ZIP code profile · 2024 county data
ZIP Code 66554
Riley County, Kansas: Census demographics for this ZIP plus the containing county's FBI UCR crime rate.
Data updated 2026-09-05
- 1,399
- Property rate /100K (county)
- 650
- Population (ZIP)
- 275
- Violent rate /100K (county)
Is ZIP code 66554 safe? Honest data snapshot
ZIP code 66554 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.
With 650 residents, ZIP 66554 is among the smaller ZIPs in Riley County (#8 of 8 by population), spread across 100.88 square miles (6/sq mi). For a full breakdown of Riley County's crime categories and year-over-year trend, see the Riley County crime page linked below.
ZIP 66554 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 66554 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
- $87,898
- Median age
- 54.6 years
- Owner-occupied homes
- 93%
- Occupied homes
- 225
- Median home value
- $235,900
- Bachelor's degree or higher
- 50.6%
- Poverty rate
- 3.2%
- Unemployment rate
- 1.0%
ZIP 66554's median home value of $235,900 sits higher than 87% of the 501 KS 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 66554?
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 66554. 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, 66554 is among the smaller ZIPs by population (#8 of 8). 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.
Riley County UCR book ZIP 66554 inherits
ZIP 66554 itself is about 6 people per Census sq mi across 100.9 sq mi (650 residents), a postal settlement fact independent of the county UCR proxy.
ZIP 66554 is about 0.9% of the county reporting population (650 of 71,959), so most of the denominator and submitted incidents sit outside this postal code.
Riley County's 2024 UCR book concentrates in larceny-theft (68% of 1,205 offenses; mix index 4,908). ZIP 66554 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.
Read with ZIP 66554
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.