Where America's pool-service businesses are: the top states

There are roughly 18,069 pool-service establishments in the U.S. (NAICS 561790, 2023 Census County Business Patterns). Unusually, Florida leads — not California — with 3,260, followed by California 2,198 and Texas 1,621. The tell is fourth place: Arizona at 879 punches well above its population — a clear sunbelt, year-round-pool effect. New York follows with 871, then New Jersey 577, North Carolina 575, and Pennsylvania 485.

Why it matters for insurance: pool service is a general-liability trade with real property-damage and chemical-handling exposure. See how GL profitability varies by state in our General Liability Loss Ratios by State study.

Paid employees = total employment reported for the week of March 12, U.S. Census Bureau, 2023 County Business Patterns. "—" marks state cells the Census suppressed for disclosure.

Counts are establishments classified under NAICS 561790 (Other Services to Buildings and Dwellings, the pool-service pillar) in the U.S. Census Bureau's 2023 County Business Patterns, the most recent CBP release. An establishment is a single physical location, so a business operating in several states is counted once per location; figures count establishments, not employees or revenue. State rows exclude cells the Census suppressed for disclosure.

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• General Liability loss ratios & profitability by state (NAIC)
• Deep data study: General Liability by state