ZIP codes in Powell County
8 ZIPs touch Powell County, Montana. The blue dashed line is the county border; orange ZIPs reach into it.
8
ZIP codes
2
cross the county line
9,016
people in these ZIPs
56
counties in MT
Most people
Powell County ZIP list
More counties in Montana
- Musselshell County6
- Park County11
- Petroleum County4
- Phillips County8
- Pondera County6
- Powder River County10
- Prairie County8
- Ravalli County10
- Richland County9
- Roosevelt County10
- Rosebud County12
- Sanders County11
Questions people actually ask
How many ZIP codes are in Powell County, Montana?
8 ZIP codes reach into Powell County. 2 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Powell County has the most people?
59722 (Deer Lodge) has about 5,732 residents, the most of any ZIP touching Powell County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Powell County and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Powell County. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from