Contra Costa County, California Cities (2025)

52 cities

City
Rank
2025 Pop.
2020 Pop.
Change
Density
Area (mi²)
Type
Concord1120,334125,286-0.82%3,93730.57 City
Antioch2118,240115,3790.49%4,05329.17 City
Richmond3112,712116,196-0.61%3,75230.04 City
San Ramon483,96386,377-0.57%4,18620.06 City
Pittsburg575,43576,354-0.24%4,26817.68 City
Walnut Creek668,45670,196-0.51%3,46419.76 City
Brentwood765,57464,4530.34%4,41114.87 City
Oakley847,28143,4801.63%2,98015.87 City
Danville942,62543,560-0.44%2,35818.08 Town
Martinez1035,86137,195-0.74%2,83612.64 City
Pleasant Hill1133,26734,604-0.8%4,7027.08 City
San Pablo1230,68932,089-0.9%11,6962.62 City
Hercules1326,89226,1170.58%4,1936.41 City
El Cerrito1425,29225,941-0.51%6,8883.67 City
Bay Point1525,17125,3781.02%3,9176.43 CDP
Lafayette1624,81825,392-0.46%1,65215.02 City
Orinda1719,26419,514-0.26%1,49912.85 City
Pinole1818,13119,005-0.96%3,5525.10 City
Moraga1916,32516,880-0.68%1,7269.46 Town
El Sobrante2016,20414,7791.48%5,2343.10 CDP
Discovery Bay2115,86415,9041.06%2,8375.59 CDP
Alamo2214,30113,864-0.13%1,4579.82 CDP
El Sobrante2311,97813,096-0.42%1,6567.23 CDP
Blackhawk2410,93910,5900.98%1,8945.78 CDP
Clayton2510,55111,058-0.95%2,7483.84 City
Rodeo269,49810,0230.58%2,5353.75 CDP
Contra Costa Centre278,6056,6677.15%13,5090.64 CDP
Camino Tassajara287,2485,8704.86%5,6801.28 CDP
Saranap296,3696,0271.22%5,6111.14 CDP
El Cerrito305,3855,2690.35%2,0702.60 CDP
Pacheco315,3804,7752.15%7,1640.75 CDP
Tara Hills325,2214,9150.11%7,8280.67 CDP
North Richmond333,7384,2580.03%2,6891.39 CDP
Crockett343,6943,2051.09%3,4781.06 CDP
Rollingwood353,6123,6121.21%20,8790.17 CDP
East Richmond Heights363,2863,4730%5,6660.58 CDP
Reliez Valley373,2123,3210.22%1,3612.36 CDP
Vine Hill383,0813,228-1.44%2,0511.50 CDP
Bayview392,7232,7542.44%8,9280.30 CDP
Byron402,0782,0572.62%3196.52 CDP
Montalvin Manor412,0252,490-2.74%6,3080.32 CDP
Bethel Island421,9572,015-0.61%3735.25 CDP
Knightsen431,6661,1000.42%1998.36 CDP
Shell Ridge441,0611,0810.57%2,4670.43 CDP
North Gate459557401.92%1,2990.73 CDP
Norris Canyon46953790-0.1%2643.61 CDP
Castle Hill479381,164-2.5%1,6030.58 CDP
Acalanes Ridge48917875-1.61%1,9890.46 CDP
Alhambra Valley499151,051-0.11%5671.61 CDP
Clyde507327370.55%5,1910.14 CDP
Diablo51676834-4.52%4961.36 CDP
Port Costa522662421.92%1,6840.16 CDP