| County : | Grundy County |
| State : | Iowa (IA) |
| Land Area : | 501.86 sq mi |
| Water Area : | 0.04 sq mi |
| Latitude : | 42.4033232 |
| Longitude : | -92.7902613 |
| Population (2010): | 12,453 |
| Population Estimate (2012) : | 12,431 |
| Population Density : | 24.81/sq mi |
| Housing Units (2012) : | 5,530 |
| Median Household Income (2012) : | $56,264 (Iowa : $51,129, USA : $53,046) |
| Median Family Income (2012) : | $69,909 (Iowa : $64,772, USA : $64,585) |
| Median House Price (2012) : | $118,500 (Iowa : $123,000, USA : $181,400) |
Grundy County Cities / Towns
| Beaman City (191) | Conrad City (1,108) | Dike City (1,209) |
| Grundy Center City (2,706) | Holland City (282) | Morrison City (94) |
| Reinbeck City (1,664) | Stout City (224) | Wellsburg City (707) |
Grundy County Zip Codes
| 50601 (2,464) | 50604 (1,850) | 50609 (446) |
| 50613 (42,031) | 50621 (1,530) | 50624 (1,743) |
| 50627 (3,456) | 50638 (3,313) | 50642 (581) |
| 50643 (2,747) | 50660 (1,333) | 50665 (2,841) |
| 50669 (2,436) | 50672 (594) | 50673 (219) |
| 50680 (1,095) |