ZIP code · Danville · Kentucky · United States
ZIP code 40423 — Danville
ZIP code 40423 serves Danville, Kentucky.
- Postal code
- 40423Single source Value from one source, not cross-checked.
- City
- Danville
- County
- Boyle
- State
- Kentucky
- Country
- United States
- Coordinates
- 37.6456, -84.7722 — precision precise (locality)
View on OpenStreetMap - 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/New_York (UTC−5 / UTC−4 DST)
- Area code
- 859Telephone 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 40423 with another ZIP · ZIPs within 25 miles · distance from 40423
Climate — monthly normals
Warmest month Jul (avg high 87°F), coldest Jan (avg low 23°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 43 | 47 | 56 | 68 | 75 | 83 | 87 | 86 | 80 | 69 | 56 | 46 |
| Avg low °F | 23 | 26 | 33 | 44 | 54 | 61 | 65 | 64 | 57 | 45 | 34 | 28 |
| Precip in | 3.7 | 3.7 | 4.6 | 4.2 | 4.4 | 4.7 | 5.0 | 3.2 | 3.7 | 3.5 | 3.0 | 4.2 |
NOAA 1991–2020 climate normals from the nearest station: DANVILLE (0.5 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 · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page