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County ZIP codes · Montana · FIPS 30077

Powell County, MT ZIP Codes

Powell County, Montana has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Powell County and 1 mainly in a neighboring county; 2 cross the county line. Median household income ranges from $51,490 in 59868 (Seeley Lake) to $62,230 in 59722 (Deer Lodge) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Powell County?

59713 · Avon: $99k59722 · Deer Lodge: $62k59728 · Elliston: $79k59731 · Garrison: $90k59733 · Gold Creek: $66k59843 · Helmville: $88k59854 · Ovando: $74k59868 · Seeley Lake: $52k598545984359722598685971359728597335973159713 · Avon: $99k59722 · Deer Lodge: $62k59728 · Elliston: $79k59731 · Garrison: $90k59733 · Gold Creek: $66k59843 · Helmville: $88k59854 · Ovando: $74k59868 · Seeley Lake: $52k5985459843597225986859713597285973359713 · Avon: $99k59722 · Deer Lodge: $62k59728 · Elliston: $79k59731 · Garrison: $90k59733 · Gold Creek: $66k59843 · Helmville: $88k59854 · Ovando: $74k59868 · Seeley Lake: $52k598545984359722598685971359728
The residential ZIP codes of Powell 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 8 postal town names: Deer Lodge, Seeley Lake, Elliston, Avon, Helmville, Garrison, Gold Creek, Ovando.

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

All 8 residential ZIP codes in Powell County

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

Residential ZIP codes mainly in Powell County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
59722 Deer Lodge 5,732 15 $62k $279k 86%
59728 Elliston 394 2 $79k $421k 100%
59713 Avon 253 1 $99k $350k 100%
59843 Helmville 251 1 $88k $297k 100%
59731 Garrison 198 2 $90k $566k 100%
59733 Gold Creek 196 1 $66k $403k 100%
59854 Ovando 195 0 $74k $583k 100%

Partly in Powell County

Residential ZIP codes mainly in another county that reach at least 1% into Powell County, by their share here
In this county
59868 Seeley Lake 1,797 7 $52k $392k 4%

Download the 8 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?

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

Share of each ZIP code's land in Powell County and in the neighboring counties
ZIPIn PowellElsewhere
5972286%Deer Lodge County 14%
598684%Missoula County 96%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Powell County's ZIP codes use 2 prefixes: 597 and 598.

Three-digit prefixes of Powell 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 Powell County's
PrefixSectional centerHereAll codes
597 Billings, MT (SCF 590) 5 49
598 Missoula, MT (SCF 598) 3 53

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