ZIP code · Caldwell · Idaho · United States

ZIP code 83606 — Caldwell

ZIP code 83606 serves Caldwell, Idaho.

Postal code: 83606
Single source Value from one source, not cross-checked.
City: Caldwell
County: Canyon
State: Idaho
Country: United States
Coordinates: 43.7249, -116.7989 — 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/Boise (UTC−7 / UTC−6 DST)
Area codes: 208, 986
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 83606 with another ZIP · ZIPs within 25 miles · distance from 83606

Climate — monthly normals

Warmest month Jul (avg high 92°F), coldest Jan (avg low 23°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	37	46	57	64	73	81	92	91	82	66	49	38
Avg low °F	23	26	31	36	46	52	57	55	46	36	28	23
Precip in	1.3	0.8	0.9	0.9	1.4	0.8	0.3	0.2	0.6	0.7	1.0	1.1

NOAA 1991–2020 climate normals from the nearest station: PARMA EXP STN (9.0 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