ZIP code profile · 2024 county data
ZIP Code 58031
Cass County, North Dakota: Census demographics for this ZIP plus the containing county's FBI UCR crime rate.
Data updated 2026-09-05
- 399
- Population (ZIP)
- 7
- Violent rate /100K (county)
- 83
- Property rate /100K (county)
Is ZIP code 58031 safe? Honest data snapshot
ZIP code 58031 sits within Cass County, ND, in which law-enforcement agencies did not report complete 2024 data to the FBI UCR Program. The county figures below cover only the agencies that submitted, so they are not a measure of crime in this area and no comparison to the national average is drawn from them.
ZIP 58031 carries a Census-reported population of 399, ranking #20 of 25 ZIPs in Cass County, spread across 146.36 square miles (about 3 people per square mile). For a full breakdown of Cass County's crime categories and year-over-year trend, see the Cass County crime page linked below.
ZIP 58031 has no FBI-native crime rate (postal codes are not police jurisdictions). Figures above use the Cass County proxy where reported; see methodology for the ZCTA plurality map. Methodology.
ZIP 58031 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
- $89,167
- Median age
- 35.7 years
- Owner-occupied homes
- 95%
- Occupied homes
- 136
- Median home value
- $85,000
- Bachelor's degree or higher
- 13.1%
- Poverty rate
- 29.8%
- Unemployment rate
- 0.5%
ZIP 58031's median home value of $85,000 sits higher than 14% of the 252 ND 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).
ZIP 58031 settlement vs Cass County
ZIP 58031 itself is about 3 people per Census sq mi across 146.4 sq mi (399 residents), a postal settlement fact independent of the county UCR proxy.
ZIP 58031 is about 0.2% of the county reporting population (399 of 184,525), so most of the denominator and submitted incidents sit outside this postal code.
Cass County's 2024 UCR book concentrates in larceny-theft (64% of 165 offenses; mix index 4,641). ZIP 58031 inherits that county mix, not a postal-native split.
Settlement lines use Census ZCTA figures only; incomplete county agency coverage blocks any UCR mix or rate desk for this ZIP.
Read with ZIP 58031
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.