ZIP code · Costa Mesa · California · United States

ZIP code 92628 — Costa Mesa

ZIP code 92628 serves Costa Mesa, California.

Postal code: 92628
Single source Value from one source, not cross-checked.
City: Costa Mesa
County: Orange
State: California
Country: United States
Coordinates: 33.6401, -117.9159 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 10b (35 to 40 °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 codes: 909, 840 (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 92628 with another ZIP · ZIPs within 25 miles · distance from 92628

Climate — monthly normals

Warmest month Sep (avg high 74°F), coldest Dec (avg low 50°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	65	63	65	66	67	68	72	73	74	73	68	64
Avg low °F	50	51	53	55	58	62	65	66	64	60	55	50
Precip in	2.2	2.4	1.3	0.6	0.2	0.1	0.0	0.0	0.1	0.3	0.6	1.6

NOAA 1991–2020 climate normals from the nearest station: NEWPORT BEACH HARBOR (3.2 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