What this tracks
This dataset maps the geographic boundaries of all 115 counties in Missouri based on 2009 U.S. Census data.
Why it matters to you
Knowing which county you live in determines your property taxes, court jurisdiction, voting districts, and which county services you can access. If you’re starting a business in Missouri, this data helps you understand county-level regulations and tax rates that vary across jurisdictions. County boundaries also determine which sheriff’s department responds to emergencies and which county health department oversees local regulations.
How to read this data
name — The county name, like “Howard” for Howard County. namelsad — The full official name including “County,” such as “Howard County.” aland — The total land area in square meters (Howard County has 1,201,363,235 square meters of land). centroid — The geographic center point of each county, showing latitude and longitude coordinates that help locate the county on a map.
Try it yourself
Search for your address or city name to find which Missouri county you’re in, then use the name field to identify your county government’s website and services available to you.