Demographics of Adams County, Colorado

Adams County, Colorado had 554,668 people on July 1, 2025, by the Census Bureau’s estimate: +34,257 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Adams County, in four figures

554,668
Population: July 1, 2025, Vintage 2025 estimate.; +6.6%
Change since July 2020: +34,257 people.; 34.8 ±0.1
Median age: ACS 2020–⁠2024.; $94,571 ±$1,524
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Adams County, Colorado's population grew 6.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Adams County, Colorado'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).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Adams County, Colorado's population grew 6.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Adams County, Colorado'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	520,411	100.0	100.0
2021	523,159	100.5	100.2
2022	528,035	101.5	100.7
2023	537,158	103.2	101.6
2024	549,257	105.5	102.5
2025	554,668	106.6	103.1

3 more columns on a wider screen

Population of Adams County, Colorado on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	520,411	+831	+591	+36	+52
2021	523,159	+2,748	+2,346	+480	−502
2022	528,035	+4,876	+2,245	+2,508	+302
2023	537,158	+9,123	+2,918	+4,586	+1,610
2024	549,257	+12,099	+3,089	+8,050	+951
2025	554,668	+5,411	+3,356	+1,593	+383

Age, 2020–2024

The median age is 34.8 ±0.1: for men 34.4 ±0.1 and for women 35.2 ±0.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

2 more columns on a wider screen

People in Adams County by age, ACS 2020–2024
Age	People	Share	Colorado	United States
Under 5	33,697 ±129	6.4% ±<0.1	5.3% ±<0.1	5.6% ±<0.1
5 to 17	98,142 ±1,707	18.5% ±0.3	15.7% ±0.1	16.3% ±<0.1
18 to 24	48,472 ±1,386	9.1% ±0.3	9.1% ±0.1	9.1% ±<0.1
25 to 44	168,690 ±1,877	31.8% ±0.4	30.3% ±0.1	26.9% ±<0.1
45 to 64	121,299 ±1,626	22.9% ±0.3	23.9% ±0.1	24.8% ±<0.1
65 and over	59,925 ±1,582	11.3% ±0.3	15.6% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $94,571 ±$1,524, and income per person $42,206 ±$661, in 2024 dollars. The median is $95,470 ±$578 in Colorado and $80,734 ±$166 in the United States.

Households by income

2 more columns on a wider screen

Households in Adams County by income, ACS 2020–2024
Household income	Households	Share	Colorado	United States
Under $25,000	19,375 ±1,370	10.3% ±0.7	11.2% ±0.2	14.6% ±<0.1
$25,000 to $49,999	24,945 ±1,387	13.2% ±0.7	13.6% ±0.2	16.7% ±<0.1
$50,000 to $74,999	28,528 ±1,311	15.1% ±0.7	14.6% ±0.2	15.5% ±<0.1
$75,000 to $99,999	25,904 ±1,324	13.7% ±0.7	12.8% ±0.2	12.6% ±<0.1
$100,000 to $149,999	40,224 ±1,666	21.3% ±0.9	19.2% ±0.2	17.5% ±<0.1
$150,000 to $199,999	24,074 ±1,315	12.8% ±0.7	11.7% ±0.2	9.6% ±<0.1
$200,000 or more	25,680 ±1,143	13.6% ±0.6	17.0% ±0.2	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).

2 more columns on a wider screen

Poverty rate in Adams County by age, ACS 2020–2024
Age	Below poverty	Rate	Colorado	United States
All ages	51,582 ±3,254	9.8% ±0.6	9.4% ±0.2	12.5% ±0.1
Under 18	17,768 ±1,574	13.6% ±1.2	11.1% ±0.3	16.1% ±0.1
18 to 59	25,472 ±1,680	8.2% ±0.5	9.1% ±0.2	11.6% ±0.1
60 and over	8,342 ±863	9.6% ±1.0	8.7% ±0.2	11.0% ±<0.1

Housing, 2020–2024

1 more column on a wider screen

Housing in Adams County, ACS 2020–2024
Measure	Adams County	Colorado	United States
Housing units	195,793 ±113	2,589,053 ±653	143,775,355 ±10,234
Occupied	96.4% ±0.4	91.7% ±0.2	89.9% ±0.1
Vacant	3.6% ±0.4	8.3% ±0.2	10.1% ±0.1
Owner occupied	68.6% ±0.8	66.2% ±0.3	65.2% ±0.3
Renter occupied	31.4% ±0.8	33.8% ±0.3	34.8% ±0.1
Median home value	$484,200 ±$3,903	$539,400 ±$2,069	$332,700 ±$236
Median gross rent	$1,781 ±$21	$1,761 ±$7	$1,413 ±$2
Median year built	1991 ±1	1988 ±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

2 more columns on a wider screen

People in Adams County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Colorado	United States
Hispanic or Latino	226,823 ±0	42.8% ±<0.1	22.5% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	239,594 ±1,181	45.2% ±0.2	64.8% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	17,757 ±994	3.3% ±0.2	3.8% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	20,270 ±827	3.8% ±0.2	3.2% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	1,554 ±303	0.3% ±0.1	0.4% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	833 ±170	0.2% ±<0.1	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	3,685 ±1,003	0.7% ±0.2	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	19,709 ±1,583	3.7% ±0.3	4.6% ±0.1	4.3% ±<0.1

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).

2 more columns on a wider screen

People in Adams County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Colorado	United States
Born in the state	266,776 ±4,779	50.3% ±0.9	41.2% ±0.2	57.3% ±<0.1
Born in another state	172,284 ±4,184	32.5% ±0.8	47.2% ±0.2	26.9% ±<0.1
Born a citizen outside the states	8,279 ±1,069	1.6% ±0.2	1.7% ±0.1	1.7% ±<0.1
Born abroad	82,886 ±2,923	15.6% ±0.6	9.8% ±0.1	14.1% ±<0.1
Naturalized citizens	29,427 ±1,803	5.5% ±0.3	4.7% ±0.1	7.4% ±<0.1
Not citizens	53,459 ±2,462	10.1% ±0.5	5.2% ±0.1	6.8% ±<0.1

Adams County among the counties of Colorado

5th of 64 by population, July 2025. Every one is listed on the Colorado page.

Counties of Colorado near Adams County in population, July 2025
County	July 2025	Change since 2020
El Paso County	757,040	+3.2%
Denver County	740,613	+3.2%
Arapahoe County	673,820	+2.8%
Jefferson County	580,451	−0.5%
Adams County	554,668	+6.6%
Douglas County	399,396	+10.8%
Weld County	378,426	+14.2%
Larimer County	377,292	+4.8%
Boulder County	328,560	−0.7%
Pueblo County	169,277	+0.6%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — 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

Data retrieved September 25, 2026