| County Quick Reference | |
| County Seat: Warren | County Name: Named for Jonathan Trumbull, Governor of Connecticut, who owned land in the area | 
| Boundary Changes (click on the name of a change to see more information) | ||
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| Background (general information on the county to put it in the context of history) | 
Trumbull County was created out of Jefferson and Wayne Counties. The pictured borders were in place until 28 February 1803. The map below shows the historical borders on top of a current map.
|  Trumbull County in 1800 | 
| Census (click on a year below to view information on the population of the Territory) | 
| Date | Population | Change | 
| 1800 | 1,313 | --- | 
| Bibliography (click on the title of the following works to learn more about life in the area;for those items not available online, check with your local library for availability) | 
| Referenced Items (content on HistoryKat that references this area) |