ZIP code · Joint Base Mdl · New Jersey · United States

ZIP code 08640 — Joint Base Mdl

ZIP code 08640 serves Joint Base Mdl, New Jersey.

Postal code
08640
Single source Value from one source, not cross-checked.
City
Joint Base Mdl
County
Burlington FIPS 34005
State
New Jersey
Country
United States
Coordinates
40.2171, -74.7429 — precision estimated (postal-area centroid)
View on OpenStreetMap
Population
8,034 (ZCTA, ACS 5-year)
Population density
434 / sq mi
Land area
18.5 sq mi (48 km²) (ZCTA, ACS 5-year)
Median household income
$98,259
Per-capita income
$16,643
Median age
36.1
Households
901
Housing units
1,071
Median gross rent
$2,383 / month
Congressional district
NJ-3 (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)
Area codes
609, 640 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 87°F), coldest Jan (avg low 23°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F404351637382878478665545
Avg low °F232431415059656356443526
Precip in3.62.84.43.63.54.74.84.34.14.03.24.3

NOAA 1991–2020 climate normals from the nearest station: TRENTON STATE COLLEGE (4.5 mi) · NOAA NCEI

Places in ZIP 08640

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