ZIP code profile · 2024 county data
ZIP Code 94503
Napa County, California: Census demographics for this ZIP plus the containing county's FBI UCR crime rate.
Data updated 2026-08-24
- 115
- Property rate /100K (county)
- 21,791
- Population (ZIP)
- 54
- Violent rate /100K (county)
Is ZIP code 94503 safe? Honest data snapshot
ZIP code 94503 sits within Napa County, CA, a county whose reported crime runs below the national average (see the county-level FBI figures below, not a ZIP-specific calculation).
Reported crime here runs well below the national average: 54 violent incidents and 115 property incidents per 100,000 residents in 2024, per county-level agency submissions.
ZIP 94503 carries a Census-reported population of 21,791, ranking #3 of 10 ZIPs in Napa County, spread across 27.03 square miles (about 806 people per square mile). For a full breakdown of Napa County's crime categories and year-over-year trend, see the Napa County crime page linked below.
ZIP 94503 has no FBI-native crime rate (postal codes are not police jurisdictions). The property-led county proxy above is from Napa County agency submissions; see methodology for the ZCTA plurality map. Methodology.
ZIP 94503 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
- $122,500
- Median age
- 36.4 years
- Owner-occupied homes
- 79%
- Occupied homes
- 5,790
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 94503?
Within the participating-agency records for Napa County, reported violent and property crime rates both sit below their U.S. benchmarks: violent crime is 85% below and property crime is 93% below. The two submitted measures point in the same direction, but they do not establish complete county coverage or turn the result into a ZIP-level rating for 94503. 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 94503 sits near the middle of Napa County's ZIP population ordering (#3 of 10). The county comparison is useful regional context, but it cannot say how reported incidents are distributed within this postal area.
Napa County UCR book ZIP 94503 inherits
ZIP 94503 itself is about 806 people per Census sq mi across 27 sq mi (21,791 residents), a postal settlement fact independent of the county UCR proxy.
ZIP 94503's 21,791 residents are about 15.8% of the 2024 county reporting population (138,019), a large postal share of a county-wide rate.
Napa County leans on larceny-theft at 54% of reported offenses (mix index 3,826). ZIP 94503 has no separate FBI offense book.
Napa County 2024 vs 2023: violent counts +6% vs 2023; property counts -28% vs 2023. Year-over-year moves are county agency submissions, still not ZIP-native.
Napa 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 94503
Similar county violent rate (~54/100K)
- ZIP 79339, TX · 53.7/100K · Lamb County
- ZIP 47904, IN · 53.7/100K · Tippecanoe County
- ZIP 43056, OH · 53.8/100K · Licking County
- ZIP 56187, MN · 53.8/100K · Nobles County
Similar Census population (~21,791)
- ZIP 72205, AR · 21,794 pop · Δ3
- ZIP 75039, TX · 21,795 pop · Δ4
- ZIP 78503, TX · 21,799 pop · Δ8
- ZIP 36265, AL · 21,802 pop · Δ11
County detail: Napa County · State atlas: California
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.