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County ZIP codes · Montana · FIPS 30091

Sheridan County, MT ZIP Codes

Sheridan County, Montana has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 10 of the residential ones lie mainly in Sheridan County and 1 mainly in a neighboring county; 4 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Sheridan County?

59211 · Antelope: –59219 · Dagmar: $109k59226 · Froid: $66k59242 · Homestead: $129k59247 · Medicine Lake: $74k59252 · Outlook: $66k59254 · Plentywood: $69k59256 · Raymond: $37k59257 · Redstone: –59258 · Reserve: $149k59275 · Westby: $49k592265925459275592585921959247592525925759242592115925659211 · Antelope: –59219 · Dagmar: $109k59226 · Froid: $66k59242 · Homestead: $129k59247 · Medicine Lake: $74k59252 · Outlook: $66k59254 · Plentywood: $69k59256 · Raymond: $37k59257 · Redstone: –59258 · Reserve: $149k59275 · Westby: $49k592265925459275592585921959247592525925759242592115925659211 · Antelope: –59219 · Dagmar: $109k59226 · Froid: $66k59242 · Homestead: $129k59247 · Medicine Lake: $74k59252 · Outlook: $66k59254 · Plentywood: $69k59256 · Raymond: $37k59257 · Redstone: –59258 · Reserve: $149k59275 · Westby: $49k5922659254592755925859219592475925259257592425921159256
The residential ZIP codes of Sheridan 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).

All 11 residential ZIP codes in Sheridan County

10 ZIP codes lie mainly in Sheridan County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Sheridan County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
59254 Plentywood 1,822 7 $69k $164k 100%
59275 Westby 436 1 $49k $83k 76%
59247 Medicine Lake 310 2 $74k $110k 100%
59211 Antelope 298 3 – – 100%
59256 Raymond 258 3 $37k $81k 100%
59258 Reserve 184 1 $149k $158k 64%
59219 Dagmar 144 1 $109k $110k 100%
59257 Redstone 132 1 – – 100%
59252 Outlook 70 0 $66k $216k 100%
59242 Homestead 55 1 $129k $154k 58%

Partly in Sheridan County

Residential ZIP codes mainly in another county that reach at least 1% into Sheridan County, by their share here
In this county
59226 Froid 644 2 $66k $180k 13%

Download the 11 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?

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

Share of each ZIP code's land in Sheridan County and in the neighboring counties
ZIPIn SheridanElsewhere
5922613%Roosevelt County 87%
5927576%Divide County 24%
5925864%Roosevelt County 36%
5924258%Roosevelt County 42%

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

Which first three digits do Sheridan 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 Sheridan County starts with 592.

Three-digit prefixes of Sheridan 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 Sheridan County's
PrefixSectional centerHereAll codes
592 Billings, MT (SCF 590) 11 41

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