Antioch is a city in Contra Costa County, California, home to about 116,477 people across 29 square miles. Its ZIP codes are 94509 and 94531, and parts of 94513 are in Antioch too.
Homes sold for a median of $328 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Antioch
Mostly Antioch
Mostly Brentwood; part is in Antioch
Each card is that ZIP code’s whole market, including any part outside Antioch. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Antioch’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Oakland San Francisco Bay Airport (OAK)30 miles away |
|---|---|
| Closer regional airport | Buchanan Field (CCR)14 miles away |
| Nearest city of 250,000+ | Stockton, CA26 miles away |
| Nearest city of 1 million+ | Los Angeles, CA332 miles away |
Straight-line distances from the center of Antioch; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Antioch had 115,291 residents in the 2020 census, up 27% since 2000.
It’s the 54th largest of 1,563 towns in California by population.
Contra Costa County grew from 18,046 residents in 1900 to 1,165,927 in 2020.
Contra Costa County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 91°F in summer, and winter lows average 40°F. About 12.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Antioch Pumping Plt #3, CA weather station (2 miles away).
343,690 jobs at 25,932 businesses in Contra Costa County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1,065 doctors and other health care providers list an office in Antioch’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 130 |
|---|---|
| Specialist doctors | 157 |
| Dentists | 90 |
| Nurse practitioners and physician assistants | 98 |
| Mental health providers | 477 |
| Physical and occupational therapists | 61 |
| Optometrists | 26 |
| Chiropractors | 26 |
| Pharmacies | 17 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (41 nearby)
Grocery stores (10 nearby)
Pharmacies (3 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Antioch Charter Academy District, Antioch Charter Academy II District, Antioch Unified and others. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Antioch Charter AcademyAntioch | K–8 | 202 | Charter | 2.0 mi |
| Antioch Charter Academy IIAntioch | K–8 | 204 | Charter | 2.6 mi |
| Belshaw ElementaryAntioch | K–5 | 431 | Public | 1.2 mi |
| Carmen Dragon ElementaryAntioch | K–6 | 495 | Public | 2.3 mi |
| CCCOE Special Education ProgramsAntioch | K–12 | 116 | Special Education | 3.6 mi |
| Diablo Vista ElementaryAntioch | K–5 | 496 | Public | 1.9 mi |
| Fremont ElementaryAntioch | K–5 | 482 | Public | 2.2 mi |
| Grant ElementaryAntioch | K–6 | 478 | Public | 1.3 mi |
| Jack London ElementaryAntioch | K–6 | 446 | Public | 1.0 mi |
| Kimball ElementaryAntioch | K–5 | 450 | Public | 2.0 mi |
| Lone Tree ElementaryAntioch | K–5 | 518 | Public | 1.2 mi |
| Marsh ElementaryAntioch | K–5 | 522 | Public | 1.9 mi |
| Mission ElementaryAntioch | K–5 | 512 | Public | 2.5 mi |
| Muir (John) ElementaryAntioch | K–5 | 660 | Public | 0.3 mi |
| Prospects High (Alternative)Antioch | K–12 | 304 | Alternative Education | 2.9 mi |
| Rocketship Delta PrepAntioch | K–5 | 540 | Charter | 1.8 mi |
| Sutter ElementaryAntioch | K–5 | 450 | Public | 1.2 mi |
| Thomas Gaines Virtual AcademyAntioch | K–8 | 261 | Alternative Education | 1.5 mi |
| Turner ElementaryAntioch | K–5 | 436 | Public | 3.6 mi |
| Antioch MiddleAntioch | 6–8 | 665 | Public | 2.1 mi |
| Dallas Ranch MiddleAntioch | 6–8 | 795 | Public | 0.9 mi |
| Park MiddleAntioch | 6–8 | 1,055 | Public | 1.5 mi |
| Black Diamond MiddleAntioch | 7–8 | 358 | Public | 1.5 mi |
| Antioch HighAntioch | 9–12 | 1,776 | Public | 2.2 mi |
| Deer Valley HighAntioch | 9–12 | 1,812 | Public | 1.5 mi |
| Dozier-Libbey Medical HighAntioch | 9–12 | 681 | Alternative Education | 2.5 mi |
| Bidwell Continuation HighAntioch | 10–12 | 147 | Alternative Education | 1.4 mi |
| Live Oak High (Continuation)Antioch | 10–12 | 130 | Alternative Education | 2.1 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Cornerstone Christian SchoolAntioch | Pre-K–12 | 559 | Assembly of God | 1.9 mi |
| Holy Rosary Elementary SchoolAntioch | Pre-K–8 | 313 | Roman Catholic | 2.0 mi |
| Kindercare Learning Center #1039Antioch | Pre-K–5 | 67 | Nonsectarian | 2.7 mi |
| Heritage Baptist AcademyAntioch | K–12 | 80 | Baptist | 2.7 mi |
| Hilltop Christian SchoolAntioch | K–8 | 137 | Christian (no specific denomination) | 0.9 mi |
| Spectrum Center AntiochAntioch | K–12 | 38 | Nonsectarian | 1.4 mi |
| Spectrum Center- Antioch CampusAntioch | 1–12 | 57 | Nonsectarian | 1.4 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Brentwood and Knightsen.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.