Demographics of Ammon city, Idaho

Ammon city, Idaho had 20,119 people on July 1, 2025, by the Census Bureau’s estimate: +2,242 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Ammon city, in four figures

20,119
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 19,064 ±29.; +12.5%
Change since July 2020: +2,242 people.; 32.9 ±1.9
Median age: ACS 2020–⁠2024.; $86,121 ±$11,321
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.

Ammon city, Idaho's population grew 12.5% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Ammon city, 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).

Source: The Census Bureau

About this chart

The figures

Ammon city, Idaho's population grew 12.5% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Ammon city, 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	17,877	100.0	100.0
2021	18,681	104.5	100.2
2022	19,033	106.5	100.7
2023	19,641	109.9	101.6
2024	20,126	112.6	102.5
2025	20,119	112.5	103.1

Population of Ammon city, Idaho on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	17,877	—
2021	18,681	+804
2022	19,033	+352
2023	19,641	+608
2024	20,126	+485
2025	20,119	−7

Age, 2020–2024

The median age is 32.9 ±1.9: for men 31.8 ±1.1 and for women 35.9 ±3.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Ammon city by age, ACS 2020–2024
Age	People	Share	Idaho	United States
Under 5	1,365 ±280	7.2% ±1.5	5.9% ±<0.1	5.6% ±<0.1
5 to 17	4,492 ±479	23.6% ±2.5	18.2% ±0.2	16.3% ±<0.1
18 to 24	1,274 ±298	6.7% ±1.6	9.8% ±0.1	9.1% ±<0.1
25 to 44	5,707 ±572	29.9% ±3.0	26.1% ±0.2	26.9% ±<0.1
45 to 64	3,709 ±467	19.5% ±2.4	23.0% ±0.2	24.8% ±<0.1
65 and over	2,517 ±432	13.2% ±2.3	17.0% ±0.2	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $86,121 ±$11,321, and income per person $36,741 ±$2,370, 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 Ammon city by income, ACS 2020–2024
Household income	Households	Share	Idaho	United States
Under $25,000	712 ±337	11.3% ±5.3	12.5% ±0.3	14.6% ±<0.1
$25,000 to $49,999	826 ±207	13.1% ±3.2	17.6% ±0.4	16.7% ±<0.1
$50,000 to $74,999	1,280 ±285	20.3% ±4.4	18.1% ±0.4	15.5% ±<0.1
$75,000 to $99,999	872 ±188	13.8% ±2.9	14.7% ±0.4	12.6% ±<0.1
$100,000 to $149,999	1,266 ±255	20.0% ±3.9	19.3% ±0.4	17.5% ±<0.1
$150,000 to $199,999	571 ±154	9.0% ±2.4	8.7% ±0.3	9.6% ±<0.1
$200,000 or more	790 ±155	12.5% ±2.3	9.2% ±0.3	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 Ammon city by age, ACS 2020–2024
Age	Below poverty	Rate	Idaho	United States
All ages	1,020 ±500	5.4% ±2.7	10.6% ±0.3	12.5% ±0.1
Under 18	172 to 664	3.0% to 11.4%	12.4% ±0.5	16.1% ±0.1
18 to 59	438 ±202	4.5% ±2.1	10.4% ±0.3	11.6% ±0.1
60 and over	79 to 249	2.5% to 7.3%	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 Ammon city, ACS 2020–2024
Measure	Ammon city	Idaho	United States
Housing units	6,720 ±416	795,014 ±223	143,775,355 ±10,234
Occupied	94.0% ±8.1	89.7% ±0.3	89.9% ±0.1
Vacant	6.0% ±2.9	10.3% ±0.3	10.1% ±0.1
Owner occupied	69.1% ±5.1	72.1% ±0.4	65.2% ±0.3
Renter occupied	30.9% ±4.8	27.9% ±0.4	34.8% ±0.1
Median home value	$381,800 ±$14,746	$418,600 ±$2,550	$332,700 ±$236
Median gross rent	$1,372 ±$194	$1,238 ±$16	$1,413 ±$2
Median year built	2004 ±1	1991 ±1	1980 ±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%.

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 Ammon city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Idaho	United States
Hispanic or Latino	2,205 ±670	11.6% ±3.5	13.6% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	16,062 ±695	84.3% ±3.6	78.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 47	0% to 0.2%	0.7% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	99 to 365	0.5% to 1.9%	1.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	2 to 46	< 0.1% to 0.2%	0.7% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 19	0% to 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	5 to 191	< 0.1% to 1.0%	0.6% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	426 ±190	2.2% ±1.0	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 Ammon city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Idaho	United States
Born in the state	10,354 ±594	54.3% ±3.1	43.9% ±0.3	57.3% ±<0.1
Born in another state	7,766 ±592	40.7% ±3.1	49.1% ±0.3	26.9% ±<0.1
Born a citizen outside the states	27 to 249	0.1% to 1.3%	1.0% ±0.1	1.7% ±<0.1
Born abroad	806 ±280	4.2% ±1.5	5.9% ±0.2	14.1% ±<0.1
Naturalized citizens	396 ±157	2.1% ±0.8	2.7% ±0.1	7.4% ±<0.1
Not citizens	171 to 649	0.9% to 3.4%	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%.

Ammon city among the places of Idaho

15th of 36 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Idaho page.

Places of Idaho near Ammon city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Rexburg city	40,543 ±33
Lewiston city	34,651 ±45
Eagle city	32,855 ±39
Kuna city	27,158 ±31
Moscow city	26,286 ±22
Ammon city	19,064 ±29
Mountain Home city	16,493 ±52
Hayden city	16,338 ±57
Chubbuck city	16,126 ±28
Star city	14,745 ±54
Jerome city	12,930 ±23

Rankings this appears in

No. 3 Places in Idaho by median household income
No. 5 Places in Idaho by homeownership rate
No. 5 Places in Idaho by median rent
No. 5 Places in Idaho by per capita income
No. 11 Places in Idaho by foreign-born share
No. 12 Places in Idaho by median age

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