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MarketingSEOUSA

Best SEO Agencies in USA

Search Engine Optimization helps businesses rank higher in Google, Bing, and other search engines. A good SEO agency improves your organic visibility, drives qualified traffic, and ultimately increases revenue — without paying for every click. In USA, you'll find agencies ranging from boutique specialists to large full-service firms. Vendar helps you compare them objectively.

114 vendorsUSASEO

SEO Vendors in USA

Straight North logo
1
Top 1Verified

Straight North

Chicago, IL, USAagencyTeam 10-49

Chicago performance agency combining paid media, conversion-focused websites, and lead-generation systems for predictable growth.

Straight North has clear official-site proof for performance marketing work relevant to Chicago buyers.
Chicago lead-gen teams that want paid campaigns connected tightly to websites, conversion points, and pipeline quality.
B2B Demand GenCustomer AcquisitionSEOAgencies with Proven ResultsAttribution / Analytics6 case studies3 named clients
Verified Jun 2026
97/100
ExcellentTop 5%
Cases
6
Proof
Strong proof
From $5K/mo
View profileCompare
Sitrick And Company logo
2
Top 2Official Sources

Sitrick And Company

Los Angeles, CA, USAagencyTeam 50-199

Los Angeles crisis and reputation-management firm for high-profile individuals, corporate disputes, restructurings, and make-or-break public situations.

One of the strongest reputation and crisis operators in Los Angeles for high-severity situations.
High-stakes crisis response when company, board, or executive reputation is under pressure.
Crisis responseExecutive reputationSEOBrand MentionsCommunity Marketing+62 case studies5 named clients
Verified Jul 2026
97/100
ExcellentTop 5%
Cases
2
Proof
Strong proof
From $10K/mo
View profileCompare
Red Banyan logo
3
Top 3Verified

Red Banyan

Los Angeles, CA, USAagencyTeam 10-49

Los Angeles crisis PR and reputation-management firm for urgent response, executive issues, and high-visibility narrative control.

Strong crisis and executive-reputation fit for Los Angeles buyers.
Urgent crisis response when public narrative and search visibility are both at risk.
Crisis responseExecutive reputationSEOORMSEO for High-Ticket Services2 case studies1 named client
Verified Apr 2026
97/100
ExcellentTop 5%
Cases
2
Proof
Strong proof
From $8K/mo
View profileCompare
Amsive logo
4
Official Sources

Amsive

New York, NY, USAagencyTeam 10-49

Data-led performance marketing agency with enterprise SEO capabilities for larger growth organizations.

Official site positions Amsive as a data-led performance marketing agency with SEO in its capability mix.
Enterprise SEO where data, reporting, and internal stakeholder alignment matter
EnterpriseTechnical SEOSEOAgencies with Proven ResultsAttribution / Analytics8 case studies6 named clients
Verified Apr 2026
95/100
ExcellentTop 5%
Cases
8
Proof
Strong proof
From $8K/mo
View profileCompare
Marcel Digital logo
5
VerifiedOfficial Sources

Marcel Digital

Chicago, IL, USAagencyTeam 10-49

Chicago digital agency blending paid media, CRO, analytics, and conversion-focused web performance for B2B and lead-gen growth teams.

Marcel Digital has clear official-site proof for performance marketing work relevant to Chicago buyers.
Chicago B2B and lead-gen programs where paid media, CRO, and analytics need to move together.
B2B Demand GenConversion Rate OptimizationSEOAgencies with Proven ResultsAttribution / Analytics4 case studies
Verified Jun 2026
95/100
ExcellentTop 5%
Cases
4
Proof
Strong proof
From $6K/mo
View profileCompare
OuterBox logo
6
VerifiedOfficial Sources

OuterBox

Akron, USAagencyTeam 51-200

Ecommerce SEO and web design agency driving online revenue since 2004

Strong fit for ecommerce and retail brands that want SEO connected closely to online-store performance.
Ecommerce SEO and revenue growth
Ecommerce SEOShopify Plus migrationsSEOPPCWeb Development30 case studies14 named clients
Verified Apr 2026
95/100
ExcellentTop 5%
Cases
30
Proof
Strong proof
From $1K/mo
View profileCompare
S
7
VerifiedOfficial Sources

SmartSites

Paramus, USAagencyTeam 51-200

America's top-rated digital marketing agency — design, SEO, PPC under one roof

Good option for SMB and lower-mid-market buyers who want broad digital coverage at a more accessible threshold.
SMB growth with SEO and PPC together
Full-service digital for SMBsHealthcare marketingSEOPPCSocial Media Marketing40 case studies9 named clients
Verified Apr 2026
95/100
ExcellentTop 5%
Cases
40
Proof
Strong proof
From $1K/mo
View profileCompare
Thrive Internet Marketing Agency logo
8
VerifiedOfficial Sources

Thrive Internet Marketing Agency

Dallas, USAagencyTeam 51-200

Results-driven digital marketing agency helping businesses grow online

Good fit for buyers who want broad digital coverage under one agency relationship with flexible month-to-month terms.
SEO and PPC growth under one team
Local SEOSmall business growthSEOPPCSocial Media Marketing35 case studies6 named clients
Verified Apr 2026
95/100
ExcellentTop 5%
Cases
35
Proof
Strong proof
From $1K/mo
View profileCompare
W
9
VerifiedOfficial Sources

WebFX

Harrisburg, USAagencyTeam 201-1000

Technology-enabled digital marketing agency driving revenue for clients worldwide

Strong fit for buyers who want a mature full-service digital agency with substantial proof volume.
SEO-led revenue growth with broader marketing support
Full-service digital marketingRevenue-driven SEOSEOContent MarketingPPC+1100 case studies7 named clients
Verified Apr 2026
95/100
ExcellentTop 5%
Cases
100
Proof
Strong proof
From $1K/mo
View profileCompare
Avenue Z logo
10
Verified

Avenue Z

New York, NY, USAagencyTeam 10-49

New York media and visibility agency for brands that care about discoverability, authority, and reputation in search.

Official site positions Avenue Z around optimization and media-driven discoverability.
Search visibility for brands where authority, reputation, and discoverability all matter
Content-ledHigh-TicketSEOAI Search VisibilityAnswer Engine Optimization16 case studies12 named clients
Verified Apr 2026
94/100
ExcellentTop 5%
Cases
16
Proof
Strong proof
From $7K/mo
View profileCompare
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Need Help Choosing?

Let AI match you with the best SEO vendor in USA based on your budget, goals, and timeline.

What is SEO?

Search Engine Optimization helps businesses rank higher in Google, Bing, and other search engines. A good SEO agency improves your organic visibility, drives qualified traffic, and ultimately increases revenue — without paying for every click. In USA, you'll find agencies ranging from boutique specialists to large full-service firms. Vendar helps you compare them objectively.

Top Cities in USA

New YorkLos AngelesChicagoHoustonPhoenix

SEO in Other Locations

SEO in Los AngelesSEO in ChicagoSEO in HoustonSEO in PhoenixSEO in BirminghamSEO in ManchesterSEO in GlasgowSEO in LeedsSEO in HamburgSEO in MunichSEO in CologneSEO in Frankfurt

Other Services in USA

Link BuildingORMReddit MarketingSERM

Frequently Asked Questions

How many SEO agencies are in USA?

Vendar tracks multiple SEO vendors operating in USA. The exact count updates as new agencies are verified and added to our database.

What does SEO cost in USA?

Rates depend on vendor expertise, project scope, and local market conditions. Use the vendor cards above to compare pricing models and minimum budgets across agencies.

How to choose a SEO vendor in USA?

Look for proven case studies, transparent pricing, relevant industry experience, and a clear methodology. Vendar's decision scores help you compare objectively.