Demographics of Trempealeau County, Wisconsin

Trempealeau County, Wisconsin had 31,171 people on July 1, 2025, by the Census Bureau’s estimate: +346 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.

Trempealeau County, in four figures

31,171
Population: July 1, 2025, Vintage 2025 estimate.; +1.1%
Change since July 2020: +346 people.; 39.9 ±0.5
Median age: ACS 2020–⁠2024.; $76,313 ±$3,713
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.

Trempealeau County, Wisconsin's population grew 1.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Trempealeau County, 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).

Source: The Census Bureau

About this chart

The figures

Trempealeau County, Wisconsin's population grew 1.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Trempealeau County, 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	30,825	100.0	100.0
2021	30,741	99.7	100.2
2022	30,923	100.3	100.7
2023	31,006	100.6	101.6
2024	30,928	100.3	102.5
2025	31,171	101.1	103.1

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Population of Trempealeau County, Wisconsin on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	30,825	+55	+53	0	−3
2021	30,741	−84	+75	+5	−180
2022	30,923	+182	+58	+78	+70
2023	31,006	+83	+142	+89	−146
2024	30,928	−78	+119	+131	−326
2025	31,171	+243	+110	+31	+102

Age, 2020–2024

The median age is 39.9 ±0.5: for men 40.0 ±0.6 and for women 39.8 ±0.6. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Trempealeau County by age, ACS 2020–2024
Age	People	Share	Wisconsin	United States
Under 5	2,211 ±30	7.2% ±0.1	5.3% ±<0.1	5.6% ±<0.1
5 to 17	6,010 ±258	19.5% ±0.8	16.0% ±0.1	16.3% ±<0.1
18 to 24	2,139 ±142	6.9% ±0.5	9.3% ±0.1	9.1% ±<0.1
25 to 44	6,870 ±203	22.3% ±0.7	25.2% ±0.1	26.9% ±<0.1
45 to 64	7,851 ±210	25.5% ±0.7	25.6% ±0.1	24.8% ±<0.1
65 and over	5,758 ±246	18.7% ±0.8	18.5% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $76,313 ±$3,713, and income per person $37,226 ±$912, in 2024 dollars. The median is $77,485 ±$455 in Wisconsin and $80,734 ±$166 in the United States.

Households by income

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Households in Trempealeau County by income, ACS 2020–2024
Household income	Households	Share	Wisconsin	United States
Under $25,000	1,563 ±163	12.5% ±1.3	13.1% ±0.2	14.6% ±<0.1
$25,000 to $49,999	2,236 ±204	17.8% ±1.6	17.9% ±0.2	16.7% ±<0.1
$50,000 to $74,999	2,395 ±223	19.1% ±1.8	17.5% ±0.2	15.5% ±<0.1
$75,000 to $99,999	1,828 ±181	14.6% ±1.4	13.8% ±0.2	12.6% ±<0.1
$100,000 to $149,999	2,689 ±202	21.5% ±1.6	19.1% ±0.2	17.5% ±<0.1
$150,000 to $199,999	973 ±109	7.8% ±0.9	9.4% ±0.1	9.6% ±<0.1
$200,000 or more	849 ±112	6.8% ±0.9	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).

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Poverty rate in Trempealeau County by age, ACS 2020–2024
Age	Below poverty	Rate	Wisconsin	United States
All ages	3,013 ±506	9.9% ±1.7	10.6% ±0.1	12.5% ±0.1
Under 18	1,028 ±232	12.7% ±2.8	12.8% ±0.3	16.1% ±0.1
18 to 59	1,352 ±226	9.1% ±1.5	10.3% ±0.2	11.6% ±0.1
60 and over	633 ±99	8.5% ±1.3	9.3% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Trempealeau County, ACS 2020–2024
Measure	Trempealeau County	Wisconsin	United States
Housing units	13,431 ±59	2,778,572 ±1,533	143,775,355 ±10,234
Occupied	93.3% ±0.9	89.2% ±0.2	89.9% ±0.1
Vacant	6.7% ±0.9	10.8% ±0.2	10.1% ±0.1
Owner occupied	74.0% ±1.6	67.8% ±0.3	65.2% ±0.3
Renter occupied	26.0% ±1.8	32.2% ±0.2	34.8% ±0.1
Median home value	$216,700 ±$7,279	$266,500 ±$1,051	$332,700 ±$236
Median gross rent	$949 ±$46	$1,087 ±$4	$1,413 ±$2
Median year built	1977 ±2	1975 ±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 Trempealeau County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Wisconsin	United States
Hispanic or Latino	3,997 ±0	13.0% ±<0.1	8.0% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	25,871 ±68	83.9% ±0.2	78.6% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	100 ±38	0.3% ±0.1	5.9% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	139 ±32	0.5% ±0.1	2.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	47 ±22	0.2% ±0.1	0.5% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 12	0% to < 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	11 to 79	< 0.1% to 0.3%	0.3% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	635 ±77	2.1% ±0.2	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).

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People in Trempealeau County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Wisconsin	United States
Born in the state	23,434 ±379	76.0% ±1.2	70.3% ±0.1	57.3% ±<0.1
Born in another state	5,506 ±385	17.9% ±1.2	23.6% ±0.1	26.9% ±<0.1
Born a citizen outside the states	274 ±110	0.9% ±0.4	0.9% ±<0.1	1.7% ±<0.1
Born abroad	1,625 ±253	5.3% ±0.8	5.2% ±0.1	14.1% ±<0.1
Naturalized citizens	203 ±77	0.7% ±0.2	2.5% ±0.1	7.4% ±<0.1
Not citizens	1,422 ±237	4.6% ±0.8	2.7% ±0.1	6.8% ±<0.1

Trempealeau County among the counties of Wisconsin

43rd of 72 by population, July 2025. Every one is listed on the Wisconsin page.

Counties of Wisconsin near Trempealeau County in population, July 2025
County	July 2025	Change since 2020
Oconto County	40,195	+2.9%
Oneida County	38,131	+0.7%
Green County	37,227	+0.5%
Clark County	35,052	+1.2%
Vernon County	31,443	+2.4%
Trempealeau County	31,171	+1.1%
Door County	30,616	+1.6%
Lincoln County	28,403	−0.1%
Juneau County	26,649	−0.5%
Waushara County	25,223	+2.8%
Iowa County	23,951	+1.0%

Elsewhere on the site

Rankings this appears in

No. 4 Counties in Wisconsin by foreign-born share
No. 4 Counties in Wisconsin by Hispanic or Latino share
No. 11 Counties in Wisconsin by median household income
No. 12 Counties in Wisconsin by poverty rate
No. 18 Counties in Wisconsin by median rent
No. 33 Counties in Wisconsin by per capita income

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

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