ZIP code profile · 2024 county data
ZIP Code 59631
Jefferson County, Montana: Census demographics for this ZIP plus the containing county's FBI UCR crime rate.
Data updated 2026-09-05
- 952
- Property rate /100K (county)
- 371
- Population (ZIP)
- 381
- Violent rate /100K (county)
Is ZIP code 59631 safe? Honest data snapshot
ZIP code 59631 sits within Jefferson County, MT. The figures below are the county's own FBI UCR numbers for 2024, the most accurate available statistic for this location, not a ZIP-specific calculation.
Jefferson County reported a violent-crime rate of 381 per 100,000 residents and a property-crime rate of 952 per 100,000 in 2024, drawing on county-level agency submissions.
With 371 residents, ZIP 59631 is among the smaller ZIPs in Jefferson County (#6 of 6 by population), spread across 156.44 square miles (2/sq mi). For a full breakdown of Jefferson County's crime categories and year-over-year trend, see the Jefferson County crime page linked below.
ZIP 59631 has no FBI-native crime rate (postal codes are not police jurisdictions). The property-led county proxy above is from Jefferson County agency submissions; see methodology for the ZCTA plurality map. Methodology.
ZIP 59631 Census context
These are ZIP/ZCTA demographic estimates, separate from the county-level FBI proxy above. They describe the local settlement, not a crime rate.
- Median household income
- $49,375
- Median age
- 54.7 years
- Owner-occupied homes
- 89%
- Occupied homes
- 165
- Median home value
- $222,600
- Bachelor's degree or higher
- 31.4%
- Poverty rate
- 1.9%
- Unemployment rate
- 0.0%
ZIP 59631's median home value of $222,600 sits higher than 44% of the 307 MT ZIPs with a reported value, roughly mid-range for the state.
Source: U.S. Census Bureau, ACS 2022 5-year ZCTA estimates (income, age, housing tenure, home value, education, and unemployment).
How useful is the county proxy for ZIP 59631?
Participating agencies give Jefferson County a split reported profile: violent crime is 8% above the U.S. benchmark while property crime is 44% below it. A single "high" or "low" label would hide that difference; the submissions neither establish complete county coverage nor identify conditions within ZIP 59631. Both comparisons use the same 2024 county reporting population and FBI-submitted counts, so the two directions are internally comparable for this release, not evidence about a different year.
Within the county, 59631 is among the smaller ZIPs by population (#6 of 6). County-wide counts are especially coarse context for a smaller postal area because most of the denominator and reported incidents may sit elsewhere in the county.
Jefferson County UCR book ZIP 59631 inherits
ZIP 59631 itself is about 2 people per Census sq mi across 156.4 sq mi (371 residents), a postal settlement fact independent of the county UCR proxy.
ZIP 59631 accounts for roughly 3.1% of the county reporting population (371 of 12,085).
Jefferson County leans on larceny-theft at 50% of reported offenses (mix index 3,367). ZIP 59631 has no separate FBI offense book.
Jefferson County 2024 vs 2023: violent counts +44% vs 2023; property counts +21% vs 2023. Year-over-year moves are county agency submissions, still not ZIP-native.
Jefferson County offense mix (2024)
Mix index is HHI × 10,000 on county offense-type shares. Distinct from the per-100K rates in the hero; still county-agency data, not a ZIP-native FBI table.
Read with ZIP 59631
Sources: U.S. Census Bureau (ZIP population, land area, 2020 ZCTA-to-county relationship file, ACS 5-year estimates) and FBI Uniform Crime Reporting (UCR) Program, Crime in the United States (CIUS) Table 10 (county-level crime, attributed via ZIP-to-county crosswalk).
Verify with Census.gov Geography and FBI.gov UCR.
Read our methodology , how this data is sourced, computed, and verified.
Every figure on PlainCrime is rendered directly from FBI Uniform Crime Reporting (UCR) source data, no number is typed in by an editor. This page combines Census ZIP-level figures with a ZIP-to-county crosswalk to attribute FBI UCR crime data honestly, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.