First three digits · Montana
ZIP Codes Starting with
23 ZIP codes start with 595, sorted at the Great Falls, MT (SCF 594) sectional center (USPS labeling list L005, effective October 1, 2026) in Montana: 23 residential ZIP codes across 5 counties (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 595 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 595, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 595 to the Great Falls, MT (SCF 594) facility. The last two digits pick the delivery area. By residents, the largest town names among the 595 ZIP codes are Havre, Box Elder, Malta, Chinook, Harlem and Hays.
The same facility sorts 3 prefixes, 111 ZIP codes in all: 594, 595, 596.
Where are the 595 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 595
| County | ||||||
|---|---|---|---|---|---|---|
| 59501 | Havre | Hill County | 12,243 | 9 | $52k | $218k |
| 59520 | Big Sandy | Chouteau County | 1,261 | 1 | $62k | $204k |
| 59521 | Box Elder | Hill County | 3,529 | 12 | $50k | $104k |
| 59522 | Chester | Liberty County | 1,315 | 2 | $57k | $177k |
| 59523 | Chinook | Blaine County | 2,356 | 2 | $74k | $218k |
| 59524 | Dodson | Phillips County | 643 | 1 | $48k | $62k |
| 59525 | Gildford | Hill County | 473 | 2 | $48k | $94k |
| 59526 | Harlem | Blaine County | 2,319 | 3 | $64k | $85k |
| 59527 | Hays | Blaine County | 1,345 | 6 | $55k | $81k |
| 59528 | Hingham | Hill County | 249 | 1 | $89k | $171k |
| 59529 | Hogeland | Blaine County | 144 | 0 | $88k | $325k |
| 59530 | Inverness | Hill County | 141 | 1 | $62k | $192k |
| 59531 | Joplin | Liberty County | 351 | 1 | $68k | $110k |
| 59532 | Kremlin | Hill County | 97 | 0 | $58k | – |
| 59535 | Lloyd | Blaine County | 33 | 0 | – | – |
| 59537 | Loring | Phillips County | 159 | 0 | – | – |
| 59538 | Malta | Phillips County | 2,737 | 1 | $57k | $192k |
| 59540 | Rudyard | Hill County | 430 | 1 | $74k | $131k |
| 59542 | Turner | Blaine County | 442 | 1 | $57k | $188k |
| 59544 | Whitewater | Phillips County | 207 | 0 | $40k | $250k |
| 59545 | Whitlash | Liberty County | 55 | 1 | $101k | $292k |
| 59546 | Zortman | Phillips County | 191 | 2 | $49k | – |
| 59547 | Zurich | Blaine County | 51 | 0 | – | $131k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.