ZIP code profile · 2024 county data
ZIP Code 18109
Lehigh County, Pennsylvania: Census demographics for this ZIP plus the containing county's FBI UCR crime rate.
Data updated 2026-08-24
- 17,745
- Population (ZIP)
- 0
- Violent rate /100K (county)
- 0
- Property rate /100K (county)
Is ZIP code 18109 safe? Honest data snapshot
ZIP code 18109 sits within Lehigh County, PA, in which law-enforcement agencies did not report complete 2024 data to the FBI UCR Program. The county figures below cover only the agencies that submitted, so they are not a measure of crime in this area and no comparison to the national average is drawn from them.
ZIP 18109 carries a Census-reported population of 17,745, ranking #8 of 28 ZIPs in Lehigh County, spread across 8.25 square miles (about 2,151 people per square mile). For a full breakdown of Lehigh County's crime categories and year-over-year trend, see the Lehigh County crime page linked below.
ZIP 18109 has no FBI-native crime rate (postal codes are not police jurisdictions). Figures above use the Lehigh County proxy where reported; see methodology for the ZCTA plurality map. Methodology.
ZIP 18109 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
- $53,540
- Median age
- 35.1 years
- Owner-occupied homes
- 50%
- Occupied homes
- 7,047
Source: U.S. Census Bureau, ACS 2022 5-year ZCTA estimates (income, age, and occupied housing tenure).
ZIP 18109 settlement vs Lehigh County
ZIP 18109 itself is about 2,151 people per Census sq mi across 8.3 sq mi (17,745 residents), a postal settlement fact independent of the county UCR proxy.
ZIP 18109 accounts for roughly 4.7% of the county reporting population (17,745 of 374,557).
Settlement lines use Census ZCTA figures only; incomplete county agency coverage blocks any UCR mix or rate desk for this ZIP.
Nationwide peers for ZIP 18109
Similar Census population (~17,745)
- ZIP 94612, CA · 17,742 pop · Δ3
- ZIP 38829, MS · 17,749 pop · Δ4
- ZIP 46373, IN · 17,741 pop · Δ4
- ZIP 14611, NY · 17,753 pop · Δ8
County detail: Lehigh County · State atlas: Pennsylvania
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.