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City ZIP codes · Tennessee

Chattanooga, TN ZIP Codes

20 ZIP codes use the postal name Chattanooga, Tennessee (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 16 residential and 4 for PO boxes or a single organization. Median household income runs from $35,845 in 37407 to $82,517 in 37421, 2.3 times as much (Census Bureau, ACS 2020-2024). Chattanooga's most populous ZIP code is 37421, with 52,985 people (ACS 2020-2024); 77% of its land is in the city of Chattanooga.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Chattanooga's ZIP codes?

37402: $24k median household income37403: $81k median household income37404: $57k median household income37405: $81k median household income37406: $45k median household income37407: $36k median household income37408: $81k median household income37409: $75k median household income37410: $29k median household income37411: $57k median household income37412: $63k median household income37415: $71k median household income37416: $71k median household income37419: $75k median household income37421: $83k median household income37450: – median household income37405374193741537421374163740637404374123741137409374083740737410374033740237402: $24k median household income37403: $81k median household income37404: $57k median household income37405: $81k median household income37406: $45k median household income37407: $36k median household income37408: $81k median household income37409: $75k median household income37410: $29k median household income37411: $57k median household income37412: $63k median household income37415: $71k median household income37416: $71k median household income37419: $75k median household income37421: $83k median household income37450: – median household income3740537419374153742137416374063740437412374113740937408374073740337402: $24k median household income37403: $81k median household income37404: $57k median household income37405: $81k median household income37406: $45k median household income37407: $36k median household income37408: $81k median household income37409: $75k median household income37410: $29k median household income37411: $57k median household income37412: $63k median household income37415: $71k median household income37416: $71k median household income37419: $75k median household income37421: $83k median household income374053741937415374213741637406374043741237409
The 16 residential ZIP codes named Chattanooga, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Chattanooga's ZIP codes?

The highest median household income is in 37421 ($82,517), the lowest in 37407 ($35,845). Home values run from $98,900 in 37407 to $525,200 in 37403.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 16 residential ZIP codes of Chattanooga

Residential ZIP codes with the postal name Chattanooga, TN, largest first (ACS 2020-2024); sort by any column
County
37421 Hamilton County 52,985 1,671 $83k $334k
37415 Hamilton County 24,181 1,380 $71k $285k
37412 Hamilton County 21,864 2,525 $63k $210k
37411 Hamilton County 18,997 2,588 $57k $232k
37405 Marion County 18,109 333 $81k $461k
37404 Hamilton County 14,737 2,844 $57k $255k
37416 Hamilton County 13,919 678 $71k $253k
37406 Hamilton County 13,364 1,101 $45k $168k
37407 Hamilton County 9,156 2,693 $36k $99k
37403 Hamilton County 6,413 3,761 $81k $525k
37419 Marion County 5,980 122 $75k $352k
37410 Hamilton County 4,129 1,365 $29k $153k
37402 Hamilton County 3,953 3,074 $24k $269k
37408 Hamilton County 3,502 1,648 $81k $468k
37409 Hamilton County 3,357 760 $75k $267k
37450 Hamilton County no residents 0 – –

Download the 20 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Chattanooga

4 ZIP codes named Chattanooga have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Chattanooga, TN: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
37401Hamilton County
37414Hamilton County
37422Hamilton County
37424Hamilton County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Chattanooga's ZIP codes reach?

Chattanooga's residential ZIP codes lie in 2 counties: Hamilton County (14 ZIP codes mainly there), Marion County (2 ZIP codes mainly there).

Which places do Chattanooga's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Chattanooga's residential ZIP codes cover Chattanooga itself and 4 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Chattanooga's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Chattanooga starts with 374.

Three-digit prefixes of Chattanooga's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Chattanooga's
PrefixSectional centerHereAll codes
374 Chattanooga, TN (SCF 373) 20 20

All 20 ZIP codes that start with 374 are Chattanooga's: 16 residential codes and 4 PO Box or unique codes, sorted at Chattanooga, TN (SCF 373).

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.