Below is a list of links to State Historic Preservation Office (SHPO) websites.

National Directory
National Conference of State Historic Preservation Officers

Alabama
Alabama Historical Commission

Alaska
Alaska DNR, Office of History & Archaeology

American Samoa
AS Government/Historic Preservation Office

Arizona
Arizona State Historic Preservation Office

Arkansas
Department of Arkansas Heritage

California
Office of Historic Preservation

Colorado
Colorado Historical Society

Connecticut
Connecticut Department of Economic and Community Development

Delaware
Division of Historical and Cultural Affairs

District of Columbia
Historic Preservation Office

Florida
Division of Historical Resources, Department of State

Georgia
Historic Preservation Division/DNR

Guam
Guam Historic Preservation Office

Hawaii
Department of Land & Natural Resources

Idaho
Idaho State Historical Society

Illinois
Illinois Historic Preservation Agency

Indiana
Division of Historic Preservation and Archaeology

Iowa
State Historical Society of Iowa

Kansas
Kansas State Historical Society

Kentucky
Kentucky Heritage Council

Louisiana
Department of Culture, Recreation & Tourism

Maine
Maine Historic Preservation Commission

Maryland
Maryland Historical Trust

Massachusetts
Massachusetts Historical Commission

Michigan
State Historic Preservation Office

Minnesota
Minnesota Historical Society

Mississippi
Division of Historic Preservation

Missouri
State Historic Preservation Office

Montana
State Historic Preservation Office

Nebraska
Nebraska State Historical Society

Nevada
Historic Preservation Office

New Hampshire
New Hampshire Division of Historical Resources

New Jersey
Department of Environmental Protection

New Mexico
Historic Preservation Division

New York
State Historic Preservation Office

North Carolina
Division of Archives & History

North Dakota
State Historical Society of North Dakota

Ohio
Ohio Historic Preservation Office

Oklahoma
State Historic Preservation Office

Oregon
State Historic Preservation Office

Pennsylvania
Pennsylvania Historical and Museum Commission

Puerto Rico, Commonwealth of
State Historic Preservation Office

Rhode Island
Rhode Island Historic Preservation & Heritage Commission

South Carolina
Department of Archives & History

South Dakota
State Historic Preservation Office

Tennessee
Tennessee Historical Commission

Texas
Texas Historical Commission

Utah
Utah State History

Vermont
Vermont Division for Historic Preservation

Virginia
Department of Historic Resources

Washington
Office of Archeology & Historic Preservation

West Virginia
Historic Preservation Office

Wisconsin
Wisconsin Historical Society

Wyoming
Wyoming State Historic Preservation Office