| ZIP Code | 4421 |
| City | Castine |
| State | Maine (ME) |
| County | Hancock |
| Timezone | America/New_York |
| Coordinates | 44.4111000, -68.7952400 |
| Population | 1,362 |
| ZIP Type | STANDARD |
| Country | United States |
Located in Maine, the United States is home to the small community of Castine, served by ZIP code 4421. It sits within Hancock County.
Castine has a reported population of 1,362. That's below the Maine average of about 3,327 people per ZIP code.
Population density runs around 67 people per sq. mile, making it a rural area.
Nearby communities in Maine include Bangor, Lewiston, Portland.
The ZIP code for Castine, Maine is 4421.
4421 is located in Hancock County, Maine.
The population of 4421 (Castine) is approximately 1,362 people.
4421 is less populated than the typical Maine ZIP code, which averages around 3,327 people.
ZIP code codes near 4421 include 4401, 4240, 4103.