ZIP code · Farmington · Missouri · United States

ZIP code 63640 — Farmington

ZIP code 63640 serves Farmington, Missouri.

Postal code
63640
Single source Value from one source, not cross-checked.
City
Farmington
County
St. Francois FIPS 29187
State
Missouri
Country
United States
Coordinates
37.7773, -90.4094 — precision precise (locality)
View on OpenStreetMap
Population
28,800 (ZCTA, ACS 5-year)
Population density
138 / sq mi
Land area
209.3 sq mi (542 km²) (ZCTA, ACS 5-year)
Median household income
$55,926
Per-capita income
$27,987
Median age
39.5
Households
10,282
Housing units
11,381
Median home value
$195,900
Median gross rent
$857 / month
Congressional district
MO-8 (119th Congress)
USDA hardiness zone
6b (-5 to 0 °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
573
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 89°F), coldest Jan (avg low 23°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F434858697785898881705746
Avg low °F232634445463676556453426
Precip in2.62.83.85.35.53.54.33.83.23.34.23.0

NOAA 1991–2020 climate normals from the nearest station: FARMINGTON (1.0 mi) · NOAA NCEI

Places in ZIP 63640

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