Clark County GIS Maps
Clark County, Wisconsin, has 34,659 residents across 35,563 parcels and covers 1,209.7 square miles. The population declined 0.1% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Clark County is 55019.
Neillsville is the county's largest population center. Clark County also includes 14 zip codes, 14 public school districts and 75 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.
Clark County Trends
- Population
- 34,659▾
- Median Home Value
- $163,800▴
- K-12 Enrollment
- 11,631▾
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.
Clark 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.
Clark County Parcels
Clark County has 35,563 mapped parcels covering 774,684 acres. The median assessed value is $40,000. The median lot size is 14.00 acres. 19,086 parcels are 10 acres or larger. The records carry 15,437 distinct owner names. Owner names, mailing addresses and lot sizes are on nearly every parcel. Assessed values reach 92.0%. Browse the interactive Clark County Parcel viewer here.
Clark County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 35,563 | 100% |
| Owner name | 35,552 | 99.9% |
| Owner mailing address | 35,395 | 99.5% |
| Site address | 16,997 | 47.8% |
| Land use code | 30,765 | 86.5% |
| Land use description | 0 | 0% |
| Assessed value | 32,706 | 92.0% |
| Land value | 32,706 | 92.0% |
| Improvement value | 32,706 | 92.0% |
| Acreage | 35,554 | 99.9% |
| Parcel boundary | 35,563 | 100% |
| Download all Clark County parcels. | ||
Field coverage measured across all Clark County parcel records.
Clark County Population
Clark County had 34,659 residents in 2020. That was 0.1% lower than in 2010. Clark County added 1,102 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 29 people per square mile. Some of the county's most populated postal areas include Neillsville, Thorp and Spencer.
Population Trend in Clark County WI
Clark County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Clark County Zip Codes
Clark County has 14 zip codes. Some of the county's most populated zip codes include Neillsville (54456), Thorp (54771) and Spencer (54479). Neillsville is the largest zip by population, with about 5,904 residents or 17% of the county total. Together, the three largest zips account for about 41% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Clark County WI
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 54456 | Neillsville | 5,904 | ▾ -3% |
| 54771 | Thorp | 4,421 | ▴ 3.1% |
| 54479 | Spencer | 3,838 | ▾ -6.8% |
| 54437 | Greenwood | 3,265 | ▴ 6.1% |
| 54446 | Loyal | 2,990 | ▾ -4.3% |
| Download all zip code data | |||
Clark County Zip Code populations and trends per most recent census data.
Clark County Demographics
Clark County has a median age of 37, which makes the county a little younger than Wisconsin overall. About 29.8% of residents are under 18, while 17% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is Under 18 at about 29.8% of the population, which suggests the county has a notable share of children and family households. About 13.4% 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 Clark County WI
Median Age
37
Under 18
29.8%
Age 65+
17%
Bachelor's+
13.4%
Clark County School Districts
Clark County is served by 14 public school districts with 11,631 students enrolled in 2024. The largest districts on the county map are Marshfield, Stanley-Boyd Area and Colby. Those three districts account for about 47% 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 Clark County WI
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Marshfield School District | 3,553 | 30.5% | ▾ -3.5% |
| Stanley-Boyd Area School District | 1,069 | 9.2% | ▴ 0.4% |
| Colby School District | 901 | 7.7% | ▾ -1% |
| Neillsville School District | 825 | 7.1% | ▴ 0.4% |
| Abbotsford School District | 788 | 6.8% | ▾ -2.4% |
| Download all school district data | |||
Clark County school district enrollment and trends per most recent NCES reporting data.
Clark County Housing & Real Estate
Clark County has a median home value of $163,800 and a median gross rent of $786. About 78% 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 $239,500 and homes spent about 87 days on the market.
Clark County Housing Mix
Clark County housing mix: owner, renter and vacant units.
Clark County Housing Trends
Clark County median home value and rent trend (last 5 years).
Businesses in Clark County, WI
Clark County has 1,306 business listings across 345 categories. The largest categories in Clark County business listings are Churches & Religious Organizations (46, 3.5%), Bars & Nightlife (36, 2.8%), and Auto Repair (31, 2.4%). The full Clark County business listings dataset includes names, categories, addresses and contact details where available. Clark County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Clark County, WI
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 46 | 3.5% |
| Bars & Nightlife | 36 | 2.8% |
| Auto Repair | 31 | 2.4% |
| Gas Stations | 25 | 1.9% |
| Public And Government Association | 23 | 1.8% |
| Bar And Grill Restaurant | 22 | 1.7% |
| Convenience Stores | 22 | 1.7% |
| Beauty Salons | 21 | 1.6% |
| Parks & Recreation | 19 | 1.5% |
| Landmark And Historical Building | 18 | 1.4% |
Clark County Business Listings
| Business | Category | City |
|---|---|---|
| Green Vista Apartments | Accommodation | Abbotsford |
| Dan C. Becker | Accountant | Thorp |
| FastLane power sports LLC | Active Life | Granton |
| That’s The Point Acupuncture LLC | Acupuncture | Thorp |
| Quality Roasting | Agricultural Service | Owen |
| Greenwood Silo | Agriculture | Greenwood |
| Neillsville Municipal Airport | Airport | Clark County |
| Schmitty's On Main | American Restaurants | Neillsville |
| Hoof and Paw Veterinary Care LLC | Animal Hospital | Loyal |
| Clark County Humane Society, Wisconsin | Animal Shelters | Neillsville |
| Download Clark County business listings | ||
Clark County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Clark County Basemaps
Clark 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 Clark County Data Package
This page shows a preview of what's included in the Clark 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 Clark County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.