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Business software planning

Washington County, Wisconsin

Use county population and geographic scope to frame a local business software brief. Estimate the size of the area you mean, then define the customers, data sources and workflow the software must support.

County FIPS55131Five-digit Census identifier
Population139,238July 1, 2025 estimate
Land area430.64 mi²2025 Gazetteer
Population per land mi²323.33Calculated from the cited population and land area

Identify the right place

Washington County is a county or county equivalent in Wisconsin. Its five-digit FIPS code is 55131; preserve the leading zero when storing county codes as text. The Gazetteer lists 5.02 square miles of water and a representative point at 43.391156, -88.232917. That point identifies the geography; it is not a street address or a site boundary.

Open this county in Census data · Download this county as JSON

Business software planning checklist

  1. Define the exact service area and customer group.
  2. Name the systems and public sources the workflow depends on.
  3. Agree a measurable outcome and a small initial scope.

A geographic reference does not establish an office, a client engagement or a delivery commitment in this county.

Sources and interpretation

Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.

Population is an estimate, not a live count. Gazetteer land and water measures describe the geographic area; they do not measure service availability, households, businesses or market demand. Match the FIPS code and source vintage when joining another dataset.

More county references in Wisconsin

Browse all 72 county equivalents in Wisconsin