Demographics of Adams County, Idaho

Adams County, Idaho had 5,013 people on July 1, 2025, by the Census Bureau’s estimate: +590 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

5,013
Population: July 1, 2025, Vintage 2025 estimate.; +13.3%
Change since July 2020: +590 people.; 53.9 ±1.7
Median age: ACS 2020–⁠2024.; $61,808 ±$4,677
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, Idaho's population grew 13.3% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Adams County, Idaho'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, Idaho's population grew 13.3% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Adams County, Idaho'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	4,423	100.0	100.0
2021	4,619	104.4	100.2
2022	4,778	108.0	100.7
2023	4,895	110.7	101.6
2024	5,010	113.3	102.5
2025	5,013	113.3	103.1

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Population of Adams County, Idaho on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	4,423	+45	−1	0	+53
2021	4,619	+196	−17	+2	+227
2022	4,778	+159	−35	+1	+181
2023	4,895	+117	−21	+5	+134
2024	5,010	+115	−4	+4	+114
2025	5,013	+3	−3	+4	+2

Age, 2020–2024

The median age is 53.9 ±1.7: for men 54.3 ±1.5 and for women 53.0 ±3.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Adams County by age, ACS 2020–2024
Age	People	Share	Idaho	United States
Under 5	174 ±60	3.7% ±1.3	5.9% ±<0.1	5.6% ±<0.1
5 to 17	653 ±130	13.8% ±2.7	18.2% ±0.2	16.3% ±<0.1
18 to 24	270 ±82	5.7% ±1.7	9.8% ±0.1	9.1% ±<0.1
25 to 44	878 ±154	18.5% ±3.2	26.1% ±0.2	26.9% ±<0.1
45 to 64	1,340 ±179	28.2% ±3.8	23.0% ±0.2	24.8% ±<0.1
65 and over	1,429 ±159	30.1% ±3.4	17.0% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $61,808 ±$4,677, and income per person $36,243 ±$4,021, in 2024 dollars. The median is $77,800 ±$743 in Idaho and $80,734 ±$166 in the United States.

Households by income

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Households in Adams County by income, ACS 2020–2024
Household income	Households	Share	Idaho	United States
Under $25,000	316 ±100	17.8% ±5.5	12.5% ±0.3	14.6% ±<0.1
$25,000 to $49,999	315 ±86	17.7% ±4.7	17.6% ±0.4	16.7% ±<0.1
$50,000 to $74,999	437 ±115	24.6% ±6.2	18.1% ±0.4	15.5% ±<0.1
$75,000 to $99,999	230 ±76	13.0% ±4.2	14.7% ±0.4	12.6% ±<0.1
$100,000 to $149,999	181 ±64	10.2% ±3.5	19.3% ±0.4	17.5% ±<0.1
$150,000 to $199,999	54 to 160	6.0% ±3.0	8.7% ±0.3	9.6% ±<0.1
$200,000 or more	190 ±80	10.7% ±4.4	9.2% ±0.3	13.4% ±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%.

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 Adams County by age, ACS 2020–2024
Age	Below poverty	Rate	Idaho	United States
All ages	844 ±243	17.9% ±5.2	10.6% ±0.3	12.5% ±0.1
Under 18	52 to 228	6.8% to 27.4%	12.4% ±0.5	16.1% ±0.1
18 to 59	389 ±132	19.1% ±6.1	10.4% ±0.3	11.6% ±0.1
60 and over	315 ±143	17.0% ±7.5	9.1% ±0.4	11.0% ±<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%.

Housing, 2020–2024

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Housing in Adams County, ACS 2020–2024
Measure	Adams County	Idaho	United States
Housing units	2,674 ±12	795,014 ±223	143,775,355 ±10,234
Occupied	66.4% ±4.5	89.7% ±0.3	89.9% ±0.1
Vacant	33.6% ±4.4	10.3% ±0.3	10.1% ±0.1
Owner occupied	84.7% ±5.2	72.1% ±0.4	65.2% ±0.3
Renter occupied	15.3% ±4.6	27.9% ±0.4	34.8% ±0.1
Median home value	$376,500 ±$35,418	$418,600 ±$2,550	$332,700 ±$236
Median gross rent	$830 ±$58	$1,238 ±$16	$1,413 ±$2
Median year built	1986 ±3	1991 ±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 Adams County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Idaho	United States
Hispanic or Latino	235 ±0	5.0% ±<0.1	13.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	4,128 ±85	87.0% ±1.8	78.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 22	0% to 0.5%	0.7% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 12	0% to 0.3%	1.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	47 to 145	1.0% to 3.1%	0.7% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 9	0% to 0.2%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 12	0% to 0.3%	0.6% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	274 ±111	5.8% ±2.3	4.2% ±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 Adams County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Idaho	United States
Born in the state	2,022 ±225	42.6% ±4.7	43.9% ±0.3	57.3% ±<0.1
Born in another state	2,670 ±222	56.3% ±4.7	49.1% ±0.3	26.9% ±<0.1
Born a citizen outside the states	0 to 67	0% to 1.4%	1.0% ±0.1	1.7% ±<0.1
Born abroad	0 to 56	0% to 1.2%	5.9% ±0.2	14.1% ±<0.1
Naturalized citizens	0 to 13	0% to 0.3%	2.7% ±0.1	7.4% ±<0.1
Not citizens	0 to 49	0% to 1.0%	3.2% ±0.2	6.8% ±<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%.

Adams County among the counties of Idaho

39th of 44 by population, July 2025. Every one is listed on the Idaho page.

Counties of Idaho near Adams County in population, July 2025
County	July 2025	Change since 2020
Power County	8,246	+4.6%
Caribou County	7,252	+3.4%
Bear Lake County	6,727	+5.7%
Lincoln County	5,603	+9.1%
Oneida County	5,085	+11.4%
Adams County	5,013	+13.3%
Custer County	4,636	+8.6%
Lewis County	3,704	+4.8%
Butte County	2,783	+7.8%
Camas County	1,316	+21.7%
Clark County	783	−1.0%

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