Thornburg, IA ZIP code
The ZIP code for Thornburg, Iowa is 50255. It is in Keokuk County.
- Population in these ZIPs
- 51
- Avg. median income
- $39,700population-weighted
- Typical home value
- —population-weighted
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Thornburg, IA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 50255 | 51 | $39,722 | — |
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 Thornburg
- Keswick 2 mi
- What Cheer 4 mi
- Gibson 4 mi
- Webster 7 mi
- Barnes City 7 mi
- Deep River 8 mi
- Delta 10 mi
- Rose Hill 10 mi
- Millersburg 12 mi
- Sigourney 12 mi
- Guernsey 13 mi
- Montezuma 13 mi
Frequently asked questions
What is the ZIP code for Thornburg, IA?
The ZIP code for Thornburg, IA is 50255.
What county is Thornburg, Iowa in?
Thornburg ZIP codes are in Keokuk County.