| ZIP Codes: | 43 ZIP Codes (33 Standard, 9 PO Box, 1 Unique) [See All] |
| Area Code: | 207 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:47 PM |
| Population: | 54,784 [See All] |
| FIPS: | 23009 |
| Land Area: | 1,303 sq mi |
| Water Area: | 569 sq mi |
| Coordinates: | 44.3916, -68.4266 |
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54,784 residents live across 43 ZIPs covering 1,303 sq mi, served by 42 distinct USPS-recognized cities.
Population moved from 52,771 to 54,784 from 2014 to 2024 — a +3.8% change. 22 ZIPs gained residents, 17 lost.
The county's wealthiest ZIP 04421 (Castine, $113,750 median) and poorest ZIP 04617 (Brooksville, $52,078) are 4.7 miles apart — a 2.2× income gap across local geography.
Median home values vary 3.4× across this county — from $210,500 in 04693 (Winter Harbor) to $707,400 in 04662 (Northeast Harbor).
Density varies 8× across the county — from 19 people/sq mi in 04634 (Franklin) to 151 in 04421 (Castine).
Educational attainment ranges from 24.2% bachelor's+ in 04634 (Franklin) to 74.5% in 04421 (Castine) — the breadth of educational profiles across the area.
Within Maine, this is the #8 most populous of 16 counties and ranks #6 for median household income .
Hosts 1 single-entity Unique ZIP: 04420Maine Maritime Academy .
Weighted by population, the typical household earns about $74,214 across the county — reflecting what a typical resident sees, not a simple ZIP average.
39.9% of adults age 25+ hold a bachelor's degree or higher (16,747 of 42,023 reporting).
33 Standard delivery, 9 PO Box only, 1 single-entity Unique ZIPs serve this county.
3 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 04605 | Ellsworth | Standard | 14,529 | $77,377 | 364.5 | 11.2% |
| 04416 | Bucksport | Standard | 5,497 | $64,587 | 63.8 | -0.2% |
| 04609 | Bar Harbor | Standard | 5,244 | $77,180 | 41.1 | -0.5% |
| 04614 | Blue Hill | Standard | 2,813 | $80,377 | 58.7 | 15.3% |
| 04640 | Hancock | Standard | 2,450 | $71,699 | 28.2 | 17.1% |
| 04634 | Franklin | Standard | 2,374 | $67,589 | 121.8 | 28.3% |
| 04627 | Deer Isle | Standard | 2,137 | $61,703 | 22.8 | 30.1% |
| 04472 | Orland | Standard | 1,852 | $69,022 | 54.4 | -11.2% |
| 04684 | Surry | Standard | 1,836 | $74,508 | 44.8 | 10.2% |
| 04679 | Southwest Harbor | Standard | 1,553 | $59,205 | 15.9 | -21.4% |
| 04421 | Castine | Standard | 1,362 | $113,750 | 9.0 | -4.4% |
| 04664 | Sullivan | Standard | 1,246 | $59,643 | 45.7 | 15.1% |
| 04476 | Penobscot | Standard | 1,154 | $63,194 | 45.5 | 0.1% |
| 04607 | Gouldsboro | Standard | 1,142 | $60,152 | 46.8 | -6.2% |
| 04676 | Sedgwick | Standard | 1,130 | $73,333 | 24.7 | 9.6% |
| 04660 | Mount Desert | Standard | 1,072 | $78,646 | 32.8 | -15.5% |
| 04616 | Brooklin | Standard | 869 | $68,750 | 18.7 | 1.3% |
| 04681 | Stonington | Standard | 840 | $60,223 | 17.5 | -36.0% |
| 04653 | Bass Harbor | Standard | 719 | $90,250 | 4.8 | 48.6% |
| 04617 | Brooksville | Standard | 651 | $52,078 | 29.7 | -19.8% |
| 04612 | Bernard | Standard | 505 | $89,839 | 5.9 | -14.1% |
| 04693 | Winter Harbor | Standard | 493 | $86,250 | 13.6 | 3.8% |
| 04662 | Northeast Harbor | PO Box | 476 | $108,214 | 3.3 | -10.0% |
| 04685 | Swans Island | Standard | 438 | $86,250 | 13.4 | 45.0% |
| 04677 | Sorrento | Standard | 345 | $83,438 | 3.8 | 21.1% |
| 04650 | Little Deer Isle | Standard | 333 | $110,063 | 3.9 | 120.5% |
| 04674 | Seal Cove | Standard | 284 | $76,667 | 4.6 | -59.0% |
| 04624 | Corea | Standard | 225 | $61,691 | 5.8 | 81.5% |
| 04642 | Harborside | Standard | 202 | $71,563 | 9.0 | 176.7% |
| 04408 | Aurora | Standard | 194 | — | 130.4 | -0.5% |
| 04669 | Prospect Harbor | Standard | 171 | $66,071 | 1.7 | 12.5% |
| 04673 | Sargentville | Standard | 144 | $53,750 | 3.1 | 35.8% |
| 04646 | Islesford | PO Box | 134 | $88,750 | 1.0 | 54.0% |
| 04675 | Seal Harbor | PO Box | 123 | $250,001 | 5.9 | -67.4% |
| 04613 | Birch Harbor | Standard | 92 | — | 1.5 | -50.0% |
| 04431 | East Orland | PO Box | 63 | — | 0.0 | 53.7% |
| 04625 | Cranberry Isles | PO Box | 62 | $38,500 | 2.2 | 72.2% |
| 04635 | Frenchboro | PO Box | 30 | $42,250 | 2.7 | -62.0% |
| 04683 | Sunset | Standard | 0 | — | 0.0 | -100.0% |
| 04420 | Castine | Unique | — | — | 0.0 | — |
| 04629 | East Blue Hill | PO Box | — | — | 0.0 | — |
| 04644 | Hulls Cove | PO Box | — | — | 0.0 | — |
| 04672 | Salsbury Cove | PO Box | — | — | 0.0 | — |