US ZIP Code
59531

Joplin, MT

Liberty County  ·  Montana

● Active
👥 409 Population ↑ 28% since 2019
💰 $52,321 Median HH Income
▼ 31% below avg ↑ 9% since 2019
🎂 31.1 Median Age ↓ 6% since 2019
🏠 $102,400 Median Home Value
▼ 63% below avg ↑ 33% since 2019
🎓 42.0% College Grads
▲ 8% above avg
📊 0.0% Unemployment
▼ 100% below avg
ZIP Code Details
ZIP Code59531
CityJoplin
StateMontana (MT)
CountyLiberty County
Area Code406
Elevation3,447 ft
Latitude48.776638
Longitude-110.794634
TimezoneDenver (DST)
FIPS30051
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 48.9% (200) Female 51.1% (209) ♀

Race & Ethnicity

White: 98%Race
White98.0%

Age Breakdown

Under 5
10%
5–17
36%
18–24
4%
25–44
33%
45–64
11%
65+
4%

Key Indicators

Median Age31.1 yrs ↓ 6% since 2019
Avg Household Size3.03
Below Poverty22.3% ▲ 123% above avg
College Grads42.0% ▲ 8% above avg
Unemployment0.0% ▼ 100% below avg
No HS Diploma4 (2.2%)
HS Graduate24 (13.3%)
Some College42 (23.2%)
Associates35 (19.3%)
Bachelors22 (12.2%)
Graduate Degree54 (29.8%)

Education

No HS: 2.2%HS Grad: 13.3%Some College: 23.2%Associates: 19.3%Bachelors: 12.2%Graduate: 29.8%Edu
No HS2.2%
HS Grad13.3%
Some College23.2%
Associates19.3%
Bachelors12.2%
Graduate29.8%
Housing & Income

Housing Tenure

Owner: 86.7%Renter: 13.3%Tenure
Owner86.7%
Renter13.3%

Home Value Distribution

Under $50k
27%
$50k–100k
21%
$100k–150k
22%
$150k–200k
12%
$200k–300k
16%
$300k–500k
2%

Financials

Median HH Income$52,321 ▼ 31% below avg ↑ 9% since 2019
Median Home Value$102,400 ▼ 63% below avg ↑ 33% since 2019
Home/Income Ratio2.0x (nat avg ~3.5x)
Total Units193
Vacant Units58
Avg HH Size3.03

Income Distribution

Under $25k
11%
$25k–50k
30%
$50k–75k
21%
$75k–100k
6%
$100k–150k
23%
Over $200k
9%
Employment & Commute

How People Get to Work

Drove Alone
78%
Work From Home
22%

Commute Time

Under 15 min
6%
15–30 min
74%
30–45 min
11%
Over 45 min
9%
Housing Stock

Year Built

Before 1940
2%
1940s–1950s
19%
1960s–1970s
15%
1980s–1990s
9%
2000+
55%

Summary

Total Units193
Vacant58
Owner Occupied86.7%
Renter Occupied13.3%
Avg HH Size3.03
Frequently Asked Questions
ZIP code 59531 is in Joplin, MT, in Liberty County.
ZIP code 59531 is located in Montana (MT).
ZIP code 59531 is in Liberty County, MT.
ZIP 59531 observes the Denver timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 59531 is 409 people (ACS 2023).
The median household income in ZIP code 59531 is $52,321 (ACS 2023).
The median home value in ZIP 59531 is $102,400 (ACS 2023).
About ZIP Code 59531

ZIP code 59531 is located in Joplin, Montana, within Liberty County. With a population of 409, this is a sparsely populated ZIP code with a relatively young community — the median age is 31.1 years. Economically, 59531 is a working-class ZIP code: the median household income of $52,321 is below the national average.

Real estate in ZIP code 59531 represents one of the more affordable housing markets in the country. The median home value of $102,400 is well below the national average. Homeownership is strong here — 86.7% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 33% since 2019.

The population of 59531 is primarily White (98.04%). Residents are well-educated — 42.0% hold a bachelor's degree or higher, which is near the national average. Poverty affects a significant share of residents at 22.3%. Household income has grown by 9% since 2019.

About 21% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 74%.

Overall, ZIP code 59531 in Joplin, MT is characterized as working-class, well-educated, a relatively young community, and predominantly owner-occupied. With 409 residents, a median household income of $52,321, and a median home value of $102,400, it offers a clear picture of life in this part of Montana.