Waldo County, Maine ZIP codes
20 ZIP codes are in Waldo County.
- ZIP codes
- 20
- Population in these ZIPs
- 40,228
- Avg. median income
- $73,600population-weighted
- Cities & towns
- 20
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ZIP codes in Waldo County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 04354 | Palermo | 1,473 | $89,095 | $360,800 |
| 04438 | Frankfort | 1,098 | $80,000 | $264,400 |
| 04496 | Winterport | 3,850 | $98,333 | $306,800 |
| 04848 | Islesboro | 636 | $88,438 | $435,600 |
| 04849 | Lincolnville | 4,017 | $80,377 | $476,200 |
| 04850 PO Box | Lincolnville Center | — | — | — |
| 04915 | Belfast | 9,107 | $66,362 | $381,900 |
| 04921 | Brooks | 1,775 | $63,646 | $286,200 |
| 04922 | Burnham | 953 | $59,261 | $269,300 |
| 04941 | Freedom | 1,577 | $65,662 | $291,200 |
| 04949 | Liberty | 969 | $71,146 | $332,900 |
| 04951 | Monroe | 1,001 | $81,300 | $288,600 |
| 04952 | Morrill | 1,790 | $67,763 | $321,000 |
| 04972 PO Box | Sandy Point | — | — | — |
| 04973 | Searsmont | 1,646 | $87,000 | $318,800 |
| 04974 | Searsport | 2,655 | $64,303 | $325,700 |
| 04981 | Stockton Springs | 2,575 | $77,560 | $369,100 |
| 04986 | Thorndike | 2,228 | $71,833 | $249,000 |
| 04987 | Troy | 984 | $44,583 | $259,500 |
| 04988 | Unity | 1,894 | $62,929 | $289,100 |
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 and towns in Waldo County
Nearby counties
Frequently asked questions
How many ZIP codes are in Waldo County, Maine?
20 ZIP codes are mainly in Waldo County.
What cities are in Waldo County?
ZIP codes in Waldo County use the city names Belfast, Brooks, Burnham, Frankfort, Freedom, Islesboro, Liberty, Lincolnville, Lincolnville Center, Monroe, Morrill and Palermo and others.