Postal reference / United States
04364Winthrop, Maine
ZIP code 04364 is a United States postal code for Winthrop, Maine. Its county association is Kennebec County. The map reference point is at 44.3229, -69.9576.
- State / territory
- Maine
- Recorded place name
- Winthrop
- County association
- Kennebec
- Estimated coordinate
- 44.3229, -69.9576
View on OpenStreetMap - ZIP prefix
- 043 · 26 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 31.141 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
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Browse the other 484 ZIP codes recorded for Maine, sorted by code with place and county.
Maine directoryNearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 04343 | East Winthrop | ME | Kennebec | 3.0 |
| 04351 | Manchester | ME | Kennebec | 5.1 |
| 04265 | North Monmouth | ME | Kennebec | 5.1 |
| 04355 | Readfield | ME | Kennebec | 5.6 |
| 04284 | Wayne | ME | Kennebec | 5.9 |
| 04336 | Augusta | ME | Kennebec | 6.9 |
| 04259 | Monmouth | ME | Kennebec | 7.8 |
| 04347 | Hallowell | ME | Kennebec | 7.9 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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