ZIP code profile · 2024 county data

ZIP Code 03031

Hillsborough County, New Hampshire: Census demographics for this ZIP plus the containing county's FBI UCR crime rate.

Data updated 2026-08-24

11,814
Population (ZIP)
0
Violent rate /100K (county)
0
Property rate /100K (county)

Is ZIP code 03031 safe? Honest data snapshot

ZIP code 03031 sits within Hillsborough County, NH, 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 03031 carries a Census-reported population of 11,814, ranking #14 of 34 ZIPs in Hillsborough County, spread across 33.92 square miles (about 348 people per square mile). For a full breakdown of Hillsborough County's crime categories and year-over-year trend, see the Hillsborough County crime page linked below.

ZIP 03031 has no FBI-native crime rate (postal codes are not police jurisdictions). Figures above use the Hillsborough County proxy where reported; see methodology for the ZCTA plurality map. Methodology.

ZIP 03031 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
$152,796
Median age
46.2 years
Owner-occupied homes
91%
Occupied homes
4,535

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

ZIP 03031 settlement vs Hillsborough County

ZIP 03031 itself is about 348 people per Census sq mi across 33.9 sq mi (11,814 residents), a postal settlement fact independent of the county UCR proxy.

ZIP 03031 accounts for roughly 2.8% of the county reporting population (11,814 of 422,937).

Hillsborough County's 2024 UCR book concentrates in larceny-theft (100% of 1 offenses; mix index 10,000). ZIP 03031 inherits that county mix, not a postal-native split.

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 03031

Similar Census population (~11,814)

County detail: Hillsborough County · State atlas: New Hampshire

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.