First three digits · Montana
ZIP Codes Starting with
31 ZIP codes start with 593, sorted at the Billings, MT (SCF 590) sectional center (USPS labeling list L005, effective October 1, 2026) in Montana: 30 residential ZIP codes across 9 counties and 1 PO Box or single-organization code (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 593 mean?
The first digit, 5, is one of ten national areas (Iowa, Minnesota, Montana, North Dakota, South Dakota and Wisconsin). The first three, 593, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 593 to the Billings, MT (SCF 590) facility. The last two digits pick the delivery area. By residents, the largest town names among the 593 ZIP codes are Miles City, Glendive, Forsyth, Baker, Colstrip and Wibaux.
The same facility sorts 6 prefixes, 211 ZIP codes in all: 590, 591, 592, 593, 597, 821.
Where are the 593 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 593
| County | ||||||
|---|---|---|---|---|---|---|
| 59301 | Miles City | Custer County | 11,643 | 4 | $71k | $218k |
| 59311 | Alzada | Carter County | 143 | 0 | $88k | – |
| 59312 | Angela | Garfield County | 29 | 0 | $83k | – |
| 59313 | Baker | Fallon County | 2,111 | 2 | $78k | $232k |
| 59314 | Biddle | Powder River County | 155 | 0 | $92k | – |
| 59315 | Bloomfield | Dawson County | 104 | 0 | $69k | $194k |
| 59316 | Boyes | Powder River County | 15 | 0 | $49k | – |
| 59317 | Broadus | Powder River County | 1,108 | 1 | $71k | $197k |
| 59318 | Brusett | Garfield County | 148 | 0 | $59k | $208k |
| 59319 | Capitol | Carter County | 40 | 0 | – | – |
| 59322 | Cohagen | Garfield County | 132 | 0 | $51k | $167k |
| 59323 | Colstrip | Rosebud County | 2,101 | 39 | $83k | $195k |
| 59324 | Ekalaka | Carter County | 777 | 1 | $57k | $176k |
| 59326 | Fallon | Prairie County | 233 | 1 | – | $220k |
| 59327 | Forsyth | Rosebud County | 2,610 | 1 | $53k | $234k |
| 59330 | Glendive | Dawson County | 8,133 | 8 | $71k | $186k |
| 59332 | Hammond | Carter County | 140 | 0 | $32k | – |
| 59333 | Hathaway | Rosebud County | 10 | 1 | – | – |
| 59336 | Ismay | Custer County | 220 | 0 | $64k | $293k |
| 59337 | Jordan | Garfield County | 653 | 0 | $75k | $158k |
| 59338 | Kinsey | Custer County | 136 | 2 | $69k | $337k |
| 59339 | Lindsay | Dawson County | 208 | 1 | $89k | $228k |
| 59341 | Mildred | Prairie County | PO Box or unique | – | – | – |
| 59343 | Olive | Powder River County | 21 | 0 | – | – |
| 59344 | Plevna | Fallon County | 406 | 1 | $111k | $288k |
| 59345 | Powderville | Custer County | 35 | 0 | $68k | $225k |
| 59347 | Rosebud | Rosebud County | 323 | 0 | $57k | $68k |
| 59349 | Terry | Prairie County | 1,025 | 1 | $63k | $158k |
| 59351 | Volborg | Powder River County | 202 | 0 | – | $118k |
| 59353 | Wibaux | Wibaux County | 1,204 | 1 | $68k | $99k |
| 59354 | Willard | Fallon County | 258 | 5 | $64k | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.