ZIP Codes of Trempealeau County, WI

Population & People
Population & People
Total Population
35,578
Household Income
Household Income
Median Income
$77,838
Housing
Housing
Total Housing Units
15,235
Business & Economy
Business & Economy
Total Businesses
697
Employment
Employment
Employment Rate
65.90%
Education
Education
Bachelor's Degree+
21.79%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 12 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:12 ZIP Codes (11 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:353 / 534 / 608 / 715
Timezone:Central (GMT -06:00)
Local Time:2:14:21 PM
Population:35,578 [See All]
FIPS:55121
Land Area:1,021 sq mi
Water Area:9 sq mi
Coordinates:44.3271, -91.3614
Quick Link:
https://www.zip-codes.com/county/wi-trempealeau.asp
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Wisconsin's #41 most populous county
35,578 residents across 12 ZIPs — #41 of 73 Wisconsin counties.

Standout ZIPs in this County


Most Populous
Arcadia · 5,915 people
16.6% of county total
Highest Income
Galesville · $95,549 median
1.2× county average
Largest Land Area
Arcadia · 161.3 sq mi
Spans the most ground
Fastest Growth
Eleva · 23.8% (10-yr)
3,057 → 3,784 residents
Most Educated
Eleva · 30.6% bachelor's+
742 of 2,428 adults 25+

Things worth knowing about Trempealeau County


35,578 residents live across 12 ZIPs covering 1,021 sq mi, served by 12 distinct USPS-recognized cities.

Population moved from 33,555 to 35,578 from 2014 to 2024 — a +6.0% change. 8 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 54630 (Galesville, $95,549 median) and poorest ZIP 54625 (Dodge, $53,157) are 8.8 miles apart — a 1.8× income gap across local geography.

Median home values vary 1.6× across this county — from $179,300 in 54773 (Whitehall) to $290,400 in 54738 (Eleva).

Density varies across the county — from 23 people/sq mi in 54747 (Independence) to 59 in 54661 (Trempealeau).

Educational attainment ranges from 8.1% bachelor's+ in 54625 (Dodge) to 30.6% in 54738 (Eleva) — the breadth of educational profiles across the area.

Within Wisconsin, this is the #41 most populous of 73 counties and ranks #28 for median household income with the #16 fastest decade growth .

Weighted by population, the typical household earns about $79,358 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.8% of adults age 25+ hold a bachelor's degree or higher (5,144 of 23,612 reporting).

11 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Trempealeau County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
1,021
square miles
Avg density
34.9
people per sq mi
Population
35,578
across 12 ZIPs
Arcadia
161.3 sq mi
5,915 residents
Osseo
159.5 sq mi
4,577 residents
Independence
115.6 sq mi
2,690 residents

All ZIP Codes in Trempealeau County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
54612ArcadiaStandard5,915$77,647161.313.5%
54758OsseoStandard4,577$67,930159.5-2.8%
54630GalesvilleStandard4,261$95,54985.27.0%
54661TrempealeauStandard3,806$79,72064.712.0%
54738ElevaStandard3,784$95,179100.623.8%
54773WhitehallStandard3,542$72,23270.94.4%
54747IndependenceStandard2,690$70,820115.62.8%
54616BlairStandard2,443$72,22297.4-8.1%
54770StrumStandard2,033$83,63674.5-5.7%
54627EttrickStandard2,020$77,21281.56.3%
54625DodgeStandard317$53,1579.322.4%
54760Pigeon FallsPO Box190$88,7500.0-10.0%

Adjacent & Nearby Counties