Last updated: September 24, 2026
Local housing snapshot: Antioch, CA
- Population: about 116,000
- Median year homes were built: 1985
- Homes built before 1980: 42%
- Owner-occupied homes: 63%
Older homes can mean different materials, wiring, venting or permit needs. Mention your home's age when you contact a provider.
Source: U.S. Census Bureau, American Community Survey 2019–2023 5-year estimates.
Frequently asked in Antioch
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Also serving nearby: Concord · Fairfield · Tracy · Stockton · Vallejo
Service area details
Serving all of Antioch — population 117,096; about 4,014 residents per square mile across 29.2 sq mi. ZIP codes covered include 94509, 94531.
Neighborhoods served in Antioch: Rivertown, Sycamore Square, Deer Valley, Lone Tree, Prewett Creek — and every surrounding area.
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