Top SEO Agencies in Los Angeles

Founded in Kyiv in 2015, RegisTeam is a growth marketing agency that works with clients in the United States, Europe and Australia. Its work is built around two disciplines that carry most of its projects: search engine optimization and pay-per-click advertising, with CRM consulting and analytics supporting both. On the SEO side, the team handles technical audits, content and link building, and a newer line of work on visibility in AI search — making sure brands are cited in answers from ChatGPT, Google AI Overviews and similar tools. On the paid side, it plans and manages Google Ads accounts, from launch and tracking setup to ongoing optimization. CRM and automation projects connect marketing data to sales, so lead quality can be measured rather than guessed. According to its Clutch profile, RegisTeam has delivered more than 1,300 projects in over 25 countries and holds a 5.0 rating across 69 client reviews.

Marketer Zilla was founded in 2021 and runs its operations from a head office in San Diego and an office in Mohali, India. It works with clients in the United States, the UK, Australia, the Middle East and India, and lists further offices in London, Sydney, Dubai, Riyadh and Delhi. Search is the backbone of its offer: local, technical, e-commerce and international SEO, plus AI SEO, AEO and GEO aimed at answers from AI assistants. Paid media spans Google, Meta, LinkedIn and YouTube. The agency also produces content, manages social media, builds sites on Shopify, WordPress, React and Next.js, and works on branding, conversion rate optimization and analytics. Its clients include e-commerce and health and wellness businesses. In the US, it works with clients in California, including Los Angeles and San Diego, and in states such as Arizona, Colorado, Georgia and Illinois. Marketer Zilla is a sensible pick for growing companies that want local and AI search visibility managed together with multi-platform ads and site development.

Ethos Ink specializes in organic search for e-commerce brands, covering everything from Google results to answers in ChatGPT. The agency is based in San Diego, California. Its services include e-commerce and technical SEO, AI search optimization, content marketing and product discovery work, such as improving the product feed data that shopping platforms and AI tools rely on. Case studies it lists include Factor, the meal delivery service, where the agency reports a 248% increase in organic traffic, and Photobooth Supply Co. The agency has worked with online retailers as well as health and wellness companies. The agency works with brands across California and in states such as Arizona, Georgia, Illinois, Massachusetts, Minnesota and Pennsylvania. It makes most sense for online retailers and direct-to-consumer brands that already handle their own advertising and want a specialist for organic growth, particularly those with large product ranges that need technical SEO, category content and product data handled for both traditional and AI-driven search.