ZIP Code 04421 – Castine, Maine | ZipsCode.us
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ZIP Code 04421
Castine, Maine · Hancock
ZIP code 04421 belongs to the city of Castine in Maine (Hancock). See all Maine ZIP Codes.
ZIP code 04421 belongs to Castine, Maine, in Hancock. If you are mailing a letter or package to this area, use Castine, ME 04421 in the address. On this page you will find the city and county for 04421, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.
What City Is ZIP Code 04421?
The city for ZIP code 04421 is Castine, Maine. When you write an address in this area, the correct format is: Name, Street Address, Castine, ME 04421.
ZIP Code 04421 County and State
ZIP code 04421 is located in Hancock, Maine. For a complete list of cities and ZIP codes across the state, see the Maine ZIP Codes page.
Nearby ZIP Codes in Hancock
These ZIP codes are in the same county as 04421:
ZIP Code 04421 on the Map
The map below shows the approximate center of ZIP code 04421, near Castine, Maine. You can zoom in and drag the map to explore the area.
Map center is approximate (ZIP area center, around 44.4156, -68.7929). Map data © OpenStreetMap.
Population and Demographics of ZIP Code 04421
According to public U.S. Census Bureau data, ZIP code 04421 is home to a community in Maine. The figures below come from the U.S. Census and the American Community Survey (ACS).
Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates and 2023 Gazetteer. Figures are estimates and change with each new survey.
Find an Address in ZIP Code 04421
Need the full ZIP+4 code for a specific street address in Castine? Use the free ZIP+4 Lookup tool, or find any ZIP code from a street address with the ZIP Code by Address tool.
Frequently Asked Questions
What city is ZIP code 04421?
ZIP code 04421 is for Castine, Maine.
What county is ZIP code 04421 in?
ZIP code 04421 is in Hancock, Maine.
What state is ZIP code 04421 in?
ZIP code 04421 is in Maine (ME).
How do I find the ZIP+4 for an address in 04421?
Use the free ZIP+4 Lookup tool with the full street address to get the complete 9-digit ZIP code.
What are the nearby ZIP codes to 04421?
Nearby ZIP codes include 04408 (Aurora), 04416 (Bucksport), 04420 (Castine), 04431 (East Orland), 04472 (Orland).
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