Monmouth, IA ZIP code
The ZIP code for Monmouth, Iowa is 52309. It is in Jackson County.
- Population in these ZIPs
- 443
- Avg. median income
- $56,300population-weighted
- Typical home value
- $268,200population-weighted
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Monmouth, IA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 52309 | 443 | $56,250 | $268,200 |
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 Monmouth
- Baldwin 4 mi
- Onslow 5 mi
- Wyoming 8 mi
- Center Junction 10 mi
- Oxford Junction 11 mi
- Maquoketa 11 mi
- Bernard 11 mi
- Cascade 12 mi
- Lost Nation 13 mi
- Zwingle 14 mi
- Andrew 15 mi
- Olin 16 mi
Frequently asked questions
What is the ZIP code for Monmouth, IA?
The ZIP code for Monmouth, IA is 52309.
What county is Monmouth, Iowa in?
Monmouth ZIP codes are in Jackson County.