Ada Township, South Dakota
Township
Ada Township Location within South Dakota Show map of South Dakota Ada Township Location within the United States Show map of the United States
Coordinates: 45°20′38″N 102°24′39″W / 45.34389°N 102.41083°W / 45.34389; -102.41083
Country	United States
State	South Dakota
County	Perkins
Area
• Total	35.6 sq mi (92.3 km2)
• Land	35.4 sq mi (91.8 km2)
• Water	0.2 sq mi (0.5 km2)
Elevation	2,484 ft (757 m)
Population  (2000)
• Total	23
• Density	0.6/sq mi (0.3/km2)
Time zone	UTC-7 (Mountain (MST))
• Summer (DST)	UTC-6 (MDT)
ZIP code	57620
Area code	605
FIPS code	46-00220[1]
GNIS feature ID	1269024[2]

Ada (ZIP code 57644) is a rural township in Perkins County, South Dakota, with a population of 557.