Demographics of Onalaska city, Wisconsin

Onalaska city, Wisconsin had 20,297 people on July 1, 2025, by the Census Bureau’s estimate: +1,439 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Onalaska city, in four figures

20,297
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 19,348 ±28.; +7.6%
Change since July 2020: +1,439 people.; 40.7 ±2.0
Median age: ACS 2020–⁠2024.; $85,867 ±$4,820
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.

Onalaska city, Wisconsin's population grew 7.6% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Onalaska city, Wisconsin'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 — incorporated places and New England towns

About this chart

The figures

Onalaska city, Wisconsin's population grew 7.6% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Onalaska city, Wisconsin'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	18,858	100.0	100.0
2021	19,014	100.8	100.2
2022	19,349	102.6	100.7
2023	19,592	103.9	101.6
2024	19,873	105.4	102.5
2025	20,297	107.6	103.1

Population of Onalaska city, Wisconsin on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	18,858	—
2021	19,014	+156
2022	19,349	+335
2023	19,592	+243
2024	19,873	+281
2025	20,297	+424

Age, 2020–2024

The median age is 40.7 ±2.0: for men 39.1 ±2.7 and for women 42.8 ±3.8. 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 Onalaska city by age, ACS 2020–2024
Age	People	Share	Wisconsin	United States
Under 5	1,065 ±298	5.5% ±1.5	5.3% ±<0.1	5.6% ±<0.1
5 to 17	2,679 ±411	13.8% ±2.1	16.0% ±0.1	16.3% ±<0.1
18 to 24	1,532 ±444	7.9% ±2.3	9.3% ±0.1	9.1% ±<0.1
25 to 44	5,437 ±578	28.1% ±3.0	25.2% ±0.1	26.9% ±<0.1
45 to 64	4,680 ±494	24.2% ±2.6	25.6% ±0.1	24.8% ±<0.1
65 and over	3,955 ±499	20.4% ±2.6	18.5% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $85,867 ±$4,820, and income per person $52,580 ±$4,342, in 2024 dollars. The median is $77,485 ±$455 in Wisconsin and $80,734 ±$166 in the United States.

Households by income

2 more columns on a wider screen

Households in Onalaska city by income, ACS 2020–2024
Household income	Households	Share	Wisconsin	United States
Under $25,000	778 ±250	8.6% ±2.8	13.1% ±0.2	14.6% ±<0.1
$25,000 to $49,999	1,430 ±367	15.9% ±4.0	17.9% ±0.2	16.7% ±<0.1
$50,000 to $74,999	1,675 ±377	18.6% ±4.1	17.5% ±0.2	15.5% ±<0.1
$75,000 to $99,999	1,272 ±307	14.1% ±3.4	13.8% ±0.2	12.6% ±<0.1
$100,000 to $149,999	1,817 ±357	20.2% ±3.9	19.1% ±0.2	17.5% ±<0.1
$150,000 to $199,999	840 ±218	9.3% ±2.4	9.4% ±0.1	9.6% ±<0.1
$200,000 or more	1,190 ±265	13.2% ±2.9	9.2% ±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).

2 more columns on a wider screen

Poverty rate in Onalaska city by age, ACS 2020–2024
Age	Below poverty	Rate	Wisconsin	United States
All ages	1,162 ±375	6.0% ±2.0	10.6% ±0.1	12.5% ±0.1
Under 18	45 to 393	1.3% to 10.6%	12.8% ±0.3	16.1% ±0.1
18 to 59	718 ±289	7.2% ±2.9	10.3% ±0.2	11.6% ±0.1
60 and over	225 ±109	4.0% ±1.9	9.3% ±0.2	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

1 more column on a wider screen

Housing in Onalaska city, ACS 2020–2024
Measure	Onalaska city	Wisconsin	United States
Housing units	9,120 ±381	2,778,572 ±1,533	143,775,355 ±10,234
Occupied	98.7% ±0.3	89.2% ±0.2	89.9% ±0.1
Vacant	0.2% to 2.4%	10.8% ±0.2	10.1% ±0.1
Owner occupied	63.1% ±3.8	67.8% ±0.3	65.2% ±0.3
Renter occupied	36.9% ±4.8	32.2% ±0.2	34.8% ±0.1
Median home value	$288,900 ±$16,267	$266,500 ±$1,051	$332,700 ±$236
Median gross rent	$1,130 ±$104	$1,087 ±$4	$1,413 ±$2
Median year built	1991 ±2	1975 ±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

2 more columns on a wider screen

People in Onalaska city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Wisconsin	United States
Hispanic or Latino	498 ±214	2.6% ±1.1	8.0% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	16,362 ±611	84.6% ±3.2	78.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	527 ±257	2.7% ±1.3	5.9% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	1,032 ±372	5.3% ±1.9	2.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 246	0% to 1.3%	0.5% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 49	0% to 0.3%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 77	0% to 0.4%	0.3% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	762 ±358	3.9% ±1.9	3.7% ±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).

2 more columns on a wider screen

People in Onalaska city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Wisconsin	United States
Born in the state	12,481 ±761	64.5% ±3.9	70.3% ±0.1	57.3% ±<0.1
Born in another state	5,952 ±750	30.8% ±3.9	23.6% ±0.1	26.9% ±<0.1
Born a citizen outside the states	48 to 270	0.2% to 1.4%	0.9% ±<0.1	1.7% ±<0.1
Born abroad	756 ±202	3.9% ±1.0	5.2% ±0.1	14.1% ±<0.1
Naturalized citizens	691 ±191	3.6% ±1.0	2.5% ±0.1	7.4% ±<0.1
Not citizens	8 to 122	< 0.1% to 0.6%	2.7% ±0.1	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%.

Onalaska city among the places of Wisconsin

42nd of 158 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Wisconsin page.

Places of Wisconsin near Onalaska city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Middleton city	22,301 ±41
Pleasant Prairie village	21,669 ±29
Howard village	21,087 ±22
Germantown village	20,962 ±32
South Milwaukee city	20,442 ±49
Onalaska city	19,348 ±28
Fox Crossing village	19,131 ±32
Oconomowoc city	19,080 ±55
Wisconsin Rapids city	18,722 ±78
Marshfield city	18,700 ±192
Menasha city	18,273 ±84

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

Data retrieved September 25, 2026