How much does it cost to hire an SEO agency?
US SEO agencies typically charge $2,500–$10,000+ per month for retainers, or $5,000–$50,000+ for one-off audits and large technical migrations. Enterprise programs run $15,000–$50,000+/mo. Retainers under $2,500/mo almost always mean templated deliverables from junior staff — occasionally worth it for very small local sites, rarely worth it otherwise. The best value tier is $5–10K/mo where you get senior strategy plus real execution capacity.
Why this matters
This question shows up regularly in Google's People Also Ask for the "seo agency" query, which is a signal that buyers in this space are asking it constantly during their research phase. The answer above is written from The Wall's editorial position — we index 2,286 verified US growth-services vendors across 10 pillars and see how these questions map to actual buying decisions.
If you're evaluating vendors in this category, the SEO pillar page has the full US firm list with rates, team sizes, and headquarters filters.