Trempealeau County GIS Maps
Trempealeau County, Wisconsin, has 30,760 residents across 31,885 parcels and covers 733 square miles. The population grew 6.7% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Trempealeau County is 55121.
Arcadia is the county's largest population center. Trempealeau County also includes 11 zip codes, 8 public school districts and 45 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Trempealeau County Trends
- Population
- 30,760▴
- Median Home Value
- $203,300▴
- K-12 Enrollment
- 6,021▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Trempealeau County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Trempealeau County Parcels
Trempealeau County has 31,885 mapped parcels covering 470,988 acres. The median assessed value is $46,100. The median lot size is 4.77 acres. 13,707 parcels are 10 acres or larger. The records carry 12,722 distinct owner names. Owner names, mailing addresses and lot sizes are on nearly every parcel. Assessed values reach 86.9%. Browse the interactive Trempealeau County Parcel viewer here.
Trempealeau County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 31,885 | 100% |
| Owner name | 31,878 | 99.9% |
| Owner mailing address | 31,881 | 99.9% |
| Site address | 13,373 | 41.9% |
| Land use code | 27,829 | 87.3% |
| Land use description | 0 | 0% |
| Assessed value | 27,722 | 86.9% |
| Land value | 31,881 | 99.9% |
| Improvement value | 31,881 | 99.9% |
| Acreage | 31,822 | 99.8% |
| Parcel boundary | 31,885 | 100% |
| Download all Trempealeau County parcels. | ||
Field coverage measured across all Trempealeau County parcel records.
Trempealeau County Population
Trempealeau County had 30,760 residents in 2020. That was 6.7% higher than in 2010. Trempealeau County added 3,750 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 42 people per square mile. Some of the county's most populated postal areas include Arcadia, Osseo and Galesville.
Population Trend in Trempealeau County WI
Trempealeau County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Trempealeau County Zip Codes
Trempealeau County has 11 zip codes. Some of the county's most populated zip codes include Arcadia (54612), Osseo (54758) and Galesville (54630). Arcadia is the largest zip by population, with about 5,816 residents or 19% of the county total. Together, the three largest zips account for about 48% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Trempealeau County WI
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 54612 | Arcadia | 5,816 | ▴ 12.9% |
| 54758 | Osseo | 4,759 | ▴ 2.9% |
| 54630 | Galesville | 4,090 | ▴ 8.5% |
| 54661 | Trempealeau | 3,852 | ▴ 12.8% |
| 54773 | Whitehall | 3,312 | ▾ -0.7% |
| Download all zip code data | |||
Trempealeau County Zip Code populations and trends per most recent census data.
Trempealeau County Demographics
Trempealeau County has a median age of 39.8, which makes the county a little younger than Wisconsin overall. About 26.7% of residents are under 18, while 18.3% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 27.8% of the population, which points to a solid working-age base. About 20.2% of adults have a bachelor's degree or higher, above the statewide figure of 32.8%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Trempealeau County WI
Median Age
39.8
Under 18
26.7%
Age 65+
18.3%
Bachelor's+
20.2%
Trempealeau County School Districts
Trempealeau County is served by 8 public school districts with 6,021 students enrolled in 2024. The largest districts on the county map are Galesville-Ettrick-Trempealeau, Arcadia and Whitehall. Those three districts account for about 57% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.
Largest School Districts by Enrollment in Trempealeau County WI
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Galesville-Ettrick-Trempealeau School District | 1,393 | 23.1% | ▴ 1.8% |
| Arcadia School District | 1,303 | 21.6% | ▴ 0.8% |
| Whitehall School District | 760 | 12.6% | ▴ 0.3% |
| Osseo-Fairchild School District | 747 | 12.4% | ▾ -2.6% |
| Eleva-Strum School District | 664 | 11% | ▴ 8.3% |
| Download all school district data | |||
Trempealeau County school district enrollment and trends per most recent NCES reporting data.
Trempealeau County Housing & Real Estate
Trempealeau County has a median home value of $203,300 and a median gross rent of $887. About 74% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Wisconsin median, while rents come in below the state average. In March 2026, the median listing price was $265,000 and homes spent about 59 days on the market.
Trempealeau County Housing Mix
Trempealeau County housing mix: owner, renter and vacant units.
Trempealeau County Housing Trends
Trempealeau County median home value and rent trend (last 5 years).
Businesses in Trempealeau County, WI
Trempealeau County has 1,227 business listings across 333 categories. The largest categories in Trempealeau County business listings are Churches & Religious Organizations (51, 4.2%), Auto Repair (31, 2.5%), and Gas Stations (30, 2.4%). The full Trempealeau County business listings dataset includes names, categories, addresses and contact details where available. Trempealeau County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Trempealeau County, WI
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 51 | 4.2% |
| Auto Repair | 31 | 2.5% |
| Gas Stations | 30 | 2.4% |
| Bar And Grill Restaurant | 25 | 2.0% |
| Bars & Nightlife | 23 | 1.9% |
| Farm | 20 | 1.6% |
| Elementary School | 19 | 1.5% |
| Beauty Salons | 19 | 1.5% |
| Convenience Stores | 18 | 1.5% |
| Contractors | 17 | 1.4% |
Trempealeau County Business Listings
| Business | Category | City |
|---|---|---|
| Stetzer Accounting | Accountant | Trempealeau |
| Rhude's Retreat | Active Life | Arcadia |
| Insurance Marketing Partners | Advertising Agency | Strum |
| Allied Cooperative Shop | Agricultural Cooperatives | Gale |
| D&D Farm Supply | Agricultural Service | Arcadia |
| Associated Milk Producers | Agriculture | Blair |
| Brion Memorial Airport | Airport | Strum |
| Rich's Home Repairs | Altering And Remodeling Contractor | Trempealeau |
| Osseo Family Restaurant | Osseo WI | American Restaurants | Osseo |
| Best Friends Pet Clinic LLC | Animal Hospital | Galesville |
| Download Trempealeau County business listings | ||
Trempealeau County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Trempealeau County Basemaps
Trempealeau County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Trempealeau County Data Package
This page shows a preview of what's included in the Trempealeau County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Trempealeau County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.