ZIP code · Trenton · New Jersey · United States
ZIP code 08638 — Trenton
ZIP code 08638 serves Trenton, New Jersey.
- Postal code
- 08638Single source Value from one source, not cross-checked.
- City
- Trenton
- County
- Mercer FIPS 34021
- State
- New Jersey
- Country
- United States
- Coordinates
- 40.2510, -74.7627 — precision precise (locality)
View on OpenStreetMap - Population
- 23,373 (ZCTA, ACS 5-year)
- Population density
- 4,306 / sq mi
- Land area
- 5.4 sq mi (14.1 km²) (ZCTA, ACS 5-year)
- Median household income
- $65,650
- Per-capita income
- $33,023
- Median age
- 35.8
- Households
- 9,129
- Housing units
- 10,148
- Median home value
- $226,700
- Median gross rent
- $1,499 / month
- Congressional district
- NJ-12 (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 08638 with another ZIP · ZIPs within 25 miles · distance from 08638
Map of ZIP code 08638
Climate — monthly normals
Warmest month Jul (avg high 87°F), coldest Jan (avg low 23°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 43 | 51 | 63 | 73 | 82 | 87 | 84 | 78 | 66 | 55 | 45 |
| Avg low °F | 23 | 24 | 31 | 41 | 50 | 59 | 65 | 63 | 56 | 44 | 35 | 26 |
| Precip in | 3.6 | 2.8 | 4.4 | 3.6 | 3.5 | 4.7 | 4.8 | 4.3 | 4.1 | 4.0 | 3.2 | 4.3 |
NOAA 1991–2020 climate normals from the nearest station: TRENTON STATE COLLEGE (2.1 mi) · NOAA NCEI
Places in ZIP 08638
- 12 schools
- 2 hospitals & clinics
- 4 doctors & dentists
- 5 pharmacies
- 3 supermarkets
- 41 restaurants & cafés
- 10 bars & pubs
- 15 parks
- 16 playgrounds
- 2 gyms & sports centres
- 1 libraries
- 34 places of worship
- 6 banks
- 11 gas stations
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page