Marquette County GIS Maps
Marquette County, Wisconsin, has 15,592 residents across 21,437 parcels and covers 455.7 square miles. The population grew 1.2% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Marquette County is 55077.
Montello is the county's largest population center. Marquette County also includes 6 zip codes, 5 public school districts and 35 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.
Marquette County Trends
- Population
- 15,592▴
- Median Home Value
- $201,100▴
- K-12 Enrollment
- 5,644▾
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.
Marquette 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.
Marquette County Parcels
Marquette County has 21,437 mapped parcels covering 289,887 acres. The median assessed value is $78,400. The median lot size is 8.57 acres. 8,957 parcels are 10 acres or larger. The records carry 11,392 distinct owner names. Owner names are on nearly every parcel. Mailing addresses reach 91.0%. Site addresses reach 51.3%. Browse the interactive Marquette County Parcel viewer here.
Marquette County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 21,437 | 100% |
| Owner name | 21,431 | 99.9% |
| Owner mailing address | 19,509 | 91.0% |
| Site address | 11,004 | 51.3% |
| Land use code | 19,770 | 92.2% |
| Land use description | 0 | 0% |
| Assessed value | 19,773 | 92.2% |
| Land value | 19,773 | 92.2% |
| Improvement value | 20,142 | 94.0% |
| Acreage | 18,621 | 86.9% |
| Parcel boundary | 21,437 | 100% |
| Download all Marquette County parcels. | ||
Field coverage measured across all Marquette County parcel records.
Marquette County Population
Marquette County had 15,592 residents in 2020. That was 1.2% higher than in 2010. Marquette County had 240 fewer people in 2020 than it did in 2000, which points to a long-term population decline. The county is fairly spread out, with about 34 people per square mile. Some of the county's most populated postal areas include Montello, Oxford and Westfield.
Population Trend in Marquette County WI
Marquette County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Marquette County Zip Codes
Marquette County has 6 zip codes. Some of the county's most populated zip codes include Montello (53949), Oxford (53952) and Westfield (53964). Montello is the largest zip by population, with about 6,084 residents or 39% of the county total. Together, the three largest zips account for about 89% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Marquette County WI
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 53949 | Montello | 6,084 | ▴ 1.2% |
| 53952 | Oxford | 4,276 | ▾ -2.3% |
| 53964 | Westfield | 3,514 | ▾ -2.5% |
| 54960 | Neshkoro | 2,729 | ▾ -2.5% |
| 53930 | Endeavor | 1,235 | ▾ -3.9% |
| Download all zip code data | |||
Marquette County Zip Code populations and trends per most recent census data.
Marquette County Demographics
Marquette County has a median age of 50.5, which makes the county a little older than Wisconsin overall. About 19% of residents are under 18, while 25.9% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 65 and over at about 25.9% of the population, which points to an older population profile. About 15.2% 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 Marquette County WI
Median Age
50.5
Under 18
19%
Age 65+
25.9%
Bachelor's+
15.2%
Marquette County School Districts
Marquette County is served by 5 public school districts with 5,644 students enrolled in 2024. The largest districts on the county map are Portage Community, Wisconsin Dells and Westfield. Those three districts account for about 85% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Marquette County WI
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Portage Community School District | 1,956 | 34.7% | ▾ -3.8% |
| Wisconsin Dells School District | 1,768 | 31.3% | ▾ -3.2% |
| Westfield School District | 1,064 | 18.9% | ▴ 3% |
| Montello School District | 571 | 10.1% | ▾ -0.9% |
| Princeton School District | 285 | 5% | ▾ -8.1% |
| Download all school district data | |||
Marquette County school district enrollment and trends per most recent NCES reporting data.
Marquette County Housing & Real Estate
Marquette County has a median home value of $201,100 and a median gross rent of $800. About 81% 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 $311,200 and homes spent about 78 days on the market.
Marquette County Housing Mix
Marquette County housing mix: owner, renter and vacant units.
Marquette County Housing Trends
Marquette County median home value and rent trend (last 5 years).
Businesses in Marquette County, WI
Marquette County has 728 business listings across 245 categories. The largest categories in Marquette County business listings are Lake (33, 4.5%), Campgrounds & RV Parks (29, 4.0%), and Churches & Religious Organizations (24, 3.3%). The full Marquette County business listings dataset includes names, categories, addresses and contact details where available. Marquette County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Marquette County, WI
| Category | Businesses | Share |
|---|---|---|
| Lake | 33 | 4.5% |
| Campgrounds & RV Parks | 29 | 4.0% |
| Churches & Religious Organizations | 24 | 3.3% |
| Gas Stations | 22 | 3.0% |
| Auto Repair | 18 | 2.5% |
| Bars & Nightlife | 18 | 2.5% |
| Restaurants | 15 | 2.1% |
| Farm | 15 | 2.1% |
| Public And Government Association | 12 | 1.6% |
| Parks & Recreation | 11 | 1.5% |
Marquette County Business Listings
| Business | Category | City |
|---|---|---|
| Bent Beam Barn | Accommodation | Briggsville |
| Addiction Treatment Westfield | Addiction Rehabilitation Center | Westfield |
| Foxtail Gentleman's Club | Adult Entertainment | Montello |
| Marquette County Tribune | Advertising Agency | Montello |
| United Cooperative | Agricultural Cooperatives | Westfield |
| Riesterer & Schnell | Agricultural Service | Westfield |
| Village Inn | American Restaurants | Westfield |
| SoL Criations Farm Sanctuary | Animal Rescue Service | Endeavor |
| Little Orphans Animal Rescue, Inc. | Animal Shelters | Montello |
| Vintage Betsy | Antique Store | Oxford |
| Download Marquette County business listings | ||
Marquette County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Marquette County Basemaps
Marquette 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 Marquette County Data Package
This page shows a preview of what's included in the Marquette 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 Marquette County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.