Here we profile some of the best SEO companies in the US based on reviews, clear industry expertise, longevity, demonstrated results and more.
iPullRank
Founded: 2014
Location: New York, NY
Speciality: Content engineering and advanced SEO for B2B
Notable Clients: LG, DocSend
Overview: iPullRank blends content strategy with deep technical SEO to help mid-market and enterprise brands stand out in crowded industries.
Website: https://ipullrank.com
First Page Sage
Founded: 2009
Location: San Francisco, CA
Speciality: Thought leadership-driven SEO for B2B lead generation
Notable Clients: Salesforce, Logitech, US Bank
Overview: First Page Sage creates consistent, high-quality SEO content that builds authority over time. Their focus is on generating measurable ROI through long-term content strategies.
Website: https://firstpagesage.com
Duffy Agency
Founded: 2009
Location: Boston, MA
Speciality: International and multilingual SEO for B2B expansion
Notable Clients: UN World Food Programme, Cavidi
Overview: Duffy Agency helps B2B companies expand into international markets with localisation strategies and SEO tailored for multilingual audiences.
Website: https://duffy.agency
Marketing Eye
Founded: 2004
Location: Atlanta, GA
Speciality: SEO combined with creative web design for conversion optimisation
Notable Clients: Safeway, Cirrus Networks
Overview: Marketing Eye blends SEO with conversion-focused design, providing end-to-end marketing for small and mid-sized B2B companies.
Website: www.marketingeye.com
Clay Agency
Founded: 2016
Location: San Francisco, CA
Speciality: UX-first SEO and conversion rate optimisation
Notable Clients: Slack, UPS, Coinbase
Overview: Clay is known for combining SEO strategy with elegant UX design that converts visitors into customers, especially for tech-forward B2B clients.
Website: https://clay.global
Epsilon
Founded: 1969
Location: Irving, TX
Speciality: Enterprise SEO and omnichannel marketing
Notable Clients: Coach, Walgreens, Volvo
Overview: Epsilon integrates SEO into a broader customer experience and data-driven marketing strategy, often working with enterprise-scale B2B companies.
Website: www.epsilon.com
Community Boost
Founded: 2012
Location: San Diego, CA
Speciality: SEO for nonprofit organisations and mission-driven B2B
Notable Clients: The Humane Society, The Trevor Project
Overview: Community Boost provides digital growth solutions specifically for nonprofit and cause-based organisations with a strong emphasis on SEO.
Website: www.communityboost.org
AMP Agency
Founded: 1995
Location: Boston, MA
Speciality: Video SEO and branded content optimisation
Notable Clients: Microsoft, Vizio, Hasbro
Overview: AMP leverages storytelling and video content strategies, combined with technical SEO, to elevate brands in search rankings.
Website: www.ampagency.com
Metric Theory
Founded: 2012
Location: San Francisco, CA
Speciality: SEO and paid search integration for data-driven B2B growth
Notable Clients: LexisNexis, GoFundMe
Overview: Metric Theory uses deep analytics and A/B testing to deliver full-funnel SEO performance, from lead generation to conversion.
Website: www.metrictheory.com
Omniscient Digital
Founded: 2019
Location: Austin, TX
Speciality: SEO-led content marketing for SaaS and B2B
Notable Clients: Adobe, Asana, Loom
Overview: Omniscient focuses on creating strategic content for scaling organic traffic and increasing authority in competitive SaaS niches.
Website: https://beomniscient.com
Mike Khorev
Speciality: SEO and digital marketing consulting for B2B
Overview: Mike is a seasoned consultant who helps B2B firms improve their SEO, lead generation, and sales pipeline through a tailored strategy.
Website: https://mikekhorev.com
RevenueZen
Founded: 2017
Location: Portland, OR
Speciality: SEO-led growth for SaaS and service-based B2B firms
Notable Clients: Bloomfire, Lightyear
Overview: RevenueZen helps B2B clients generate sales-ready traffic with scalable content, link building, and keyword strategies.
Website: https://revenuezen.com
Accelerate Agency
Speciality: Technical and content SEO for SaaS and enterprise B2B
Overview: Accelerate Agency uses machine learning and data insights to build highly technical, performance-driven SEO strategies.
Website: https://accelerateagency.ai
Skale
Speciality: SEO revenue engines for B2B SaaS
Notable Clients: G2, HubSpot
Overview: Skale turns SEO into a measurable revenue engine by focusing on SQLs, product-qualified leads, and user acquisition metrics.
Website: https://skale.so
Go Fish Digital
Founded: 2005
Location: Raleigh, NC
Speciality: Comprehensive SEO, PR, and digital branding
Overview: Go Fish Digital is a full-service digital agency known for technical SEO, reputation management, and scalable content strategies.
Website: https://gofishdigital.com
Victorious SEO
Founded: 2013
Location: San Francisco, CA
Speciality: Technical SEO and link building
Notable Clients: GE Digital, Wayfair, GoFundMe
Overview: Victorious offers transparency-focused SEO services, specialising in audits, on-page optimisation, and scalable link outreach.
Website: https://victoriousseo.com
Seer Interactive
Founded: 2002
Location: Philadelphia, PA
Speciality: Data-first SEO and digital strategy
Overview: Seer Interactive merges big data with SEO strategies to help B2B brands understand audience behaviour and capitalise on growth opportunities.
Website: https://www.seerinteractive.com
Single Grain
Founded: 2005
Location: Los Angeles, CA
Speciality: SEO for SaaS, B2B, and blockchain companies
Overview: Led by Eric Siu, Single Grain offers aggressive SEO and marketing campaigns to help scale startups and SaaS brands rapidly.
Website: https://www.singlegrain.com
