ZIP code · Chattanooga · Tennessee · United States

ZIP code 37405 — Chattanooga

ZIP code 37405 serves Chattanooga, Tennessee.

Postal code
37405
Single source Value from one source, not cross-checked.
City
Chattanooga
County
Hamilton FIPS 47065
State
Tennessee
Country
United States
Coordinates
35.0768, -85.3082 — precision precise (locality)
View on OpenStreetMap
Population
18,535 (ZCTA, ACS 5-year)
Population density
341 / sq mi
Land area
54.3 sq mi (140.7 km²) (ZCTA, ACS 5-year)
Median household income
$77,850
Per-capita income
$65,829
Median age
36
Households
8,642
Housing units
9,959
Median home value
$416,900
Median gross rent
$1,276 / month
Congressional districts
TN-4 (also TN-3) (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/New_York (UTC−5 / UTC−4 DST)
Area code
423
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 84°F), coldest Jan (avg low 29°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F464958687481848278675749
Avg low °F293139475765676761514032
Precip in5.56.05.65.54.34.24.84.04.93.84.65.4

NOAA 1991–2020 climate normals from the nearest station: LOOKOUT MTN-POINT PARK (5.1 mi) · NOAA NCEI

Places in ZIP 37405

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