Public Tool

What is my Ecoregion?

Enter a U.S. address, choose the state, and get the matched latitude, longitude, and EPA terrestrial ecoregion levels.

Result

Submit an address to run the lookup.

Texas reference map

This EPA map shows the state’s nested Level III and Level IV ecoregions—the same classification system used by the lookup above.

This page does not use a database, does not write to browser storage, and does not intentionally log submitted addresses.

What leaves the page: The address is sent to Esri's public geocoder to convert it into a coordinate.
What the EPA receives: Only the latitude and longitude are sent to the EPA ecoregion map service to identify the matching polygon.
What Labs saves: Nothing from your submission. Results are shown in your browser and disappear when you leave or refresh the page.

Addresses are sensitive. Use a nearby intersection or landmark if exact-house precision is not needed.

The lookup uses public map services and returns EPA ecoregion attributes when the coordinate intersects a mapped polygon.

Geocoding No storage requested

Address to coordinate

The request includes forStorage=false. The selected state is included to reduce ambiguous address matches.

Ecoregions EPA / ArcGIS

Coordinate to ecoregion

The coordinate is checked against EPA terrestrial ecoregion polygons, with Level IV used first when available.

EPA ecoregions are nested from broad continental patterns to finer local ecological areas.

Broadest Level I

The largest ecological zones, shaped by broad patterns of climate, landforms, vegetation, and ecosystems.

Broad Level II

Subdivisions of Level I that narrow the map by more specific climate, geology, terrain, and vegetation patterns.

Regional Level III

The scale that is often easiest to recognize by name, describing a meaningful regional ecological landscape.

Most Detailed Level IV

The finest mapped subdivision, reflecting more local differences in soils, terrain, vegetation, and land use.