ZIP code · Maxwell · Texas · United States

ZIP code 78656 — Maxwell

ZIP code 78656 serves Maxwell, Texas.

Postal code
78656
Single source Value from one source, not cross-checked.
City
Maxwell
County
Caldwell FIPS 48055
State
Texas
Country
United States
Coordinates
29.8953, -97.8144 — precision precise (locality)
View on OpenStreetMap
Population
2,953 (ZCTA, ACS 5-year)
Population density
104 / sq mi
Land area
28.4 sq mi (73.6 km²) (ZCTA, ACS 5-year)
Median household income
$78,058
Per-capita income
$38,062
Median age
32.6
Households
1,061
Housing units
1,073
Median home value
$194,900
Median gross rent
$1,510 / month
Congressional districts
TX-27 (also TX-35) (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 codes
737, 512 (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.

Climate — monthly normals

Warmest month Aug (avg high 97°F), coldest Jan (avg low 39°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F626773808692969791827264
Avg low °F394250566572737469584841
Precip in2.41.72.83.24.53.62.22.64.04.42.72.4

NOAA 1991–2020 climate normals from the nearest station: SAN MARCOS (8.1 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 · 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