ZIP code profile · 2024 county data

ZIP Code 21131

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

Data updated 2026-08-24

7,722
Population (ZIP)
0
Violent rate /100K (county)
0
Property rate /100K (county)

Is ZIP code 21131 safe? Honest data snapshot

ZIP code 21131 sits within Baltimore County, MD, 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 21131 carries a Census-reported population of 7,722, ranking #41 of 67 ZIPs in Baltimore County, spread across 21.03 square miles (about 367 people per square mile). For a full breakdown of Baltimore County's crime categories and year-over-year trend, see the Baltimore County crime page linked below.

ZIP 21131 has no FBI-native crime rate (postal codes are not police jurisdictions). Figures above use the Baltimore County proxy where reported; see methodology for the ZCTA plurality map. Methodology.

ZIP 21131 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
$187,500
Median age
48.4 years
Owner-occupied homes
98%
Occupied homes
2,658

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

ZIP 21131 settlement vs Baltimore County

ZIP 21131 itself is about 367 people per Census sq mi across 21 sq mi (7,722 residents), a postal settlement fact independent of the county UCR proxy.

ZIP 21131 is about 0.9% of the county reporting population (7,722 of 854,535), so most of the denominator and submitted incidents sit outside this postal code.

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 21131

Similar Census population (~7,722)

County detail: Baltimore County · State atlas: Maryland

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.

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.