Grass Range Montana ZIP Codes
Grass Range holds a single ZIP code.
Every ZIP code in Grass Range
| ZIP code | County |
|---|---|
| 59032 | Fergus County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Grass Range codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Grass Range. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Grass Range ZIP code begins 590. Those first three digits identify the sectional center facility that processes mail for this part of Montana. Statewide that range covers 75 ZIP codes, so Grass Range accounts for 1% of it.
Every Montana ZIP prefix and the region it covers →
Area codes covering Grass Range
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Grass Range occupies.
Grass Range Montana area codes in full →
Where Grass Range's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Grass Range
| City | Distance | ZIP codes |
|---|---|---|
| Winnett Montana ZIP codes | 22 mi | 1 ZIP code |
| Lewistown Montana ZIP codes | 31 mi | 1 ZIP code |
| Roundup Montana ZIP codes | 42 mi | 2 ZIP codes |
| Moore Montana ZIP codes | 42 mi | 1 ZIP code |
| Winifred Montana ZIP codes | 46 mi | 1 ZIP code |
| Hobson Montana ZIP codes | 51 mi | 1 ZIP code |
| Judith Gap Montana ZIP codes | 51 mi | 1 ZIP code |
| Lavina Montana ZIP codes | 51 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.