Where is Antioch, California Located in the United States? - Antioch is a city located in the Contra Costa County in California, United States. Antioch lies between 38.0049 Degrees North latitudes and -121.8058 Degrees West longitudes.
Location Map of Antioch, Contra Costa, California
About Map: The map shows the location of Antioch in Contra Costa County, in the U.S. state of California.
Antioch Map, California, USA
About Antioch Map: This Google Map provides a detailed view with zoom, satellite, and street options to explore the area and its surroundings.
About Antioch, Contra Costa County, California
Antioch is located in Contra Costa County in the U.S. state of California, United States. It lies in the eastern part of the state in the state of the United States along the banks of the San Joaquin River. The city was incorporated in 1872 and was named after the biblical city of Antioch, and it developed as a river port and agricultural trading center before expanding into a suburban residential community within the East Bay region.
Population
According to the United States Census Bureau, the population of Antioch is 115,291 as recorded in the 2020 Census, and the population density is approximately 4,000 people per square mile.
Geography
According to the United States Census Bureau, Antioch covers a total area of approximately 29.1 square miles (about 75.4 square kilometers), including about 28.3 square miles (73.3 square kilometers) of land and 0.8 square miles (2.1 square kilometers) of water.
Location and Surroundings
Antioch is situated east of Concord and northeast of Oakland, positioned near the Sacramento–San Joaquin River Delta region. The city features waterfront areas, residential neighborhoods, and nearby hills that offer scenic views and outdoor recreation. State Route 4 serves as the primary transportation corridor, linking Antioch to other parts of Contra Costa County and the greater Bay Area.
Top Attractions
Antioch provides access to parks, trails, and waterfront recreation along the San Joaquin River. Popular destinations include Contra Loma Regional Park, Black Diamond Mines Regional Preserve, and the Antioch Marina. The city is also home to Los Medanos College, supporting higher education and workforce training in the eastern Contra Costa region.
Transportation
Antioch is primarily served by State Route 4, which connects the city to Interstate 680 and other major highways in the Bay Area. Public transportation includes Bay Area Rapid Transit (BART) service extending to the Antioch station, offering commuter access to Oakland and San Francisco. The nearest major airport is Oakland International Airport, located approximately 40 miles to the southwest.
Explore more cities in California or visit the United States Map section to learn more about the country’s geography.
Sources:
Population and area data sourced from the United States Census Bureau (2020 Census). General city information referenced from the Official Antioch City Website.
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Antioch City Facts
| City | Antioch |
| State | California |
| County | Contra Costa County |
| Country | United States |
| Region | San Francisco Bay Area - East Bay |
| Incorporated | February 6, 1872 |
| Founded | 1850 |
| Total Area | Approximately 30.5 sq mi (79.0 km2) |
| Land Area | Approximately 29.1 sq mi (75.4 km2) |
| Water Area | Approximately 1.4 sq mi (3.6 km2) |
| Elevation | Approximately 43 ft (13 m) |
| Population (2023 estimate) | Approximately 115,000+ |
| Population (2020 Census) | 115,291 |
| Population Density | Approximately 3,900 people per sq mi |
| Time Zone | Pacific Time (UTC-8 / UTC-7 DST) |
| ZIP Codes | 94509, 94531 |
| Area Code | 925 |
| Major Highways | State Route 4 |
| Public Transit | BART - Antioch Station, Tri Delta Transit |
| Major Attractions | Antioch Waterfront, Black Diamond Mines Regional Preserve, Contra Loma Regional Park |
| Official Website | https://www.antiochca.gov/ |
Distance from Antioch City, CA to Nearby Cities in California
- Concord, CA – 18 miles (29 km)
- Walnut Creek, CA – 20 miles (32 km)
- Richmond, CA – 28 miles (45 km)
- Oakland, CA – 35 miles (56 km)
- Berkeley, CA – 33 miles (53 km)
- San Francisco, CA – 43 miles (69 km)
- Vallejo, CA – 32 miles (51 km)
- Fairfield, CA – 30 miles (48 km)
- Livermore, CA – 26 miles (42 km)
- Pleasanton, CA – 30 miles (48 km)
- Hayward, CA – 37 miles (60 km)
- Fremont, CA – 44 miles (71 km)
- Napa, CA – 41 miles (66 km)
- Santa Rosa, CA – 63 miles (101 km)
- Sacramento, CA – 63 miles (101 km)
- Stockton, CA – 46 miles (74 km)
- Modesto, CA – 74 miles (119 km)
- Daly City, CA – 48 miles (77 km)
- San Mateo, CA – 54 miles (87 km)
- San Jose, CA – 60 miles (97 km)
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