ZIP code · Norristown · Pennsylvania · United States

ZIP code 19404 — Norristown

ZIP code 19404 serves Norristown, Pennsylvania.

Postal code: 19404
Single source Value from one source, not cross-checked.
City: Norristown
County: Montgomery
State: Pennsylvania
Country: United States
Coordinates: 40.2119, -75.3559 — precision precise (locality)
View on OpenStreetMap
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: 570, 272 (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 19404 with another ZIP · ZIPs within 25 miles · distance from 19404

Climate — monthly normals

Warmest month Jul (avg high 86°F), coldest Jan (avg low 20°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	40	42	50	62	72	81	86	84	78	66	55	45
Avg low °F	20	22	29	39	49	59	64	61	53	41	32	25
Precip in	3.3	2.6	3.9	3.8	4.0	4.2	5.0	4.6	4.9	4.5	3.4	4.4

NOAA 1991–2020 climate normals from the nearest station: GRATERFORD 1 E (3.8 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