ZIP code · Fowlerton · Texas · United States

ZIP code 78021 — Fowlerton

ZIP code 78021 serves Fowlerton, Texas.

Postal code: 78021
Single source Value from one source, not cross-checked.
City: Fowlerton
County: La Salle FIPS 48283
State: Texas
Country: United States
Coordinates: 28.4887, -98.8518 — precision precise (locality)
View on OpenStreetMap
Population: 19 (ZCTA, ACS 5-year)
Population density: 0 / sq mi
Land area: 295.2 sq mi (764.5 km²) (ZCTA, ACS 5-year)
Per-capita income: $85,763
Median age: 66.7
Households: 11
Housing units: 15
Congressional districts: TX-23 (also TX-28) (119th Congress)
USDA hardiness zone: 9a (20 to 25 °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: 830
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 78021 with another ZIP · ZIPs within 25 miles · distance from 78021

Climate — monthly normals

Warmest month Aug (avg high 100°F), coldest Jan (avg low 39°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	68	72	79	86	91	97	99	100	93	87	76	68
Avg low °F	39	44	50	57	66	71	73	73	68	59	49	41
Precip in	1.5	1.1	2.1	1.8	3.4	2.6	2.8	2.0	3.9	2.3	1.3	1.4

NOAA 1991–2020 climate normals from the nearest station: FOWLERTON (1.2 mi) · NOAA NCEI

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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

Map of ZIP code 78021

Climate — monthly normals

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