• Results are client-specific and self-reported

Worth knowing: Best suited to law firms; less relevant for other sectors. Visit Rankings.io →

9. Moburst

A mobile-app marketing specialist whose site names clients including Samsung, Google, Uber, Reddit and Microsoft. Page-reported results include Reddit (+90% organic growth in under a year) and Calm (+36% organic installs).

• Based: New York, USA (per Clutch), with offices in San Francisco, Florida, Denver, Israel, London and Bulgaria
• Services: App marketing, organic (SEO, AEO/AI SEO, ASO, CRO, PR), media buying, creative
• AI search (GEO/AEO): AEO/AI SEO listed
• Clutch: 4.9 from 44 reviews · minimum project $5,000+ · 50–249 employees

Evidence:

• Page-reported results: Reddit +90% organic growth; Calm +36% organic installs

Worth knowing: Strongest for app growth; less relevant for local services. Visit Moburst →

10. A‑Vintage Digital (our own agency)

Disclosure: this is our own agency. We placed it using the same criteria as the others, and we tell you plainly what is and is not proven.

A‑Vintage Digital is a Nigeria-based, fully remote agency. It is not located in the US, and we list it here as an option for the US businesses comfortable working with a remote specialist team, not as a local agency. Its strongest fit is publishers, hospitality and multilingual businesses, or companies that want SEO, GEO and AEO and the website or app build from one team.

• Services: SEO, GEO and AEO; web design and development; Android and iOS app development; multilingual SEO; digital marketing; product building
• AI search: GEO and AEO are core services
• Founder: Akindayo Rufus Akintayo, SEO Specialist and Manager
• Third-party reviews: No third-party reviews yet. We list ourselves transparently and apply the same evidence standard as every other agency.

Published evidence:

• Kharis Publishing: +500% organic traffic growth and #1 rankings for core publishing keywords
• The Legacy Villa: page-one rankings for direct-booking keywords
• Venostis: one Italian site indexed and ranking in three languages
• Seven of our own products built, optimised and marketed in-house

Request a free audit SEO, GEO and AEO services → SEO in Nigeria →

How to choose a SEO agency in the US

1. Ask for sector case studies: Results from your industry and market matter more than headline percentages.
2. Check AI-search capability: Ask how they work on Google AI Overviews, ChatGPT and Perplexity visibility: see our GEO guide and AEO guide.
3. Understand who does the work: Ask for the named strategist, reporting cadence and what happens if rankings stall.
4. Confirm technical depth: Request a sample audit covering crawl, indexing, Core Web Vitals and structured data.
5. Review contract terms: Look for a clear scope, a sensible minimum term and no ownership lock-in of your content or accounts.

Frequently asked questions

What is the best SEO agency in the US?

On our public-evidence review, Victorious ranks first, followed by WebFX and Ignite Visibility. The best agency for you depends on your sector, budget and goals, so shortlist two or three and ask for sector references.

How much does a SEO agency in the US cost?

Clutch listings for the agencies here show minimum project sizes from about $1,000 up to $25,000 or more, with $1,000 and $5,000 the most common. Monthly retainers vary by scope, so request a written proposal.

Do these agencies work on AI search (GEO and AEO)?

Many now list AI search, GEO or AEO services, but depth varies. The comparison above notes what each agency states publicly, and you should ask for examples.

Can I trust a list published by an agency that appears on it?

You should read it critically. We disclose our own entry, attribute every claim to its source, and ask readers to verify details. If you spot an error, tell us and we will fix it.

Does A‑Vintage Digital work with the US businesses?

Yes, remotely. A‑Vintage Digital is Nigeria-based, and has delivered work for a US publisher (Kharis Publishing) and a multilingual Italian business (Venostis). Request a free audit to discuss your project.

More agency lists

• SEO agencies in Nigeria
• SEO agencies in UK
• SEO agencies in Canada
• Digital marketing agencies in US

Sources

Each agency's own website, plus Clutch directory pages for SEO and digital marketing companies, reviewed on 17 October 2026. Awards and results are reported as the agency presents them.