County ZIP codes · Maine · FIPS 23019
Penobscot County, ME ZIP Codes
Penobscot County, Maine has 49 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 47 residential and 2 for PO boxes or a single organization. 41 of the residential ones lie mainly in Penobscot County and 6 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $42,011 in 04430 (East Millinocket) to $106,554 in 04444 (Hampden) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Penobscot County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $56,645 and $72,379.
They carry 46 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 47 residential ZIP codes in Penobscot County
41 ZIP codes lie mainly in Penobscot County; 6 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 04401 | Bangor | 44,854 | 448 | $67k | $240k | 100% |
| 04412 | Brewer | 9,652 | 633 | $67k | $245k | 100% |
| 04444 | Hampden | 9,371 | 136 | $107k | $293k | 100% |
| 04468 | Old Town | 9,291 | 76 | $56k | $204k | 100% |
| 04473 | Orono | 8,371 | 483 | $62k | $273k | 100% |
| 04457 | Lincoln | 5,823 | 23 | $57k | $146k | 100% |
| 04930 | Dexter | 4,258 | 71 | $54k | $169k | 58% |
| 04474 | Orrington | 3,853 | 154 | $95k | $309k | 100% |
| 04469 | Orono | 3,531 | 4,130 | – | – | 100% |
| 04428 | Eddington | 3,334 | 56 | $73k | $245k | 100% |
| 04953 | Newport | 3,143 | 106 | $60k | $235k | 100% |
| 04461 | Milford | 3,095 | 68 | $85k | $176k | 100% |
| 04456 | Levant | 3,069 | 102 | $86k | $269k | 100% |
| 04427 | Corinth | 2,990 | 74 | $64k | $136k | 100% |
| 04419 | Carmel | 2,941 | 80 | $82k | $257k | 100% |
| 04928 | Corinna | 2,192 | 57 | $57k | $163k | 100% |
| 04493 | West Enfield | 1,840 | 27 | $62k | $184k | 100% |
| 04418 | Greenbush | 1,649 | 14 | $61k | $135k | 100% |
| 04411 | Bradley | 1,645 | 33 | $77k | $202k | 100% |
| 04448 | Howland | 1,540 | 16 | $55k | $152k | 100% |
| 04430 | East Millinocket | 1,495 | 212 | $42k | $86k | 100% |
| 04765 | Patten | 1,434 | 2 | $50k | $121k | 100% |
| 04450 | Kenduskeag | 1,333 | 80 | $80k | $178k | 100% |
| 04969 | Plymouth | 1,319 | 44 | $62k | $207k | 100% |
| 04410 | Bradford | 1,254 | 30 | $83k | $176k | 100% |
| 04434 | Etna | 1,252 | 51 | $72k | $183k | 100% |
| 04449 | Hudson | 1,251 | 34 | $68k | $155k | 100% |
| 04932 | Dixmont | 1,207 | 33 | $76k | $191k | 100% |
| 04488 | Stetson | 1,151 | 33 | $76k | $206k | 100% |
| 04422 | Charleston | 1,117 | 28 | $75k | $227k | 100% |
| 04460 | Medway | 1,111 | 14 | $50k | $101k | 100% |
| 04435 | Exeter | 1,093 | 28 | $84k | $167k | 100% |
| 04455 | Lee | 925 | 11 | $50k | $175k | 100% |
| 04487 | Springfield | 838 | 4 | $48k | $109k | 100% |
| 04939 | Garland | 823 | 22 | $51k | $205k | 100% |
| 04453 | Lagrange | 785 | 10 | $59k | $135k | 100% |
| 04777 | Stacyville | 478 | 6 | $54k | $106k | 100% |
| 04475 | Passadumkeag | 384 | 17 | $55k | $99k | 100% |
| 04417 | Burlington | 355 | 4 | $46k | $96k | 100% |
| 04495 | Winn | 287 | 7 | $36k | $96k | 100% |
| 04489 | Stillwater | 214 | 859 | – | $263k | 100% |
Partly in Penobscot County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 04459 | Mattawamkeag | 750 | 10 | $49k | $112k | 49% |
| 04451 | Kingman | 217 | 4 | $32k | $67k | 48% |
| 04429 | Holden | 5,008 | 71 | $97k | $314k | 44% |
| 04462 | Millinocket | 4,464 | 6 | $52k | $113k | 29% |
| 04733 | Benedicta | 465 | 7 | $59k | $127k | 24% |
| 04497 | Wytopitlock | 311 | 1 | $49k | $97k | 17% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
7 ZIP codes of Penobscot County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Penobscot | Elsewhere |
|---|---|---|
| 04429 | 44% | Hancock County 56% |
| 04462 | 29% | Piscataquis County 71% |
| 04930 | 58% | Somerset County 42% |
| 04459 | 49% | Aroostook County 51% |
| 04733 | 24% | Aroostook County 76% |
| 04497 | 17% | Aroostook County 83% |
| 04451 | 48% | Aroostook County 52% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 04402 | Bangor |
| 04933 | East Newport |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Penobscot County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Penobscot County's ZIP codes use 3 prefixes: 044, 047 and 049.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 044 | Eastern, ME (SCF 044) | 39 | 68 |
| 047 | Eastern, ME (SCF 044) | 3 | 44 |
| 049 | Eastern, ME (SCF 044) | 7 | 70 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.