U.S. PLACE PROFILE
Martinez, CA
Martinez is a City in Contra Costa County, California. The loaded 2025 population estimate is 36,849.
Published locationCalifornia
Population estimate36,8492025 loaded Census estimate
CountyContra Costa CountyPrimary loaded county
Place typeCityCensus place classification
Coordinates37.99812, -122.11442Census representative point
EXPLORE FROM MARTINEZ
Distance and nearby-place tools
Only tools with enough qualifying stored data are linked below.
Closest published places
Nearest qualifying Census places by straight-line distance.
Pleasant Hill, CA3.7 miles · SE→
Benicia, CA5.6 miles · NW
Concord, CA6.4 miles · E→Lafayette, CA7.4 miles · S
Walnut Creek, CA7.7 miles · SE→Orinda, CA8.6 miles · S
County coverage
Some incorporated places cross county lines. These county-part values come from the loaded Census county-place-part population layer.
| County | 2025 population in this place part |
|---|---|
| Contra Costa County | 36,849 |
DATA COVERAGE
What is available for Martinez
Geographic identityNearby placesPopulation estimate100-mile radius25-mile radius50-mile radius
PRIMARY GEOGRAPHIC SOURCE
U.S. Census Bureau
Place identity, coordinates and geographic identifiers are tied to the loaded Census source record for this location.