ZIP code · Portsmouth · Virginia · United States

ZIP code 23703 — Portsmouth

ZIP code 23703 serves Portsmouth, Virginia.

Postal code
23703
Single source Value from one source, not cross-checked.
City
Portsmouth
County
Portsmouth (city) FIPS 51740
State
Virginia
Country
United States
Coordinates
36.8695, -76.3869 — precision precise (locality)
View on OpenStreetMap
Population
26,364 (ZCTA, ACS 5-year)
Population density
1,891 / sq mi
Land area
13.9 sq mi (36.1 km²) (ZCTA, ACS 5-year)
Median household income
$75,804
Per-capita income
$38,657
Median age
37.3
Households
9,962
Housing units
10,856
Median home value
$273,700
Median gross rent
$1,377 / month
Congressional district
VA-3 (119th Congress)
USDA hardiness zone
8b (15 to 20 °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
757, 948 (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 89°F), coldest Jan (avg low 34°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F505359707784898681726154
Avg low °F343541506068737267564538
Precip in2.92.53.53.33.54.65.25.35.13.63.12.9

NOAA 1991–2020 climate normals from the nearest station: NORFOLK NAS (8.0 mi) · NOAA NCEI

Places in ZIP 23703

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