This directory lists official open-data portals for 250 of the largest U.S. cities, organized alphabetically by state. Each link goes directly to that city’s public open-data portal or GIS data hub, the primary source for datasets on demographics, budgets, public safety, permits, zoning, transportation, and elections. Cities with no public open-data portal are omitted.
Last updated: June 2026. Compiled and maintained by Clair Wyant, a data visualization & analytics consultant. Coverage: 250 cities across 44 states and Washington, D.C.
Alabama
Alaska
Arizona
Arkansas
California
- Anaheim
- Bakersfield
- Berkeley
- Carlsbad
- Chula Vista
- Clovis
- Concord
- Corona
- Elk Grove
- Fairfield
- Fontana
- Fremont
- Fresno
- Fullerton
- Garden Grove
- Glendale
- Hayward
- Irvine
- Lancaster
- Long Beach
- Los Angeles
- Menifee
- Moreno Valley
- Oakland
- Orange
- Oxnard
- Palmdale
- Pasadena
- Rancho Cucamonga
- Richmond
- Riverside
- Roseville
- Sacramento
- Salinas
- San Diego
- San Francisco
- San Jose
- Santa Ana
- Santa Clara
- Santa Clarita
- Santa Rosa
- Stockton
- Sunnyvale
- Temecula
- Thousand Oaks
- Torrance
- Vallejo
- Ventura
- Victorville
- Visalia
Colorado
Connecticut
Florida
- Cape Coral
- Fort Lauderdale
- Gainesville
- Hialeah
- Jacksonville
- Lakeland
- Miami
- Orlando
- Palm Bay
- Palm Coast
- Pembroke Pines
- Pompano Beach
- Port St. Lucie
- St. Petersburg
- Tallahassee
- Tampa
- West Palm Beach
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Jersey
New Mexico
New York
North Carolina
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
- Abilene
- Allen
- Amarillo
- Arlington
- Austin
- Beaumont
- College Station
- Corpus Christi
- Dallas
- Denton
- El Paso
- Fort Worth
- Frisco
- Garland
- Grand Prairie
- Houston
- Irving
- Laredo
- Lewisville
- Lubbock
- McAllen
- McKinney
- Mesquite
- Midland
- New Braunfels
- Odessa
- Pearland
- Plano
- Richardson
- Round Rock
- San Antonio
- Waco
Utah
Virginia
Washington
Washington, D.C.
Wisconsin
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