First three digits · Maine
ZIP Codes Starting with
20 ZIP codes start with 048, sorted at the Southern, ME (SCF 040) sectional center (USPS labeling list L005, effective October 1, 2026) in Maine: 18 residential ZIP codes across 3 counties and 2 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 048 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, 048, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 048 to the Southern, ME (SCF 040) facility. The last two digits pick the delivery area. By residents, the largest town names among the 048 ZIP codes are Rockland, Camden, Warren, Union, Lincolnville and Rockport.
The same facility sorts 7 prefixes, 240 ZIP codes in all: 039, 040, 041, 042, 043, 045, 048.
Where are the 048 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 048
| County | ||||||
|---|---|---|---|---|---|---|
| 04841 | Rockland | Knox County | 7,035 | 548 | $57k | $246k |
| 04843 | Camden | Knox County | 5,242 | 284 | $82k | $521k |
| 04847 | Hope | Knox County | 1,748 | 80 | $87k | $373k |
| 04848 | Islesboro | Waldo County | 636 | 44 | $88k | $289k |
| 04849 | Lincolnville | Waldo County | 4,017 | 66 | $80k | $361k |
| 04850 | Lincolnville Center | Waldo County | PO Box or unique | – | – | – |
| 04851 | Matinicus | Knox County | 48 | 25 | $65k | $350k |
| 04852 | Monhegan | Lincoln County | 120 | 141 | – | $702k |
| 04853 | North Haven | Knox County | 480 | 42 | $88k | $440k |
| 04854 | Owls Head | Knox County | 1,482 | 140 | $87k | $413k |
| 04855 | Port Clyde | Knox County | 313 | 268 | $250k+ | $358k |
| 04856 | Rockport | Knox County | 3,675 | 170 | $87k | $469k |
| 04858 | South Thomaston | Knox County | 1,378 | 121 | $87k | $341k |
| 04859 | Spruce Head | Knox County | 753 | 170 | $75k | – |
| 04860 | Tenants Harbor | Knox County | 1,543 | 79 | $87k | $271k |
| 04861 | Thomaston | Knox County | 2,769 | 253 | $56k | $272k |
| 04862 | Union | Knox County | 4,023 | 62 | $74k | $252k |
| 04863 | Vinalhaven | Knox County | 1,216 | 52 | $73k | $428k |
| 04864 | Warren | Knox County | 4,932 | 106 | $75k | $233k |
| 04865 | West Rockport | Knox County | PO Box or unique | – | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.