ZIP code profile · 2024 county data

ZIP Code 03301

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

Data updated 2026-07-13

33,986
Population (ZIP)
1
Violent rate /100K (county)
1
Property rate /100K (county)

Is ZIP code 03301 safe? Honest data snapshot

ZIP code 03301 sits within Merrimack 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 03301 is the largest ZIP in Merrimack County by population, 33,986 residents (#1 of 28 county ZIPs), across 49.23 square miles (690/sq mi). For a full breakdown of Merrimack County's crime categories and year-over-year trend, see the Merrimack County crime page linked below.

ZIP 03301 has no FBI-native crime rate (postal codes are not police jurisdictions). Figures above use the Merrimack County proxy where reported; see methodology for the ZCTA plurality map. Methodology.

ZIP Population
33,986
Land Area
49.23 sq mi
County Violent Rate /100K
1
County Property Rate /100K
1

Frequently Asked Questions

What is the crime rate for ZIP code 03301? ▼
The FBI does not publish crime data by ZIP code, and for Merrimack County, NH (the county containing ZIP 03301) agencies did not report complete 2024 data to the UCR Program. The county figures shown cover only the agencies that submitted, so no meaningful crime rate can be stated for this area. Low reported counts here indicate missing reports, not an absence of crime.
What county is ZIP code 03301 in? ▼
ZIP code 03301 is located in Merrimack County, NH.

Other ZIP Codes in Merrimack County

03046
03106
03216
03221
03224
03229
03230
03231

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Merrimack County Crime

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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.

Source: FBI Uniform Crime Reporting (UCR) Program County UCR via ZIP-to-county crosswalk ZIP 03301 inherits county-level FBI UCR figures for Merrimack County, NH.

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.