Castine, ME ZIP Codes
One ZIP code serves Castine, Maine: 04421. Together they are home to 1,362 residents in 352 households. That is more than the 996 people counted inside Castine Census-designated place, because these ZIP codes reach past its boundary.
Castine Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 996 |
| Households | 183 |
| Median household income | $168,516 |
| Median home value | $798,800 |
| Median age | 20.4 |
| Median rent | not published |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 1,362 |
| Households (sum of ZIP codes) | 352 |
| Median household income, range across ZIP codes | $113,750 (04421) to $113,750 (04421) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $113,750 |
| Homeowners | 80.4% |
| Households with kids under 18 | 18.5% |
| Moved in the past year | 20.2% |
| Carrier routes in EDDM2GO's route library | 1 routes, 110 homes (1 of 1 ZIP codes) |
Every ZIP code in Castine
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 04421 | Castine | 1,362 | 352 | $113,750 | $603,500 | 80.4% | 18.5% | 20.2% | 1 | 111 | 20% of its land; mailing city |
A ZIP code is listed for Castine when at least 10% of its land lies inside the Castine Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Castine. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Castine.
Counties
- Hancock County — 41 ZIP codes
Price a mailing to Castine ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Castine, ME?
- 04421. A ZIP code is listed for Castine when at least 10% of its land lies inside the Castine Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Castine.
- What is the population of Castine, ME?
- The Census Bureau counts 996 residents inside Castine Census-designated place (ACS 2020–2024). The 1 ZIP code that serve Castine hold 1,362 residents in all.
- What is the median household income in Castine, ME?
- $168,516 inside Castine Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $113,750 to $113,750.
- How many carrier routes and mailboxes are in Castine, ME?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 1 carrier routes reaching 110 residential and 1 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.