ZIP code profile · 2024 county data
ZIP Code 48027
St. Clair County, Michigan: Census demographics for this ZIP plus the containing county's FBI UCR crime rate.
Data updated 2026-08-24
- 261
- Property rate /100K (county)
- 3,187
- Population (ZIP)
- 100
- Violent rate /100K (county)
Is ZIP code 48027 safe? Honest data snapshot
ZIP code 48027 sits within St. Clair County, MI, a county whose reported crime runs below the national average (see the county-level FBI figures below, not a ZIP-specific calculation).
Reported crime here runs well below the national average: 100 violent incidents and 261 property incidents per 100,000 residents in 2024, per county-level agency submissions.
ZIP 48027 carries a Census-reported population of 3,187, ranking #17 of 21 ZIPs in St. Clair County, spread across 37.37 square miles (about 85 people per square mile). For a full breakdown of St. Clair County's crime categories and year-over-year trend, see the St. Clair County crime page linked below.
ZIP 48027 has no FBI-native crime rate (postal codes are not police jurisdictions). The property-led county proxy above is from St. Clair County agency submissions; see methodology for the ZCTA plurality map. Methodology.
ZIP 48027 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
- $80,852
- Median age
- 43.3 years
- Owner-occupied homes
- 92%
- Occupied homes
- 1,183
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 48027?
Within the participating-agency records for St. Clair County, reported violent and property crime rates both sit below their U.S. benchmarks: violent crime is 72% below and property crime is 85% 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 48027. 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.
48027 is comparatively spread out at about 85 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.
St. Clair County UCR book ZIP 48027 inherits
ZIP 48027 itself is about 85 people per Census sq mi across 37.4 sq mi (3,187 residents), a postal settlement fact independent of the county UCR proxy.
ZIP 48027 is about 2% of the county reporting population (3,187 of 160,383), so most of the denominator and submitted incidents sit outside this postal code.
St. Clair County leans on larceny-theft at 53% of reported offenses (mix index 3,595). ZIP 48027 has no separate FBI offense book.
St. Clair County 2024 vs 2023: violent counts -12% vs 2023; property counts -12% vs 2023. Year-over-year moves are county agency submissions, still not ZIP-native.
St. Clair 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 48027
Similar county violent rate (~100/100K)
- ZIP 78562, TX · 100.4/100K · Hidalgo County
- ZIP 86321, AZ · 100.3/100K · Yavapai County
- ZIP 71639, AR · 100.5/100K · Lincoln County
- ZIP 21757, MD · 100.1/100K · Carroll County
Similar Census population (~3,187)
- ZIP 47334, IN · 3,187 pop · Δ0
- ZIP 15112, PA · 3,185 pop · Δ2
- ZIP 04756, ME · 3,190 pop · Δ3
- ZIP 07838, NJ · 3,190 pop · Δ3
County detail: St. Clair County · State atlas: Michigan
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.