Mercer County is a district of Missouri.
Boundaries: United States Census Bureau, MAF/TIGER Database (https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html) via geoBoundaries, public domain
| Township of Harrison | no seat recorded | |
| Township of Lindley | no seat recorded | |
| Township of Madison | no seat recorded | |
| Township of Marion | no seat recorded | |
| Township of Medicine | no seat recorded | |
| Township of Morgan | Princeton | |
| Township of Ravanna | no seat recorded | |
| Township of Somerset | no seat recorded | |
| Township of Washington | no seat recorded |
Nothing has been written about Mercer County here, and neither Wikipedia nor Wikivoyage has an article we could draw one from. If you know the place, that makes you a better source than anything we have. Tell us what is worth knowing and where you got it.
We show Princeton as the capital of Mercer County. If that is wrong, tell us what it should be and where you read it.
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