Erie County Ohio (Historic Districts) has 8 places on the National Register of Historic Places including 5 places of Statewide significance. Significant places include Kelleys Island Historic District (Boundary Increase), Kelleys Island South Shore District, Milan Historic District, Mitchell Historic District and Water Street Commercial Buildings.
Prehistoric cultural affiliation(s) include Protohistoric, Archaic and Woodland dating back to 8999 BC.
Some of the country's most noteable architects helped create the Erie County places including Zenas King. Prominent architectural styles found in Erie Country are Italianate, Greek Revival and Late Victorian.