ZIP code · Los Altos · California · United States

ZIP code 94023 — Los Altos

ZIP code 94023 serves Los Altos, California.

Postal code: 94023
Single source Value from one source, not cross-checked.
City: Los Altos
County: Santa Clara
State: California
Country: United States
Coordinates: 37.3852, -122.1141 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 9b (25 to 30 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone: America/Los_Angeles (UTC−8 / UTC−7 DST)
Area code: 650
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 94023 with another ZIP · ZIPs within 25 miles · distance from 94023

Climate — monthly normals

Warmest month Sep (avg high 78°F), coldest Dec (avg low 42°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	59	62	65	68	72	76	77	77	78	74	66	59
Avg low °F	42	45	47	49	53	56	59	59	57	53	46	42
Precip in	2.5	2.9	2.0	1.0	0.4	0.1	0.0	0.0	0.1	0.6	1.4	2.5

NOAA 1991–2020 climate normals from the nearest station: MOFFETT FEDERAL AIRFIELD (3.9 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