Demographics of Fairfield city, California

Fairfield city, California had 122,489 people on July 1, 2025, by the Census Bureau’s estimate: +2,599 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Fairfield city, in four figures

122,489
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 120,785 ±65.; +2.2%
Change since July 2020: +2,599 people.; 36.9 ±0.6
Median age: ACS 2020–⁠2024.; $101,895 ±$3,112
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Fairfield city, California's population grew 2.2% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Fairfield city, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Fairfield city, California's population grew 2.2% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Fairfield city, California's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	119,890	100.0	100.0
2021	120,033	100.1	100.2
2022	120,220	100.3	100.7
2023	121,185	101.1	101.6
2024	122,313	102.0	102.5
2025	122,489	102.2	103.1

Population of Fairfield city, California on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	119,890	—
2021	120,033	+143
2022	120,220	+187
2023	121,185	+965
2024	122,313	+1,128
2025	122,489	+176

Age, 2020–2024

The median age is 36.9 ±0.6: for men 36.2 ±0.9 and for women 38.1 ±1.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Fairfield city by age, ACS 2020–2024
Age	People	Share	California	United States
Under 5	7,805 ±644	6.5% ±0.5	5.5% ±<0.1	5.6% ±<0.1
5 to 17	21,279 ±1,102	17.6% ±0.9	16.5% ±<0.1	16.3% ±<0.1
18 to 24	11,177 ±825	9.3% ±0.7	9.1% ±<0.1	9.1% ±<0.1
25 to 44	34,080 ±1,265	28.2% ±1.0	28.7% ±<0.1	26.9% ±<0.1
45 to 64	28,393 ±1,124	23.5% ±0.9	24.6% ±<0.1	24.8% ±<0.1
65 and over	18,051 ±955	14.9% ±0.8	15.7% ±<0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $101,895 ±$3,112, and income per person $43,473 ±$1,465, in 2024 dollars. The median is $99,122 ±$310 in California and $80,734 ±$166 in the United States.

Households by income

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Households in Fairfield city by income, ACS 2020–2024
Household income	Households	Share	California	United States
Under $25,000	3,582 ±510	9.2% ±1.3	12.5% ±0.1	14.6% ±<0.1
$25,000 to $49,999	5,056 ±600	13.0% ±1.5	13.3% ±0.1	16.7% ±<0.1
$50,000 to $74,999	5,660 ±654	14.6% ±1.7	13.0% ±0.1	15.5% ±<0.1
$75,000 to $99,999	4,728 ±600	12.2% ±1.5	11.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	8,200 ±654	21.2% ±1.6	17.8% ±0.1	17.5% ±<0.1
$150,000 to $199,999	4,443 ±465	11.5% ±1.2	11.3% ±0.1	9.6% ±<0.1
$200,000 or more	7,088 ±517	18.3% ±1.3	20.5% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Fairfield city by age, ACS 2020–2024
Age	Below poverty	Rate	California	United States
All ages	12,155 ±1,448	10.2% ±1.2	12.0% ±0.1	12.5% ±0.1
Under 18	3,932 ±679	13.6% ±2.2	15.0% ±0.1	16.1% ±0.1
18 to 59	6,124 ±755	9.2% ±1.1	11.0% ±0.1	11.6% ±0.1
60 and over	2,099 ±371	8.6% ±1.5	11.5% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Fairfield city, ACS 2020–2024
Measure	Fairfield city	California	United States
Housing units	40,391 ±710	14,644,735 ±1,665	143,775,355 ±10,234
Occupied	96.0% ±0.7	92.5% ±0.1	89.9% ±0.1
Vacant	4.0% ±0.9	7.5% ±0.1	10.1% ±0.1
Owner occupied	61.3% ±1.9	55.9% ±0.3	65.2% ±0.3
Renter occupied	38.7% ±1.7	44.1% ±0.2	34.8% ±0.1
Median home value	$624,300 ±$10,455	$734,700 ±$1,307	$332,700 ±$236
Median gross rent	$2,266 ±$47	$2,036 ±$5	$1,413 ±$2
Median year built	1986 ±1	1976 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Fairfield city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	California	United States
Hispanic or Latino	39,556 ±1,614	32.7% ±1.3	40.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	31,939 ±1,665	26.4% ±1.4	33.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	17,126 ±1,586	14.2% ±1.3	5.2% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	21,565 ±1,338	17.9% ±1.1	15.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	53 to 363	< 0.1% to 0.3%	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	1,217 ±375	1.0% ±0.3	0.3% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	1,005 ±348	0.8% ±0.3	0.6% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	8,169 ±818	6.8% ±0.7	4.4% ±<0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Fairfield city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	California	United States
Born in the state	68,296 ±1,803	56.5% ±1.5	56.5% ±0.1	57.3% ±<0.1
Born in another state	20,791 ±1,379	17.2% ±1.1	15.0% ±0.1	26.9% ±<0.1
Born a citizen outside the states	3,498 ±570	2.9% ±0.5	1.5% ±<0.1	1.7% ±<0.1
Born abroad	28,200 ±1,362	23.3% ±1.1	27.0% ±0.1	14.1% ±<0.1
Naturalized citizens	15,687 ±1,049	13.0% ±0.9	14.7% ±0.1	7.4% ±<0.1
Not citizens	12,513 ±1,139	10.4% ±0.9	12.3% ±0.1	6.8% ±<0.1

Fairfield city among the places of California

51st of 661 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the California page.

Places of California near Fairfield city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Simi Valley city	125,634 ±100
Thousand Oaks city	125,205 ±97
Clovis city	124,725 ±114
Vallejo city	124,268 ±96
Concord city	124,035 ±92
Fairfield city	120,785 ±65
Berkeley city	120,257 ±59
Antioch city	116,477 ±144
Richmond city	115,505 ±89
Carlsbad city	114,373 ±104
Murrieta city	112,064 ±62

Elsewhere on the site

Reported crime in Fairfield city, California

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026