ZIP code · Joplin · Montana · United States
ZIP code 59531 — Joplin
ZIP code 59531 serves Joplin, Montana.
- Postal code
- 59531Single source Value from one source, not cross-checked.
- City
- Joplin
- County
- Liberty FIPS 30051
- State
- Montana
- Country
- United States
- Coordinates
- 48.6498, -110.7914 — precision precise (locality)
View on OpenStreetMap - Population
- 409 (ZCTA, ACS 5-year)
- Population density
- 2 / sq mi
- Land area
- 267.7 sq mi (693.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $52,321
- Per-capita income
- $38,602
- Median age
- 31.1
- Households
- 135
- Housing units
- 193
- Median home value
- $102,400
- Congressional district
- MT-2 (119th Congress)
- USDA hardiness zone
- 4a (-30 to -25 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Denver (UTC−7 / UTC−6 DST)
- Area code
- 406Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 59531 with another ZIP · ZIPs within 25 miles · distance from 59531
Map of ZIP code 59531
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 8°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 29 | 33 | 43 | 55 | 66 | 73 | 84 | 82 | 71 | 56 | 41 | 31 |
| Avg low °F | 8 | 10 | 19 | 29 | 38 | 46 | 52 | 50 | 41 | 30 | 19 | 10 |
| Precip in | 0.4 | 0.3 | 0.3 | 0.8 | 1.6 | 2.5 | 1.3 | 1.1 | 1.1 | 0.7 | 0.5 | 0.3 |
NOAA 1991–2020 climate normals from the nearest station: JOPLIN (6.3 mi) · NOAA NCEI
Places in ZIP 59531
- 1 schools
- 1 post offices
- 2 places of worship
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page