Decade built · 1640s
Built in the 1640s
Civil war in England slowed emigration and left the colonies largely to themselves. Four New England colonies formed a confederation for defense in 1643. Maryland passed its Toleration Act in 1649.
6 places on the National Register have a construction year in the 1640s on record. They stand in 1 state.
Construction years come from Wikidata, matched on National Register reference number. Only plain four-digit years are counted, so a place recorded as circa or as a range is left out. Data refreshed September 19, 2026.
6
Listings
1
States
By state
Massachusetts 6
