Alabama

Alaska

Arizona
The Salt River Project (1911)

California
The East Bay (San Francisco) Regional Park District
The San Francisco Zoning Ordinance (1867)
Los Angeles County "Master Plan of Highways" (1940) and "Freeways for the Region" (1943)
The Napa County Agricultural Preserve (1968)
The Bay Conservation and Development Commission and Creation of the San Francisco Bay Plan (1965-69)
The Petaluma Plan (1971-72)

Colorado
The Denver Parks and Parkway System (1906+)
Speer Boulevard, Denver

Connecticut
The Nine Square Plan of New Haven (1639)

Delaware

District of Columbia
City of Euclid v. Ambler Realty Co., U.S. Supreme Court (1926)
Federal Housing Assistance "701" Program (Federal Housing Act of 1954)
The Plan of Washington, D.C. (1791)
The McMillan Commission Plan for Washington, D.C. (1901)
National Resources Planning Board (1933-43)
First National Conference on City Planning (1909)

Florida
Sanibel Plan (2007)
City of Sanibel Comprehensive Plan (1976)

Georgia
The Plan of Savannah (1733)

Hawaii
Hawaii's State Land Use Law (1961)

Idaho

Illinois
The American Society of Planning Officials (ASPO) (1934)
The Chicago Lakefront (1836-present)
The Plan of Chicago (1909)
The Plan of Riverside (1869)
"Local Planning Administration" (1941)
The Plan of Park Forest (1948)
The Merriam Center, Chicago (1930+)

Indiana
New Harmony (1814-27)

Iowa

Kansas

Kentucky
The Lexington Urban Service Area (1958)

Louisiana
The Plan of the Vieux Carre, New Orleans (1721)

Maine

Maryland
Greenbelt (The Greenbelt Towns)
The Plan of Annapolis (1695)
Columbia (1967+)

Massachusetts
Founding of the Harvard University Graduate Planning Program (1929)
The "Emerald Necklace" Parks, Boston (1875+)
Billerica Garden Suburb (1914)

Michigan
The Kalamazoo Mall (1956)

Minnesota

Mississippi

Missouri
Country Club Plaza, Kansas City
The Kansas City, Missouri, Parks Plan (1893)
Founding of the American City Planning Institute, the ACPI (1917)

Montana
Yellowstone National Park (1872)

Nebraska

Nevada

New Hampshire

New Jersey
"Radburn" at Fair Lawn (1928-29)
The Society for the Establishment of Useful Manufactures Plan for Paterson (1791-92)
Yorkship Village, Camden (1918)
Southern Burlington County NAACP v. Township of Mount Laurel (1975)

New Mexico
The Laws of the Indies (1573; 1681)

New York
New York State Adirondack Preserve & Park
The Regional Plan of New York & Environs (1929)
University Settlement House and the Settlement House Movement (1886)
Bronx River Parkway and the Westchester County Parkway System
The New York City Zoning Code (1916)
The Long Island Parkways & Parks
Forest Hills Gardens, Long Island (1911+)
Sunnyside Gardens, Long Island (1924+)
First Houses, New York City (1935-36)
Founding of the American City Planning Institute, the ACPI (1917)
The New York State Commission on Housing and Regional Planning (1923-26)
Grand Central Terminal, New York City (1903-13)
Central Park, New York City (1857)
Second Regional Plan of the Regional Plan Association of New York (1968)
Niagara Reservation State Park (1885)

North Carolina
The Blue Ridge Parkway

North Dakota

Ohio
The Cincinnati Plan of 1925
The Cleveland Group Plan (1903)
Cleveland Policy Plan of 1974
Founding of the Ohio Planning Conference (1919)
Greenhills (The Greenbelt Towns)
The Plan of Mariemont (1922)
The Miami Valley Region's Fair Share Housing Plan (1970)

Oklahoma

Oregon
Oregon's Statewide Program for Land Use Planning (1973)

Pennsylvania
The Plan of Philadelphia (1683)

Rhode Island
College Hill Demonstration of Historic Renewal, Providence (1959)

South Carolina
First American Historic District, Charleston (1931)

South Dakota

Tennessee
Plan of Metro Government Nashville/Davidson County (1956)
The Tennessee Valley Authority (1933+)
The Town of Norris (1933)

Texas
The Paseo del Rio, San Antonio (1939-41)
"A Greater Fort Worth Tomorrow" (1956)

Utah
The Plat of the City of Zion (1833)

Vermont

Virginia
Monument Avenue Historic District, Richmond
Jeffersonian Precinct, University of Virginia (1817)
The New Town of Reston (1962-present)
The Roanoke Plans (1907; 1928)
The Blue Ridge Parkway

Washington

West Virginia
The Appalachian Trail (1921+) [site of administrative headquarters]

Wisconsin
Greendale (The Greenbelt Towns)
The Wisconsin Planning Enabling Act (1909)

Wyoming
Yellowstone National Park (1872)

As designated by The American Institute of Certified Planners: 1986-2006