First three digits · Maine
ZIP Codes Starting with
26 ZIP codes start with 043, sorted at the Southern, ME (SCF 040) sectional center (USPS labeling list L005, effective October 1, 2026) in Maine: 21 residential ZIP codes across 4 counties and 5 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 043 mean?
The first digit, 0, is one of ten national areas (Connecticut, Massachusetts, Maine, New Hampshire, New Jersey, Puerto Rico, Rhode Island, Vermont, U.S. Virgin Islands and Armed Forces Europe). The first three, 043, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 043 to the Southern, ME (SCF 040) facility. The last two digits pick the delivery area. By residents, the largest town names among the 043 ZIP codes are Augusta, Gardiner, Winthrop, South China, Litchfield and Richmond.
The same facility sorts 7 prefixes, 240 ZIP codes in all: 039, 040, 041, 042, 043, 045, 048.
Where are the 043 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 043
| County | ||||||
|---|---|---|---|---|---|---|
| 04330 | Augusta | Kennebec County | 26,690 | 228 | $55k | $217k |
| 04332 | Augusta | Kennebec County | PO Box or unique | – | – | – |
| 04333 | Augusta | Kennebec County | PO Box or unique | – | – | – |
| 04336 | Augusta | Kennebec County | PO Box or unique | – | – | – |
| 04338 | Augusta | Kennebec County | PO Box or unique | – | – | – |
| 04341 | Coopers Mills | Lincoln County | 42 | 1,273 | – | – |
| 04342 | Dresden | Lincoln County | 1,645 | 54 | $75k | $240k |
| 04343 | East Winthrop | Kennebec County | PO Box or unique | – | – | – |
| 04344 | Farmingdale | Kennebec County | 3,017 | 268 | $72k | $250k |
| 04345 | Gardiner | Kennebec County | 12,579 | 175 | $77k | $243k |
| 04346 | Randolph | Kennebec County | 1,610 | 754 | $67k | $174k |
| 04347 | Hallowell | Kennebec County | 2,592 | 442 | $68k | $295k |
| 04348 | Jefferson | Lincoln County | 3,484 | 46 | $79k | $286k |
| 04349 | Kents Hill | Kennebec County | 1,383 | 47 | $60k | $258k |
| 04350 | Litchfield | Kennebec County | 3,680 | 98 | $85k | $244k |
| 04351 | Manchester | Kennebec County | 2,424 | 113 | $92k | $300k |
| 04352 | Mount Vernon | Kennebec County | 1,716 | 45 | $74k | $264k |
| 04353 | Whitefield | Lincoln County | 2,115 | 45 | $74k | $242k |
| 04354 | Palermo | Waldo County | 1,473 | 36 | $89k | $260k |
| 04355 | Readfield | Kennebec County | 2,651 | 91 | $87k | $326k |
| 04357 | Richmond | Sagadahoc County | 3,566 | 117 | $66k | $243k |
| 04358 | South China | Kennebec County | 4,526 | 91 | $96k | $240k |
| 04359 | South Gardiner | Kennebec County | 298 | 400 | – | $187k |
| 04360 | Vienna | Kennebec County | 536 | 22 | $76k | $276k |
| 04363 | Windsor | Kennebec County | 2,690 | 78 | $63k | $229k |
| 04364 | Winthrop | Kennebec County | 6,191 | 199 | $87k | $295k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.