California · Census place 0623182
Fairfield, California
Fairfield is a city in Solano County, California with an estimated 122,646 residents on July 1, 2024. It is the 52nd largest of 468 incorporated places of 1,000+ people in the state.
- Population 2024
- 122,646
- #52 of 468 in California
- Change since 2020
- +2.3%
- +2,756 people
- Land area
- 41.6 sq mi
- + 0.28 sq mi water
- Density
- 2,949 / sq mi
- State median 3,725
Measure from here
Tools and pages that start from Fairfield
Fairfield population, 2020 to 2024
Fairfield added 2,756 residents from July 2020 to July 2024, a change of +2.3%. In the latest year it moved by +1,521. Among 429 California places of 5,000 or more, that growth ranks 88th; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so Fairfield is 3.3 times that size.
Fairfield covers 41.59 square miles of land and 0.28 of water, for 2,949 people per square mile of land. The median California place of 5,000+ has 3,725, so Fairfield is less dense than the typical town.
What county Fairfield is in
All of Fairfield's residents live in Solano County, which had 455,101 residents in 2024. Fairfield holds 26.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.
ZIP codes in Fairfield
3 ZIP Code Tabulation Areas (ZCTAs) overlap Fairfield by at least 10% of the ZCTA's or the city's land: 94533, 94534, 94535. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.
Where Fairfield is
The Census internal point of Fairfield is at 38.262100, -122.032400. Sacramento, the capital, is 36.4 miles NE in a straight line. The nearest larger place is Vallejo, CA (123,475 people), 16.5 miles away. The nearest city of 100,000 or more is Vacaville, CA, 7.5 miles away. The ground at the internal point is about 12 m (39 ft) above sea level.
Internal point
- Decimal
- 38.262100, -122.032400
- DMS
- 38°15'43.56"N 122°01'56.64"W
- UTM
- 10N 584650.4E 4235338.9N
- Geohash
- 9qc1xj6sy
- Plus code
- 84CV7X69+R2
- Time zone
- America/Los_Angeles
Daylight in Fairfield
At 38.26° N, Fairfield gets about 14 h 50 min of daylight around the June solstice and 9 h 30 min around the December solstice, a swing of 5 h 20 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026. Month-by-month sunrise and sunset times are on the Fairfield daylight page.
Places near Fairfield
The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Suisun City, 1.5 miles away, with 29,614 people.
Questions people ask
What is the population of Fairfield, CA?
122,646 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 2,756 (2.3%) from 119,890 in July 2020.
What county is Fairfield in?
Solano County. All of its residents live in that county.
What ZIP codes cover Fairfield?
3 ZIP Code Tabulation Areas overlap it by at least 10% of either area: 94533, 94534, 94535.
How far is Fairfield from Sacramento?
36.4 miles (58.5 km) in a straight line, heading NE from Fairfield.
What is the nearest larger city to Fairfield?
Vallejo, CA, with 123,475 residents, 16.5 miles away between internal points.
Sources and data as of
Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.
- 01Census Vintage 2024 subcounty population estimates
- 02Census 2024 Gazetteer, places
- 03Census 2020 ZCTA to place relationship file
- 04Census 2024 cartographic boundary file, counties (1:5,000,000)
- 05Open-Meteo forecast API (time zone and Copernicus GLO-90 elevation) (last verified 2026-09-30)
How every number is computed: methodology. Spotted a wrong figure? Report an error.