Clay County GIS Map
Clay is one of the most repeated county names in the United States: there are 18 counties named Clay spread across 18 states. Each one is a different local government with its own boundary, population and flood maps, so the right GIS map depends on which state you mean.
That is also why a search for Clay GIS turns up several unrelated county systems — the name on its own does not tell you which state's mapping office you are after. Pick the state you need below.
Every county page opens an interactive GIS map of that county's official Census boundary, with FEMA flood zones, USGS elevation contours, land cover and school districts you can turn on, plus population, land area and ZIP code data.
Most people searching for Clay County mean Clay County, Missouri — the largest of them, with a population of about 258,122.
All 18 Clay Counties by state
Ordered by population, largest first.
- Clay CountyMissouri (MO) 258,122 397.7 sq mi
- Clay CountyFlorida (FL) 227,584 604.6 sq mi
- Clay CountyMinnesota (MN) 66,059 1,045.2 sq mi
- Clay CountyIndiana (IN) 26,409 357.6 sq mi
- Clay CountyKentucky (KY) 19,921 469.3 sq mi
- Clay CountyMississippi (MS) 18,383 410.1 sq mi
- Clay CountyIowa (IA) 16,461 567.2 sq mi
- Clay CountySouth Dakota (SD) 15,219 412 sq mi
- Clay CountyArkansas (AR) 14,280 639.2 sq mi
- Clay CountyAlabama (AL) 14,192 604 sq mi
- Clay CountyIllinois (IL) 13,052 468.4 sq mi
- Clay CountyNorth Carolina (NC) 11,610 215 sq mi
- Clay CountyTexas (TX) 10,495 1,088.8 sq mi
- Clay CountyKansas (KS) 8,048 645.3 sq mi
- Clay CountyWest Virginia (WV) 7,835 341.9 sq mi
- Clay CountyTennessee (TN) 7,670 236.5 sq mi
- Clay CountyNebraska (NE) 6,095 572.3 sq mi
- Clay CountyGeorgia (GA) 2,850 195.4 sq mi