Sunnyside Flag

Sunnyside

County:
Yakima County
County Seat:
No
Area (mi²):
7.552
State:
Washington

Sunnyside is a city located in Yakima County, Washington. Sunnyside has a 2026 population of 16,317. Sunnyside is currently growing at a rate of 0.7% annually but its population has decreased by -0.48% since the most recent census, which recorded a population of 16,396 in 2020.

16.3K
Total Population
2,161
Density (mi²)
113 0.7%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)