Saint Marie, MT · standard
ZIP Code 59231
Valley County, Montana - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 264
- 51/sq mi Moderate-density area
- $38,971
- Median income Below-median income area
- $18,800
- Median home value Below-median home value
- 23.1%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Saint Marie pairs one of the lowest household incomes in the country with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- 5th pct
- household income, US ZIPs
- Lowest
- home value, US ZIPs
- 51
- people per sq mi
- 89%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 59231 against every reporting US ZIP.
ZIP code 59231 is a sparsely populated ZIP (a standard USPS delivery area) in Saint Marie, Valley County, Montana, home to just 264 residents across 5.2 square miles, a density of 51 people per square mile, in the Denver time zone.
ZIP 59231 sits on the lower end of the income spectrum: median household income is $38,971 (44% below the average Montana ZIP), while per-capita income is $16,911. Economic pressure is pronounced: 23.9% of residents are below the poverty line and unemployment is 18.9%. Home values sit below the statewide ZIP benchmark: the median is $18,800 (94% below the average Montana ZIP); owner occupancy is 89.1%.
Educational attainment sits below the national norm: 23.1% of adults hold a bachelor's degree or higher, the median age is 37.9, and the average commute is -. No nearby ZIP peer set is available for this delivery area, so the Montana and national benchmarks above are the appropriate context for 59231.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 59231, Saint Marie, MT · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
264
Population
5.2
Area (sq mi)
51
People / sq mi
Denver
Time Zone
standard
ZIP Type
Who lives in ZIP 59231?
37.9
Median Age
30.1%
Male
69.9%
Female
0.0%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$38,971
Median Household Income
-44% vs state ZIP avg
$16,911
Per Capita Income
23.9%
Poverty Rate
18.9%
Unemployment Rate
How ZIP 59231 ranks among Montana ZIPs
Saint Marie, MT household income vs. every Montana ZIP code
Median household income among 321 reporting Montana ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$38,971 5th percentile higher than 5% of 321 Montana ZIPs
Each bar is a $20K-wide band; taller bars hold more Montana ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
688housing units
688
Total Housing Units
92
Occupied Units
596
Vacant Units
3.33
Avg Household Size
Occupancy Type
$18,800
Median Home Value
-94% vs state ZIP avg
1964
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 3 business establishments in ZIP 59231, employing approximately 11 people with a combined annual payroll of $692,000.
3
Businesses
11
Employees
$692K
Annual Payroll
0
Industry Sectors
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 59231, both outside MT so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Valley County
Related Areas
Frequently Asked Questions
What county is ZIP code 59231 in?
ZIP code 59231 (Saint Marie) is located in Valley County, Montana. Valley County contains multiple ZIP codes, see the full list at /counties/valley-mt.
What is the population of ZIP code 59231?
ZIP code 59231 in Saint Marie, MT has a population of 264 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 59231?
The median household income in ZIP 59231 is $38,971, which is 49% below the national average of $76,288.
What is the average home value in ZIP 59231?
The median home value in ZIP 59231 is $18,800, which is 93% below the national average of $278,155.
What is the demographic makeup of ZIP 59231?
The largest racial group in ZIP 59231 is White at 55.9%.
How many businesses are in ZIP code 59231?
ZIP code 59231 has 3 business establishments employing approximately 11 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 59231?
In ZIP code 59231, 43.7% of residents aged 25+ have a high school diploma or higher, and 23.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 59231?
In ZIP code 59231, approximately 89.1% of occupied housing units are owner-occupied and 10.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 59231?
The poverty rate in ZIP code 59231 is 23.9% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
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What to do with ZIP 59231's numbers, next.
- See how ZIP 59231 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Saint Marie, MT ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.