ZIP code · Mcallen · Texas · United States

ZIP code 78505 — Mcallen

ZIP code 78505 serves Mcallen, Texas.

Postal code: 78505
Single source Value from one source, not cross-checked.
City: Mcallen
County: Hidalgo
State: Texas
Country: United States
Coordinates: 26.2034, -98.2300 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 10a (30 to 35 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone: America/Chicago (UTC−6 / UTC−5 DST)
Area code: 956
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 78505 with another ZIP · ZIPs within 25 miles · distance from 78505

Climate — monthly normals

Warmest month Aug (avg high 99°F), coldest Jan (avg low 49°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	71	76	82	87	92	96	98	99	94	89	80	73
Avg low °F	49	53	59	65	71	76	77	77	73	66	57	51
Precip in	0.7	0.6	1.0	1.4	1.4	3.0	1.6	1.4	3.8	2.0	1.1	0.6

NOAA 1991–2020 climate normals from the nearest station: MCALLEN (1.6 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