Decade built · 1820s

Built in the 1820s

Monroe served until 1825 and John Quincy Adams followed. The Missouri Compromise of 1820 drew a line across the territories for slavery, and the Monroe Doctrine of 1823 warned Europe off the hemisphere. The Erie Canal opened in 1825 and the first American railroads were chartered at the end of the decade.

288 places on the National Register have a construction year in the 1820s on record. They stand in 30 states and territories. 15 are National Historic Landmarks.

← 1810s · 1830s →

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.

288

Listings

States

National Historic Landmarks

Historic districts

By state

New York 43 Massachusetts 39 Maine 20North Carolina 19Tennessee 17Ohio 16Kentucky 14Pennsylvania 13Maryland 8Mississippi 8New Hampshire 8New Jersey 8South Carolina 8Virginia 8Louisiana 7Rhode Island 7Connecticut 6Vermont 6Florida 5Georgia 4Michigan 4Wisconsin 4Alabama 3District of Columbia 3West Virginia 3Indiana 2Puerto Rico 2Alaska 1California 1New Mexico 1

Longest-lived styles of the decade

Style	In the 1820s	Dated examples, all decades	Years in use
Neoclassical	4	1023	1680 to 2016
Greek Revival	39	1093	1660 to 1987
Georgian	4	192	1666 to 1986
Gothic Revival	11	753	1702 to 2017
Colonial Revival	6	797	1701 to 1998
Federal	102	599	1700 to 1996
Italianate	4	783	1712 to 1948
Queen Anne style	2	1039	1753 to 1989

Style labels come from Wikidata. A style is ranked by the span between the earliest and latest dated listing that carries it, across the whole register, and only styles with two or more listings in this decade are shown. Data refreshed September 19, 2026.