ZIP code · Portsmouth · Virginia · United States

ZIP code 23705 — Portsmouth

ZIP code 23705 serves Portsmouth, Virginia.

Postal code: 23705
Single source Value from one source, not cross-checked.
City: Portsmouth
County: Portsmouth (city)
State: Virginia
Country: United States
Coordinates: 36.8686, -76.3552 — precision precise (locality)
View on OpenStreetMap
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.

Tools: compare 23705 with another ZIP · ZIPs within 25 miles · distance from 23705

Climate — monthly normals

Warmest month Jul (avg high 89°F), coldest Jan (avg low 34°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	50	53	59	70	77	84	89	86	81	72	61	54
Avg low °F	34	35	41	50	60	68	73	72	67	56	45	38
Precip in	2.9	2.5	3.5	3.3	3.5	4.6	5.2	5.3	5.1	3.6	3.1	2.9

NOAA 1991–2020 climate normals from the nearest station: NORFOLK NAS (6.9 mi) · NOAA NCEI

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 · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page