Cities in Contra Costa County, California by Population (2024)

There are 62 cities in Contra Costa County, California.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Oakland1California420,233440,873-1.21%7,50955.96
Stockton2California322,615321,0230.12%5,11363.09
Hayward3California150,906162,602-1.9%3,29445.82
Concord4California119,994125,256-1.08%3,92530.57
Antioch5California115,277115,2510.01%3,95229.17
Berkeley6California113,694124,206-2.26%10,89910.43
Richmond7California112,235116,367-0.91%3,73630.04
San Ramon8California85,29086,616-0.39%4,25220.06
Livermore9California81,52287,880-1.91%3,06826.57
Pittsburg10California78,53976,6050.62%4,44317.68
Pleasanton11California73,70279,676-1.99%3,05324.14
Walnut Creek12California67,89970,039-0.78%3,43619.76
Brentwood13California67,79164,4631.24%4,56014.87
Oakley14California45,90843,4681.35%2,89315.87
Danville15California41,93743,527-0.94%2,32018.08
Martinez16California35,70737,187-1.03%2,82412.64
Pleasant Hill17California33,22634,600-1.02%4,6967.08
San Pablo18California30,70032,078-1.11%11,7002.62
Hercules19California25,83126,009-0.17%4,0286.41
El Cerrito20California25,19925,967-0.76%6,8623.67
Lafayette21California24,71725,371-0.66%1,64515.02
Bay Point22California23,43625,378-2.03%3,6476.43
Orinda23California19,19419,516-0.41%1,49312.85
Albany24California18,60520,225-2.13%10,3941.79
Pinole25California18,16119,003-1.14%3,5585.10
Moraga26California16,54616,868-0.48%1,7499.46
El Sobrante27California15,55514,7790.19%5,0243.10
Alamo28California14,84613,8641.69%1,5129.82
Discovery Bay29California14,82015,904-1.8%2,6505.59
Clayton30California10,74611,062-0.73%2,7983.84
Blackhawk31California10,65410,5900.15%1,8455.78
Piedmont32California10,37111,251-2.08%6,1011.70
Rodeo33California8,85210,023-2.65%2,3623.75
Contra Costa Centre34California7,1016,6671.56%11,1480.64
Camino Tassajara35California6,1565,870-0.66%4,8241.28
Saranap36California6,1126,027-0.2%5,3851.14
Tara Hills37California5,4464,9152.29%8,1650.67
Kensington38California5,3515,1710.39%5,5510.96
Pacheco39California4,8654,775-1.78%6,4780.75
San Miguel40California4,7553,2538.59%4,5291.05
Crockett41California3,9123,2054.52%3,6841.06
Rollingwood42California3,3793,612-1.52%19,5320.17
North Richmond43California3,3464,258-5.48%2,4071.39
Reliez Valley44California3,2343,3210.69%1,3702.36
Vine Hill45California3,2063,228-0.16%2,1341.50
East Richmond Heights46California3,1453,473-2.18%5,4220.58
Mountain View47California2,4601,8726.35%8,5710.29
Bayview48California2,3042,754-4.64%7,5540.30
Knightsen49California2,1921,10014.23%2628.36
Montalvin Manor50California2,1212,490-1.71%6,6070.32
Bethel Island51California1,9712,015-0.56%3755.25
Byron52California1,7792,057-3.73%2736.52
Norris Canyon53California1,0727905.82%2973.61
North Gate54California1,0607408.16%1,4420.73
Acalanes Ridge55California1,0478754.28%2,2710.46
Sunol56California1,0058354.47%3628.26
Shell Ridge57California1,0011,081-1.96%2,3280.43
Castle Hill58California8561,164-8.25%1,4630.58
Alhambra Valley59California7871,051-7.63%4881.61
Diablo60California710834-4.18%5211.36
Clyde61California705737-1.12%5,0000.14
Port Costa62California2592421.57%1,6390.16
showing: 62 rows

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Contra Costa County, California?

Oakland is the largest city in Contra Costa County.

What is the smallest city in Contra Costa County, California?

Port Costa is the smallest city in Contra Costa County.

How many cities are in Contra Costa County?

There are 62 cities in Contra Costa County, California.

Frequently Asked Questions