ZIP codes in Deer Lodge County
5 ZIPs touch Deer Lodge County, Montana. The blue dashed line is the county border; orange ZIPs reach into it.
5
ZIP codes
4
cross the county line
50,037
people in these ZIPs
56
counties in MT
Most people
Deer Lodge County ZIP list
More counties in Montana
- Carter County8
- Cascade County21
- Chouteau County13
- Custer County7
- Daniels County5
- Dawson County8
- Fallon County5
- Fergus County12
- Flathead County19
- Gallatin County14
- Garfield County9
- Glacier County5
Questions people actually ask
How many ZIP codes are in Deer Lodge County, Montana?
5 ZIP codes reach into Deer Lodge County. 4 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Deer Lodge County has the most people?
59701 (Butte) has about 34,232 residents, the most of any ZIP touching Deer Lodge County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Deer Lodge 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 Deer Lodge 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.
Keep exploring
Updated 2026-11-10 · Where the data comes from