Mercer County
Ecoregion: Southern Great Lakes forests
Temperate Broadleaf & Mixed Forests. Ecoregions: RESOLVE Ecoregions 2017 (Dinerstein et al. 2017) (opens in a new tab), CC BY 4.0 (opens in a new tab)
Watersheds: St. Marys and Upper Wabash
Land cover: farmland 82%, developed 12%
Elevation: 680 to 1,080 ft, mostly around 870 ft (207–328 m)
Land cover as shares of the land area. Land cover: USGS Annual NLCD, 2025 (opens in a new tab). Elevation: USGS 3D Elevation Program (opens in a new tab)
Warmth so far: Not available yet.
- species with a result
- 8
- records, 2016 to 2025
- 1,163
Mercer County at a glance
Darker weeks have more of a group's species recorded. Shows when people recorded them, not how common they are.
The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low.
Every species recorded here
223 species
Birds 2
Dragonflies and damselflies 6
Within its mapped range 215
No qualifying county records yet, but its published range map covers the county.
Showing 48 of 223
More lists for Mercer County
Missing records do not mean a species is absent. Back to the Ohio map