ZIP code profile · 2024 county data

ZIP Code 31520

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

Data updated 2026-08-24

1,789
Property rate /100K (county)
22,264
Population (ZIP)
333
Violent rate /100K (county)

Is ZIP code 31520 safe? Honest data snapshot

ZIP code 31520 sits within Glynn County, GA. 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.

Glynn County reported a violent-crime rate of 333 per 100,000 residents and a property-crime rate of 1,789 per 100,000 in 2024, drawing on county-level agency submissions.

ZIP 31520 carries a Census-reported population of 22,264, ranking #2 of 7 ZIPs in Glynn County, spread across 20.14 square miles (about 1,105 people per square mile). For a full breakdown of Glynn County's crime categories and year-over-year trend, see the Glynn County crime page linked below.

ZIP 31520 has no FBI-native crime rate (postal codes are not police jurisdictions). The property-led county proxy above is from Glynn County agency submissions; see methodology for the ZCTA plurality map. Methodology.

ZIP 31520 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
$35,181
Median age
37.8 years
Owner-occupied homes
45%
Occupied homes
8,958

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 31520?

Participating agencies give Glynn County a split reported profile: violent crime is 5% below the U.S. benchmark while property crime is 5% above it. The categories should be read separately; the submissions neither establish complete county coverage nor provide a ZIP-specific rate for 31520. 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.

ZIP 31520 sits near the middle of Glynn County's ZIP population ordering (#2 of 7). The county comparison is useful regional context, but it cannot say how reported incidents are distributed within this postal area.

Glynn County UCR book ZIP 31520 inherits

ZIP 31520 itself is about 1,105 people per Census sq mi across 20.1 sq mi (22,264 residents), a postal settlement fact independent of the county UCR proxy.

ZIP 31520's 22,264 residents are about 26.3% of the 2024 county reporting population (84,499), a large postal share of a county-wide rate.

Glynn County's 2024 UCR book concentrates in larceny-theft (69% of 1,793 offenses; mix index 5,035). ZIP 31520 inherits that county mix, not a postal-native split.

Glynn 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 31520

Similar county violent rate (~333/100K)

Similar Census population (~22,264)

County detail: Glynn County · State atlas: Georgia

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.