ZIP code profile · 2024 county data

ZIP Code 66503

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

Data updated 2026-08-24

1,399
Property rate /100K (county)
16,393
Population (ZIP)
275
Violent rate /100K (county)

Is ZIP code 66503 safe? Honest data snapshot

ZIP code 66503 sits within Riley County, KS. 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.

Riley County reported a violent-crime rate of 275 per 100,000 residents and a property-crime rate of 1,399 per 100,000 in 2024, drawing on county-level agency submissions.

ZIP 66503 carries a Census-reported population of 16,393, ranking #3 of 8 ZIPs in Riley County, spread across 83.2 square miles (about 197 people per square mile). For a full breakdown of Riley County's crime categories and year-over-year trend, see the Riley County crime page linked below.

ZIP 66503 has no FBI-native crime rate (postal codes are not police jurisdictions). The property-led county proxy above is from Riley County agency submissions; see methodology for the ZCTA plurality map. Methodology.

ZIP 66503 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
$96,327
Median age
38.3 years
Owner-occupied homes
62%
Occupied homes
6,696

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 66503?

Within the participating-agency records for Riley County, reported violent and property crime rates both sit below their U.S. benchmarks: violent crime is 22% below and property crime is 18% 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 66503. 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.

66503 is comparatively spread out at about 197 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.

Riley County UCR book ZIP 66503 inherits

ZIP 66503 itself is about 197 people per Census sq mi across 83.2 sq mi (16,393 residents), a postal settlement fact independent of the county UCR proxy.

ZIP 66503's 16,393 residents are about 22.8% of the 2024 county reporting population (71,959), a large postal share of a county-wide rate.

Riley County's 2024 UCR book concentrates in larceny-theft (68% of 1,205 offenses; mix index 4,908). ZIP 66503 inherits that county mix, not a postal-native split.

Riley 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 66503

Similar county violent rate (~275/100K)

Similar Census population (~16,393)

County detail: Riley County · State atlas: Kansas

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.