ZIP code · Palo Alto · California · United States

ZIP code 94306 — Palo Alto

ZIP code 94306 serves Palo Alto, California.

Postal code
94306
Single source Value from one source, not cross-checked.
City
Palo Alto
County
Santa Clara FIPS 06085
State
California
Country
United States
Coordinates
37.4180, -122.1274 — precision precise (locality)
View on OpenStreetMap
Population
27,527 (ZCTA, ACS 5-year)
Population density
6,739 / sq mi
Land area
4.1 sq mi (10.6 km²) (ZCTA, ACS 5-year)
Median household income
$186,479
Per-capita income
$110,083
Median age
41
Households
10,794
Housing units
11,853
Median home value
$2,000,000+
Median gross rent
$2,927 / month
Congressional district
CA-16 (119th Congress)
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.

Climate — monthly normals

Warmest month Sep (avg high 80°F), coldest Dec (avg low 39°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F586166707379797980746458
Avg low °F394144455053565553484339
Precip in3.03.22.21.00.40.10.00.00.10.61.63.0

NOAA 1991–2020 climate normals from the nearest station: PALO ALTO (1.9 mi) · NOAA NCEI

Places in ZIP 94306

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