ZIP Code 50138 – Knoxville, IA
Knoxville, Iowa · Marion County · Central time
| ZIP code | 50138 |
|---|---|
| City | Knoxville |
| State | Iowa |
| County | Marion County |
| Population | 11,117 |
| Time zone | Central · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 168.15 sq mi |
| Center (lat, long) | 41.3029, -93.1077 |
Area codes in this area
These are the area codes that most often serve ZIP 50138 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 50138
ZIP code 50138 is assigned to Knoxville, Iowa. It lies in Marion County. Its Census area covers about 168.15 square miles of land. The closest neighboring ZIP is 50062 (Melcher Dallas), about 8.5 miles away.
Every address in 50138 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources