Pasco, Washington

Pasco
Pasco City Hall
Location of Pasco, Washington
Coordinates: 46°14′19″N 119°07′31″W / 46.23861°N 119.12528°W / 46.23861; -119.12528
CountryUnited States
StateWashington
CountyFranklin
Founded1891
IncorporatedSeptember 3, 1891
Government
  TypeCouncil–manager
  MayorPete Serrano
  City managerAdam Lincoln
Area
  City
37.50 sq mi (97.13 km2)
  Land33.96 sq mi (87.95 km2)
  Water3.54 sq mi (9.18 km2)
Elevation
390 ft (120 m)
Population
 (2020)
  City
77,108
  Estimate 
(2023)
80,038
  RankUS: 455th
WA: 16th
  Density2,221.33/sq mi (857.67/km2)
  Urban
255,401 (US: 157th)
  Metro
311,469 (US: 165th)
  CSA
370,975 (US: 103rd)
  Tri-Cities
226,886
Time zoneUTC-8 (Pacific)
  Summer (DST)UTC-7 (PDT)
ZIP codes
99301, 99302
Area code509
FIPS code53-53545
GNIS feature ID2411381
Websitepasco-wa.gov

Pasco (/ˈpæsk/ PAS-koh) is a city in, and the county seat of, Franklin County, Washington, United States. The population was 77,108 at the 2020 census, and estimated at 80,038 in 2023. Pasco is one of three cities (the others being Kennewick and Richland) that make up Washington state's Tri-Cities region, a mid-sized metropolitan area of approximately 303,622 people.