Monmouth, ME ZIP code
The ZIP code for Monmouth, Maine is 04259. It is in Kennebec County.
- Population in these ZIPs
- 3,610
- Avg. median income
- $83,900population-weighted
- Typical home value
- $356,700population-weighted
- Metro area
- Augusta-Waterville, ME
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Monmouth, ME ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 04259 | 3,610 | $83,919 | $356,700 |
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
- North Monmouth 3 mi
- Litchfield 6 mi
- Winthrop 6 mi
- Greene 7 mi
- Leeds 7 mi
- Wayne 8 mi
- Sabattus 8 mi
- Farmingdale 9 mi
- Hallowell 10 mi
- Manchester 11 mi
- Readfield 11 mi
- Lewiston 11 mi
Frequently asked questions
What is the ZIP code for Monmouth, ME?
The ZIP code for Monmouth, ME is 04259.
What county is Monmouth, Maine in?
Monmouth ZIP codes are in Kennebec County.