ZIP code · Tarkio · Missouri · United States

ZIP code 64491 — Tarkio

ZIP code 64491 serves Tarkio, Missouri.

Postal code
64491
Single source Value from one source, not cross-checked.
City
Tarkio
County
Atchison FIPS 29005
State
Missouri
Country
United States
Coordinates
40.4418, -95.3786 — precision precise (locality)
View on OpenStreetMap
Population
1,642 (ZCTA, ACS 5-year)
Population density
14 / sq mi
Land area
115.5 sq mi (299.2 km²) (ZCTA, ACS 5-year)
Median household income
$62,063
Per-capita income
$34,240
Median age
48.8
Households
745
Housing units
882
Median home value
$90,700
Median gross rent
$610 / month
Congressional district
MO-6 (119th Congress)
USDA hardiness zone
5b (-15 to -10 °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
660
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 85°F), coldest Jan (avg low 15°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F333852637282858478655037
Avg low °F151829395162666354403020

NOAA 1991–2020 climate normals from the nearest station: TARKIO (0.7 mi) · NOAA NCEI

Places in ZIP 64491

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