Grundy County, Iowa

Grundy County
Location within the U.S. state of Iowa
Iowa's location within the U.S.
Coordinates: 42°24′06″N 92°47′15″W / 42.401666666667°N 92.7875°W / 42.401666666667; -92.7875
Country United States
State Iowa
Founded1851
Named afterFelix Grundy
SeatGrundy Center
Largest cityGrundy Center
Area
  Total
502 sq mi (1,300 km2)
  Land502 sq mi (1,300 km2)
  Water0.04 sq mi (0.1 km2)  0.01%
Population
 (2020)
  Total
12,329
  Density25/sq mi (9.5/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitewww.grundycountyiowa.gov

Grundy County is a county located in the U.S. state of Iowa. At the 2020 census, the population was 12,329. The county seat is Grundy Center. The county is named for Felix Grundy, former U.S. Attorney General.

Grundy County is included in the Waterloo-Cedar Falls metropolitan area.