Union ZIP code, Maine
The ZIP code for Union, ME is 04862, and its area code is 207.
- USPS city name
- 1 ZIP code
- Population
- 4,023
- Area code
- 207
- County
- Knox County
- State
- Maine
Union in numbers
About 4,023 people live in Union, in 1,725 households. The median household income is $73,536 a year, about the same as the Maine median of $74,733 (US: $80,734). The median owner-occupied home is valued at $252,300 (15% below the Maine median).
| Population | 4,023 |
|---|---|
| Households | 1,725 |
| Median household income | $73,536 |
| Median home value | $252,300 |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Union. Survey estimates carry margins of error, wider for small places. Sources and methods.
ZIP codes addressed as Union
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
04862 | Union , ME | Standard | 4,023 | $73,536 | $252,300 |
Map of Union ZIP codes
The ZIP codes of Union, ME, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Towns near Union
The nearest larger towns are Rockland (7,035 people, 12 mi), Belfast (6,986 people, 17 mi) and Augusta (19,077 people, 23 mi).
| Town | Population | Distance |
|---|---|---|
| Camden | 3,682 | 10.9 mi |
| Rockland | 7,035 | 12.1 mi |
| Belfast | 6,986 | 16.8 mi |
| Augusta | 19,077 | 23.1 mi |
| Winslow | 5,873 | 25.9 mi |
| Gardiner | 6,088 | 26.0 mi |
| Hallowell | 2,592 | 26.8 mi |
| Waterville | 17,077 | 27.2 mi |
| Oakland | 2,710 | 29.1 mi |
More nearby: every ZIP code in Knox County · Maine ZIP codes
Cite this page
zipcodes.pro. “Union, ME ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/me/union
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