| County Quick Reference | |
| County Seat: Lawrenceburg | County Name: Named for Henry Dearborn, Secretary of War. | 
| Boundary Changes (click on the name of a change to see more information) | |||||||||||||||
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| Background (general information on the area to put it in the context of history) | 
Dearborn County was formed on 07 March 1803 by Proclamation erecting new county of Dearborne [click here for more information]. The county's boundaries would change two times before statehood.
The following map shows the original size of the county at its founding (in red with yellow border) superimposed on a modern map
.|  Dearborn County in 1803 | 
| Census (click on a year below to view information on the population of the area) | 
| Date | Population | Change | 
| 1810 | 7,310 | --- | 
| 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) | 
| Related Content (the links below contain information related to this area) | 
| More Like This (HistoryKat content similar to this page) |