ZIP code · Copeville · Texas · United States

ZIP code 75121 — Copeville

ZIP code 75121 serves Copeville, Texas.

Postal code: 75121
Single source Value from one source, not cross-checked.
City: Copeville
County: Collin
State: Texas
Country: United States
Coordinates: 33.0875, -96.4186 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 8b (15 to 20 °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 codes: 469, 972, 945 (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 75121 with another ZIP · ZIPs within 25 miles · distance from 75121

Climate — monthly normals

Warmest month Aug (avg high 93°F), coldest Jan (avg low 34°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	54	58	65	73	80	88	92	93	87	77	65	56
Avg low °F	34	38	46	53	63	70	73	73	66	55	45	36
Precip in	2.6	2.7	3.5	3.7	4.7	4.1	1.9	2.1	3.1	4.4	3.4	3.5

NOAA 1991–2020 climate normals from the nearest station: LAVON DAM (5.3 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