Knoxville, IA ZIP code
The ZIP code for Knoxville, Iowa is 50138. It is in Marion County.
- Population in these ZIPs
- 11,117
- Avg. median income
- $74,700population-weighted
- Typical home value
- $208,600population-weighted
- Metro area
- Pella, IA
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Knoxville, IA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 50138 | 11,117 | $74,693 | $208,600 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Knoxville
Frequently asked questions
What is the ZIP code for Knoxville, IA?
The ZIP code for Knoxville, IA is 50138.
What county is Knoxville, Iowa in?
Knoxville ZIP codes are in Marion County.