Residential delivery area · Montana
ZIP Code 59858: Philipsburg, MT
ZIP code 59858 uses the postal name Philipsburg, Montana and lies entirely in Granite County (Census 2020 ZIP-county file). About 1,500 people live there (Census Bureau, ACS 2020-2024). Median household income is $56,719 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Philipsburg; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Philipsburg · its only residential ZIP
- County
- Granite County
- Census places
- Philipsburg
- House district
- MT-1 119th Congress
- State
- Montana
- Time zone
- Mountain
- Land area
- 880.2 sq mi · 2 people per sq mi
Where is ZIP code 59858?
59858 centers on 46.286°, -113.467° and covers 880.2 square miles of land plus 1.3 of water. It borders 10 ZIP codes: 59837, 59711, 59828, 59825, 59832, 59733, 59840, 59871, 59870, 59722.
The map draws ZIP code areas only. For the streets inside 59858, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 59858 compare with the rest of Granite County?
| Measure | 59858 | In Granite County | In MT |
|---|---|---|---|
| People (ACS 2020-2024) | 1,494 | 3rd of 5 | 109th of 369 |
| Median household income | $57k | not ranked | not ranked |
| Median home value | $380k | 1st of 3 | 47th of 120 |
59858's median household income is not ranked: its 90% margin of error (±$28,683) is more than a quarter of the figure ($56,719). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 5% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 59858?
The 2020 Census counted 1,679 people in 59858; the ACS, which samples households over 2020-2024, estimates 1,494. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 1,494±184 (90% margin)
- 2020 Census count
- 1,679
- Households
- 673
- Median age
- 56.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 59858?
Of the 1,494 people the ACS estimates in 59858, 10.6% are under 18 and 36.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (84.9%).
- Under 1810.6%
- 18 to 6453.3%
- 65 and older36.1%
- White, not Hispanic84.9%
- Other or two or more7.2%
- Hispanic or Latino5.5%
- Asian, not Hispanic2.1%
- Black, not Hispanic0.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 59858 earn?
Median household income is $56,719 (ACS 2020-2024).
- Median household income
- $56,719±$28,683
- Income per person
- $36,155
- Below the poverty line
- 13.5%
- Unemployed (of the labor force)
- 7.8%
- Adults 25+ with a bachelor's degree
- 45.5%
- Adjusted gross income per tax return, 2022
- $80,501850 returns; wages 47% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 59858?
FHFA's house price index for 59858, built from repeat sales and appraisals of the same homes, rose 147% from 2015 to 2025 and rose 73% from 2020 to 2025, and moved −3.0% in 2025.
- Median home value (owners' estimate)
- $380,000
- Median gross rent
- –
- Homes owned by their occupants
- 71.3%
- Housing units
- 1,021
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 59858?
84 business establishments had a location in this ZIP code in 2023, 14 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade16
- Accommodation and food services15
- Construction13
- Health care and social assistance7
- Professional, scientific, and technical services6
- Real estate and rental and leasing5
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 59858?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 59837 | Hall | 639 | $51k | 19.3 mi |
| 59711 | Anaconda | 9,529 | $58k | 20.4 mi |
| 59828 | Corvallis | 5,827 | $80k | 23.6 mi |
| 59825 | Clinton | 2,434 | $90k | 24.3 mi |
| 59832 | Drummond | 962 | $64k | 29.7 mi |
| 59733 | Gold Creek | 196 | $66k | 30.2 mi |
| 59840 | Hamilton | 15,679 | $62k | 31.6 mi |
| 59871 | Sula | 289 | $32k | 31.9 mi |
| 59870 | Stevensville | 12,506 | $80k | 32.6 mi |
| 59722 | Deer Lodge | 5,732 | $62k | 34.4 mi |
| 59762 | Wise River | 231 | $61k | 24.2 mi (near) |
| 59756 | Warm Springs | 313 | – | 31.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.