Keystone, IA zip code
Keystone, Iowa uses one zip code: 52249. Most of it is in Benton County. Together these zip codes are home to about 1.1K people.
Zip codes
1
Population
1.1K
All zips combined
Largest zip
52249
1,060 residents
Zip codes in Keystone
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 52249 | 1,060 | $75,417 |