ZIP code · Farmington · Kentucky · United States

ZIP code 42040 — Farmington

ZIP code 42040 serves Farmington, Kentucky.

Postal code: 42040
Single source Value from one source, not cross-checked.
City: Farmington
County: Graves FIPS 21083
State: Kentucky
Country: United States
Coordinates: 36.6000, -88.5186 — precision precise (locality)
View on OpenStreetMap
Population: 983 (ZCTA, ACS 5-year)
Population density: 31 / sq mi
Land area: 31.8 sq mi (82.3 km²) (ZCTA, ACS 5-year)
Median household income: $61,458
Per-capita income: $35,345
Median age: 42.4
Households: 401
Housing units: 488
Median home value: $183,200
Congressional district: KY-1 (119th Congress)
USDA hardiness zone: 7b (5 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: 270
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 42040 with another ZIP · ZIPs within 25 miles · distance from 42040

Climate — monthly normals

Warmest month Jul (avg high 89°F), coldest Jan (avg low 27°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	46	50	61	71	79	86	89	89	83	71	58	48
Avg low °F	27	31	38	48	57	65	69	67	60	48	38	31
Precip in	4.2	5.2	5.5	5.6	5.8	5.3	4.7	3.6	3.9	4.1	4.6	5.5

NOAA 1991–2020 climate normals from the nearest station: MURRAY (11.7 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

Map of ZIP code 42040

Climate — monthly normals

About this page