ZIP code · Alton · Missouri · United States

ZIP code 65606 — Alton

ZIP code 65606 serves Alton, Missouri.

Postal code
65606
Single source Value from one source, not cross-checked.
City
Alton
County
Oregon FIPS 29149
State
Missouri
Country
United States
Coordinates
36.6929, -91.3971 — precision estimated (postal-area centroid)
View on OpenStreetMap
Population
2,540 (ZCTA, ACS 5-year)
Population density
12 / sq mi
Land area
212.5 sq mi (550.4 km²) (ZCTA, ACS 5-year)
Median household income
$51,786
Per-capita income
$23,718
Median age
37.2
Households
1,008
Housing units
1,261
Median home value
$130,400
Median gross rent
$845 / month
Congressional district
MO-8 (119th Congress)
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/Chicago (UTC−6 / UTC−5 DST)
Area code
417
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 Jul (avg high 88°F), coldest Jan (avg low 22°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F444958697685888881705746
Avg low °F222534435362666455433326
Precip in3.03.44.54.75.63.34.03.93.53.84.43.3

NOAA 1991–2020 climate normals from the nearest station: ALTON (0.1 mi) · NOAA NCEI

Places in ZIP 65606

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

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