ZIP code · Smiths Grove · Kentucky · United States
ZIP code 42171 — Smiths Grove
ZIP code 42171 serves Smiths Grove, Kentucky.
- Postal code
- 42171Single source Value from one source, not cross-checked.
- City
- Smiths Grove
- County
- Warren FIPS 21227
- State
- Kentucky
- Country
- United States
- Coordinates
- 37.0581, -86.1938 — precision precise (locality)
View on OpenStreetMap - Population
- 7,189 (ZCTA, ACS 5-year)
- Population density
- 70 / sq mi
- Land area
- 103.3 sq mi (267.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $65,917
- Per-capita income
- $28,821
- Median age
- 38.7
- Households
- 2,697
- Housing units
- 2,992
- Median home value
- $173,300
- Median gross rent
- $877 / month
- Congressional district
- KY-2 (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
- 270Telephone 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 42171 with another ZIP · ZIPs within 25 miles · distance from 42171
Map of ZIP code 42171
Climate — monthly normals
Warmest month Jul (avg high 91°F), coldest Jan (avg low 29°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 48 | 53 | 62 | 73 | 81 | 88 | 91 | 90 | 85 | 74 | 61 | 51 |
| Avg low °F | 29 | 32 | 40 | 48 | 57 | 64 | 68 | 67 | 60 | 49 | 40 | 33 |
| Precip in | 3.7 | 4.5 | 5.0 | 4.9 | 5.2 | 4.8 | 4.9 | 3.8 | 4.0 | 3.8 | 4.1 | 4.8 |
NOAA 1991–2020 climate normals from the nearest station: MAMMOTH CAVE (5.7 mi) · NOAA NCEI
Places in ZIP 42171
- 2 schools
- 6 restaurants & cafés
- 1 parks
- 10 playgrounds
- 1 libraries
- 1 post offices
- 17 places of worship
- 7 gas stations
- 1 EV charging stations
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