ZIP code profile · 2024 county data

ZIP Code 98331

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

Data updated 2026-08-24

558
Property rate /100K (county)
5,671
Population (ZIP)
70
Violent rate /100K (county)

Is ZIP code 98331 safe? Honest data snapshot

ZIP code 98331 sits within Jefferson County, WA. 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 70 per 100,000 residents and a property-crime rate of 558 per 100,000 in 2024, drawing on county-level agency submissions.

Based on just 23 reported violent incidents across a county population of 32,977, this count is too low to support a reliable per-100K rate comparison. It may reflect a genuinely low-crime county, or it may reflect incomplete agency-level reporting to the FBI UCR Program for this county and year, small county-level counts are common in FBI Table 10 and should be treated as a data point, not a precise safety ranking.

ZIP 98331 carries a Census-reported population of 5,671, ranking #2 of 8 ZIPs in Jefferson County, spread across 929.86 square miles (about 6 people per square mile). For a full breakdown of Jefferson County's crime categories and year-over-year trend, see the Jefferson County crime page linked below.

ZIP 98331 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 98331 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
$43,597
Median age
38.7 years
Owner-occupied homes
66%
Occupied homes
2,179

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

Jefferson County UCR book ZIP 98331 inherits

ZIP 98331 itself is about 6 people per Census sq mi across 929.9 sq mi (5,671 residents), a postal settlement fact independent of the county UCR proxy.

ZIP 98331's 5,671 residents are about 17.2% of the 2024 county reporting population (32,977), a large postal share of a county-wide rate.

Jefferson County's 2024 UCR book concentrates in larceny-theft (60% of 207 offenses; mix index 4,212). ZIP 98331 inherits that county mix, not a postal-native split.

Jefferson County 2024 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.

Nationwide peers for ZIP 98331

Similar county violent rate (~70/100K)

Similar Census population (~5,671)

County detail: Jefferson County · State atlas: Washington

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.