Washington County GIS Maps
Washington County, Wisconsin, has 136,761 residents across 63,144 parcels and covers 430.6 square miles. The population grew 3.7% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Washington County is 55131.
West Bend is the county's largest population center. Washington County also includes 11 zip codes, 5 public school districts and 39 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.
Washington County Trends
- Population
- 136,761▴
- Median Home Value
- $316,200▴
- K-12 Enrollment
- 17,345▾
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.
Washington 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.
Washington County Parcels
Washington County has 63,144 mapped parcels. The median assessed value is $306,500. The median lot size is 0.50 acres. 7,744 parcels are 10 acres or larger. The records carry 51,365 distinct owner names. Owner names, mailing addresses and lot sizes are on nearly every parcel. Site addresses reach 96.7%. Assessed values reach 94.3%. Browse the interactive Washington County Parcel viewer here.
Washington County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 63,144 | 100% |
| Owner name | 63,133 | 99.9% |
| Owner mailing address | 63,090 | 99.9% |
| Site address | 61,057 | 96.7% |
| Land use code | 59,516 | 94.3% |
| Land use description | 0 | 0% |
| Assessed value | 59,552 | 94.3% |
| Land value | 59,552 | 94.3% |
| Improvement value | 59,552 | 94.3% |
| Acreage | 63,027 | 99.8% |
| Parcel boundary | 63,144 | 100% |
| Download all Washington County parcels. | ||
Field coverage measured across all Washington County parcel records.
Washington County Population
Washington County had 136,761 residents in 2020. That was 3.7% higher than in 2010. Washington County added 19,268 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 318 people per square mile. Some of the county's most populated postal areas include West Bend, Hartford and West Bend.
Population Trend in Washington County WI
Washington County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Washington County Zip Codes
Washington County has 11 zip codes. Some of the county's most populated zip codes include West Bend (53095), Hartford (53027) and West Bend (53090). West Bend is the largest zip by population, with about 27,269 residents or 20% of the county total. Together, the three largest zips account for about 53% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Washington County WI
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 53095 | West Bend | 27,269 | ▴ 0.5% |
| 53027 | Hartford | 23,254 | ▴ 5.5% |
| 53090 | West Bend | 21,478 | ▾ -1.8% |
| 53022 | Germantown | 19,935 | ▴ 5.4% |
| 53037 | Jackson | 10,072 | ▴ 8.8% |
| Download all zip code data | |||
Washington County Zip Code populations and trends per most recent census data.
Washington County Demographics
Washington County has a median age of 43.5, which makes the county a little older than Wisconsin overall. About 21.3% of residents are under 18, while 19.2% 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 29.2% of the population, which points to a solid working-age base. About 34.8% 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 Washington County WI
Median Age
43.5
Under 18
21.3%
Age 65+
19.2%
Bachelor's+
34.8%
Washington County School Districts
Washington County is served by 5 public school districts with 17,345 students enrolled in 2024. The largest districts on the county map are West Bend, Germantown and Slinger. Those three districts account for about 72% 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 Washington County WI
| District | Enrollment | Share | Trend |
|---|---|---|---|
| West Bend School District | 5,365 | 30.9% | ▾ -4% |
| Germantown School District | 3,835 | 22.1% | ▴ 0.5% |
| Slinger School District | 3,234 | 18.6% | ▾ -1.1% |
| Cedarburg School District | 3,108 | 17.9% | ▴ 0.2% |
| Kewaskum School District | 1,803 | 10.4% | ▾ -1% |
| Download all school district data | |||
Washington County school district enrollment and trends per most recent NCES reporting data.
Washington County Housing & Real Estate
Washington County has a median home value of $316,200 and a median gross rent of $1,126. About 78% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Wisconsin median, while rents come in above the state average. In March 2026, the median listing price was $422,675 and homes spent about 40 days on the market.
Washington County Housing Mix
Washington County housing mix: owner, renter and vacant units.
Washington County Housing Trends
Washington County median home value and rent trend (last 5 years).
Businesses in Washington County, WI
Washington County has 5,708 business listings across 690 categories. The largest categories in Washington County business listings are Contractors (108, 1.9%), Churches & Religious Organizations (94, 1.6%), and Auto Repair (93, 1.6%). The full Washington County business listings dataset includes names, categories, addresses and contact details where available. Washington County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Washington County, WI
| Category | Businesses | Share |
|---|---|---|
| Contractors | 108 | 1.9% |
| Churches & Religious Organizations | 94 | 1.6% |
| Auto Repair | 93 | 1.6% |
| Parks & Recreation | 91 | 1.6% |
| Medical Center | 86 | 1.5% |
| Beauty Salons | 85 | 1.5% |
| Medical Offices | 84 | 1.5% |
| Real Estate Agents | 83 | 1.5% |
| Gas Stations | 81 | 1.4% |
| Hair Salons | 72 | 1.3% |
Washington County Business Listings
| Business | Category | City |
|---|---|---|
| Threshold Incorporated | Abuse And Addiction Treatment | West Bend |
| Ashbury Woods | Accommodation | Germantown |
| Glynn Accounting & Tax Service | Accountant | Slinger |
| Courtney Mac Fitness | Active Life | Hartford |
| Best Health Option Acupuncture & Wellness | Acupuncture | Germantown |
| Special Video | Adult Store | Allenton |
| Murphy Media Group | Advertising Agency | West Bend |
| United Cooperative | Agricultural Cooperatives | Hartford |
| Strupp Implement | Agricultural Service | Slinger |
| Family Dairies USA | Agriculture | Kewaskum |
| Download Washington County business listings | ||
Washington County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Washington County Basemaps
Washington 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 Washington County Data Package
This page shows a preview of what's included in the Washington 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 Washington County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.