Decade built · 1900s

Built in the 1900s

McKinley was assassinated in 1901 and Theodore Roosevelt served until 1909. The San Francisco earthquake and fire destroyed much of that city in 1906, the same year the Antiquities Act gave the president power to set aside national monuments. The Wright brothers flew in 1903 and Ford introduced the Model T in 1908.

2,349 places on the National Register have a construction year in the 1900s on record. They stand in 53 states and territories. 25 are National Historic Landmarks.

← 1890s · 1910s →

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.

2,349

Listings

States

National Historic Landmarks

Historic districts

By state

Wisconsin 156 Washington 139 Utah 134 New York 102 South Dakota 102 Massachusetts 94 Oregon 94 Kansas 83 California 78 Oklahoma 77 Iowa 72 Ohio 66 North Carolina 62 Tennessee 60 Minnesota 57 Montana 56 Pennsylvania 55 Louisiana 54 Colorado 52 Mississippi 52 Nebraska 51 Idaho 50 Michigan 48 New Mexico 44 Illinois 43 Georgia 37 Kentucky 36 Indiana 32 Maine 30 District of Columbia 27 Missouri 27 Alabama 24 Arizona 23 Texas 20Arkansas 19Florida 19South Carolina 19New Jersey 18Puerto Rico 18Vermont 15Connecticut 14Virginia 13New Hampshire 11Maryland 10West Virginia 10Rhode Island 9Alaska 8North Dakota 8Nevada 7Delaware 5Hawaii 5Wyoming 3American Samoa 1

Longest-lived styles of the decade

Style	In the 1900s	Dated examples, all decades	Years in use
Romanesque	3	22	1101 to 1932
Neoclassical	238	1023	1680 to 2016
Spanish Colonial Revival	7	144	1680 to 2014
Greek Revival	6	1093	1660 to 1987
Vernacular	14	182	1662 to 1984
Georgian	6	192	1666 to 1986
Gothic Revival	76	753	1702 to 2017
Renaissance Revival	83	482	1712 to 2015

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.