Jersey County is a district of Illinois.
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 Elsah | no seat recorded | |
| Township of English | no seat recorded | |
| Township of Fidelity | no seat recorded | |
| Township of Jersey | Jerseyville | |
| Township of Mississippi | no seat recorded | |
| Township of Otter Creek | no seat recorded | |
| Township of Piasa | no seat recorded | |
| Township of Quarry | no seat recorded | |
| Township of Richwood | no seat recorded | |
| Township of Rosedale | no seat recorded | |
| Township of Ruyle | no seat recorded |
Nothing has been written about Jersey 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 Jerseyville as the capital of Jersey County. If that is wrong, tell us what it should be and where you read it.
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