ZIP code profile · 2024 county data

ZIP Code 84631

Millard County, Utah: Census demographics for this ZIP plus the containing county's FBI UCR crime rate.

Data updated 2026-08-24

1,195
Property rate /100K (county)
2,986
Population (ZIP)
231
Violent rate /100K (county)

Is ZIP code 84631 safe? Honest data snapshot

ZIP code 84631 sits within Millard County, UT, a county whose reported crime runs below the national average (see the county-level FBI figures below, not a ZIP-specific calculation).

Millard County's reported crime sits somewhat below the national average: 231 violent and 1,195 property incidents per 100,000 residents in 2024.

ZIP 84631 carries a Census-reported population of 2,986, ranking #2 of 11 ZIPs in Millard County, spread across 126.48 square miles (about 24 people per square mile). For a full breakdown of Millard County's crime categories and year-over-year trend, see the Millard County crime page linked below.

ZIP 84631 has no FBI-native crime rate (postal codes are not police jurisdictions). The property-led county proxy above is from Millard County agency submissions; see methodology for the ZCTA plurality map. Methodology.

ZIP 84631 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
$75,278
Median age
35.7 years
Owner-occupied homes
79%
Occupied homes
870

Source: U.S. Census Bureau, ACS 2022 5-year ZCTA estimates (income, age, and occupied housing tenure).

How useful is the county proxy for ZIP 84631?

Within the participating-agency records for Millard County, reported violent and property crime rates both sit below their U.S. benchmarks: violent crime is 34% below and property crime is 30% below. The two submitted measures point in the same direction, but they do not establish complete county coverage or turn the result into a ZIP-level rating for 84631. 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.

84631 is comparatively spread out at about 24 people per square mile. That settlement pattern may differ sharply from the county's population centers, another reason to use the county rates as regional context rather than a local estimate.

Millard County UCR book ZIP 84631 inherits

ZIP 84631 itself is about 24 people per Census sq mi across 126.5 sq mi (2,986 residents), a postal settlement fact independent of the county UCR proxy.

ZIP 84631's 2,986 residents are about 23% of the 2024 county reporting population (12,975), a large postal share of a county-wide rate.

Millard County's 2024 UCR book concentrates in larceny-theft (61% of 185 offenses; mix index 4,165). ZIP 84631 inherits that county mix, not a postal-native split.

Millard County 2024 vs 2023: violent counts +20% vs 2023; property counts +31% vs 2023. Year-over-year moves are county agency submissions, still not ZIP-native.

Millard 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.

Nationwide peers for ZIP 84631

Similar county violent rate (~231/100K)

Similar Census population (~2,986)

County detail: Millard County · State atlas: Utah

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.