Cities in Napa County, California by Population (2024)

There are 21 cities in Napa 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)
Vallejo1California121,778125,894-0.84%4,00130.43
Fairfield2California121,079119,8330.26%2,91241.59
Napa3California76,87879,334-0.79%4,26018.05
Benicia4California26,20327,106-0.85%2,04512.81
American Canyon5California21,19621,799-0.71%3,4886.08
Sonoma6California10,58210,729-0.35%3,8562.74
Boyes Hot Springs7California6,7428,006-4.48%6,3601.06
St. Helena8California5,2235,419-0.93%1,0544.96
Calistoga9California5,0035,222-1.09%1,9402.58
Fetters Hot Springs-Agua Caliente10California4,8943,5547.35%3,3501.46
Yountville11California3,3323,428-0.71%2,2361.49
El Verano12California2,8123,256-3.8%2,4561.15
Angwin13California2,0473,415-14.32%4244.83
Temelec14California1,4711,915-7.02%9261.59
Deer Park15California8987723.69%1605.62
Silverado Resort16California8531,171-8.48%4511.89
Glen Ellen17California8421,214-8.48%4012.10
Eldridge18California500960-18.7%7670.65
Moskowite Corner19California2206920.22%782.83
Rutherford20California1301006.56%771.68
Oakville21California0740%01.36

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 Napa County, California?

Vallejo is the largest city in Napa County.

What is the smallest city in Napa County, California?

Oakville is the smallest city in Napa County.

How many cities are in Napa County?

There are 21 cities in Napa County, California.

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