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County ZIP codes · Montana · FIPS 30087

Rosebud County, MT ZIP Codes

Rosebud County, Montana has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 12 residential and 1 for PO boxes or a single organization. 9 of the residential ones lie mainly in Rosebud County and 3 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $44,833 in 59003 (Ashland) to $71,332 in 59301 (Miles City) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Rosebud County?

59003 · Ashland: $45k59012 · Birney: $56k59039 · Ingomar: –59043 · Lame Deer: $29k59054 · Melstone: $54k59062 · Otter: $29k59083 · Sumatra: –59301 · Miles City: $71k59323 · Colstrip: $83k59327 · Forsyth: $53k59333 · Hathaway: –59347 · Rosebud: $57k593015932759347590035905459062590395904359012590835932359003 · Ashland: $45k59012 · Birney: $56k59039 · Ingomar: –59043 · Lame Deer: $29k59054 · Melstone: $54k59062 · Otter: $29k59083 · Sumatra: –59301 · Miles City: $71k59323 · Colstrip: $83k59327 · Forsyth: $53k59333 · Hathaway: –59347 · Rosebud: $57k59301593275934759003590545906259039590435901259003 · Ashland: $45k59012 · Birney: $56k59039 · Ingomar: –59043 · Lame Deer: $29k59054 · Melstone: $54k59062 · Otter: $29k59083 · Sumatra: –59301 · Miles City: $71k59323 · Colstrip: $83k59327 · Forsyth: $53k59333 · Hathaway: –59347 · Rosebud: $57k593015932759347590035905459062590395904359012
The residential ZIP codes of Rosebud County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024).<$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 12 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 12 residential ZIP codes in Rosebud County

9 ZIP codes lie mainly in Rosebud County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Rosebud County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
59043 Lame Deer 2,727 8 $29k $111k 70%
59327 Forsyth 2,610 1 $53k $234k 100%
59323 Colstrip 2,101 39 $83k $195k 100%
59347 Rosebud 323 0 $57k $68k 92%
59054 Melstone 227 0 $54k $218k 58%
59012 Birney 44 0 $56k – 100%
59039 Ingomar 13 0 – – 100%
59333 Hathaway 10 1 – – 100%
59083 Sumatra 3 0 – – 100%

Partly in Rosebud County

Residential ZIP codes mainly in another county that reach at least 1% into Rosebud County, by their share here
In this county
59003 Ashland 1,334 2 $45k $76k 39%
59062 Otter 51 0 $29k – 31%
59301 Miles City 11,643 4 $71k $218k 10%

Download the 13 ZIP codes as CSV

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?

6 ZIP codes of Rosebud County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Rosebud County and in the neighboring counties
ZIPIn RosebudElsewhere
5930110%Custer County81%; Garfield County5%; Powder River County2%; Prairie County1%
5904370%Big Horn County30%
5900339%Powder River County61%
5934792%Custer County8%
5905458%Musselshell County42%
5906231%Powder River County69%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Rosebud County without a residential area (GeoNames postal codes)
ZIPPostal name
59004Ashland

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Rosebud County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Rosebud County's ZIP codes use 2 prefixes: 590 and 593.

Three-digit prefixes of Rosebud County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Rosebud County's
PrefixSectional centerHereAll codes
590Billings, MT (SCF 590)875
593Billings, MT (SCF 590)531

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.