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County ZIP codes · Montana · FIPS 30095

Stillwater County, MT ZIP Codes

Stillwater County, Montana has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Stillwater County and 2 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $82,692 in 59001 (Absarokee) to $84,591 in 59019 (Columbus) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Stillwater County?

59001 · Absarokee: $83k59015 · Broadview: $70k59019 · Columbus: $85k59028 · Fishtail: $73k59057 · Molt: $81k59061 · Nye: $92k59063 · Park City: $99k59067 · Rapelje: $73k59069 · Reed Point: $73k59074 · Ryegate: $50k59074590695906159067590575901959015590015906359001 · Absarokee: $83k59015 · Broadview: $70k59019 · Columbus: $85k59028 · Fishtail: $73k59057 · Molt: $81k59061 · Nye: $92k59063 · Park City: $99k59067 · Rapelje: $73k59069 · Reed Point: $73k59074 · Ryegate: $50k59074590695906159067590575901959015590015906359001 · Absarokee: $83k59015 · Broadview: $70k59019 · Columbus: $85k59028 · Fishtail: $73k59057 · Molt: $81k59061 · Nye: $92k59063 · Park City: $99k59067 · Rapelje: $73k59069 · Reed Point: $73k59074 · Ryegate: $50k5907459069590615906759057590195901559001
The residential ZIP codes of Stillwater 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 10 postal town names.

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

All 10 residential ZIP codes in Stillwater County

8 ZIP codes lie mainly in Stillwater County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Stillwater County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
59019 Columbus 4,438 14 $85k $398k 98%
59063 Park City 2,070 34 $99k $449k 100%
59001 Absarokee 1,409 10 $83k $359k 94%
59057 Molt 782 3 $81k $468k 68%
59028 Fishtail 496 2 $73k $552k 100%
59069 Reed Point 458 1 $73k $409k 51%
59061 Nye 250 1 $92k $364k 100%
59067 Rapelje 152 1 $73k $460k 100%

Partly in Stillwater County

Residential ZIP codes mainly in another county that reach at least 1% into Stillwater County, by their share here
In this county
59015 Broadview 394 2 $70k $238k 29%
59074 Ryegate 413 1 $50k $169k 7%

Download the 10 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 Stillwater County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Stillwater County and in the neighboring counties
ZIPIn StillwaterElsewhere
5901998%Carbon County 2%
5900194%Carbon County 6%
5905768%Yellowstone County 32%
5906951%Sweet Grass County 49%
590747%Golden Valley County 91%; Wheatland County 2%
5901529%Yellowstone County 52%; Musselshell County 19%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Stillwater County starts with 590.

Three-digit prefixes of Stillwater 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 Stillwater County's
PrefixSectional centerHereAll codes
590 Billings, MT (SCF 590) 10 75

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