Knoxville, IA zip code
Knoxville, Iowa uses one zip code: 50138. Most of it is in Marion County. Together these zip codes are home to about 11K people.
Zip codes
1
Population
11K
All zips combined
Largest zip
50138
11,117 residents
Zip codes in Knoxville
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 50138 | 11,117 | $74,693 |