Map and Location Resources
North America
- Visualization of North American Colonization (1750-2008) – This is a great visualization of the colonization and occupation of North America from 1750-2008 by Non-Native Americans.
- US Historical County/State Boundaries Timeline – Animated map of US county boundaries by year
- David Rumsey – Cartography Collection –
States Specific County Lines by Date
The links below are very helpful as they show exactly where counties where by time period. This becomes very important when doing research from the early colonies through the middle of the 19th century.
- Counties of Ohio – This page shows when counties in OH were created and from which other counties.
- Counties of Kentucky – This page shows when counties in Ky were created and from which other counties.
- Counties of Maryland – This page shows when counties in MD where created and from which other counties.
- Counties of North Carolina – This page shows when counties in NC were created and from which other counties.
- Counties of Pennsylvania – This page shows when counties in PA were created and from which other counties.
- Counties of South Carolina – This page shows when counties in SC were created and from which other counties.
- Counties of Virginia – This page shows when counties in VA were created and from which other counties.
- Counties of West Virginia – This page shows when counties in WV were created and from which other counties.