Sunnyside, Washington

Sunnyside
Edison Avenue
Location of Sunnyside, Washington
Coordinates: 46°19′04″N 119°59′40″W / 46.31778°N 119.99444°W / 46.31778; -119.99444
CountryUnited States
StateWashington
CountyYakima
IncorporatedSeptember 16, 1902
Government
  TypeCouncil–manager
Area
  Total
7.53 sq mi (19.49 km2)
  Land7.53 sq mi (19.49 km2)
  Water0.00 sq mi (0.00 km2)
Elevation
735 ft (224 m)
Population
 (2020)
  Total
16,375
  Estimate 
(2022)
16,296
  Density2,232.03/sq mi (861.84/km2)
Time zoneUTC−8 (Pacific (PST))
  Summer (DST)UTC−7 (PDT)
ZIP code
98944
Area code509
FIPS code53-68750
GNIS feature ID2412008
Websitesunnyside-wa.gov

Sunnyside is a city in Yakima County, Washington, United States. The population was 16,375 at the 2020 census, making it the second-most populous city in Yakima County.