ZIP code · Altoona · Pennsylvania · United States

ZIP code 16603 — Altoona

ZIP code 16603 serves Altoona, Pennsylvania.

Postal code: 16603
Single source Value from one source, not cross-checked.
City: Altoona
County: Blair
State: Pennsylvania
Country: United States
Coordinates: 40.5018, -78.4100 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 6b (-5 to 0 °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: 814, 582
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 16603 with another ZIP · ZIPs within 25 miles · distance from 16603

Climate — monthly normals

Warmest month Jul (avg high 81°F), coldest Jan (avg low 19°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	34	37	46	60	70	77	81	80	73	61	49	38
Avg low °F	19	20	28	39	49	57	61	60	53	42	33	24
Precip in	2.9	2.6	3.5	3.8	4.4	4.2	4.2	3.9	4.3	3.8	3.6	3.4

NOAA 1991–2020 climate normals from the nearest station: ALTOONA 3 W (3.0 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