ZIP code profile · 2024 county data

ZIP Code 61277

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

Data updated 2026-08-24

207
Property rate /100K (county)
2,978
Population (ZIP)
20
Violent rate /100K (county)

Is ZIP code 61277 safe? Honest data snapshot

ZIP code 61277 sits within Whiteside County, IL. 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.

Whiteside County reported a violent-crime rate of 20 per 100,000 residents and a property-crime rate of 207 per 100,000 in 2024, drawing on county-level agency submissions.

Based on just 11 reported violent incidents across a county population of 55,691, 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 61277 carries a Census-reported population of 2,978, ranking #5 of 12 ZIPs in Whiteside County, spread across 133.69 square miles (about 22 people per square mile). For a full breakdown of Whiteside County's crime categories and year-over-year trend, see the Whiteside County crime page linked below.

ZIP 61277 has no FBI-native crime rate (postal codes are not police jurisdictions). The property-led county proxy above is from Whiteside County agency submissions; see methodology for the ZCTA plurality map. Methodology.

ZIP 61277 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
$77,727
Median age
46.6 years
Owner-occupied homes
83%
Occupied homes
1,126

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

Whiteside County UCR book ZIP 61277 inherits

ZIP 61277 itself is about 22 people per Census sq mi across 133.7 sq mi (2,978 residents), a postal settlement fact independent of the county UCR proxy.

ZIP 61277 accounts for roughly 5.3% of the county reporting population (2,978 of 55,691).

Whiteside County leans on burglary at 48% of reported offenses (mix index 3,335). ZIP 61277 has no separate FBI offense book.

Whiteside County 2024 vs 2023: property counts +42% vs 2023. Year-over-year moves are county agency submissions, still not ZIP-native.

Whiteside 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 61277

Similar county violent rate (~20/100K)

Similar Census population (~2,978)

County detail: Whiteside County · State atlas: Illinois

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.