Historical County Boundaries

Newberry Library (Chicago) has put their Atlas of Historical County Boundaries online. What a wonderful resource for genealogists! Check out changes in boundaries to make sure you're looking for information in the correct county. Also, don't assume your ancestor's records will all be in the same county just because he/she never moved. It's just possible the county did!!

Be sure to bookmark this site in your favorites so you can return to it whenever you need it.