ZIP code · Chattanooga · Tennessee · United States
ZIP code 37401 — Chattanooga
ZIP code 37401 serves Chattanooga, Tennessee.
- Postal code
- 37401Single source Value from one source, not cross-checked.
- City
- Chattanooga
- County
- Hamilton
- State
- Tennessee
- Country
- United States
- Coordinates
- 35.0456, -85.3097 — precision precise (locality)
View on OpenStreetMap - USDA hardiness zone
- 8a (10 to 15 °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
- 423Telephone 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 37401 with another ZIP · ZIPs within 25 miles · distance from 37401
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 29°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 46 | 49 | 58 | 68 | 74 | 81 | 84 | 82 | 78 | 67 | 57 | 49 |
| Avg low °F | 29 | 31 | 39 | 47 | 57 | 65 | 67 | 67 | 61 | 51 | 40 | 32 |
| Precip in | 5.5 | 6.0 | 5.6 | 5.5 | 4.3 | 4.2 | 4.8 | 4.0 | 4.9 | 3.8 | 4.6 | 5.4 |
NOAA 1991–2020 climate normals from the nearest station: LOOKOUT MTN-POINT PARK (3.2 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