ZIP code
37421
Chattanooga, TN
37421 covers Chattanooga in Hamilton County, with 52,516 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 37421. Methodology
ZIP code map of 37421
About ZIP code 37421
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 37421. Not ACS. Methodology
People in 37421
Race
- White33,520
- Black or African American9,670
- American Indian or Alaska Native259
- Asian2,962
- Native Hawaiian and Pacific Islander17
- Other race1,789
- Two or more races3,469
Hispanic or Latino (any race): 4,039
Age
- Under 105,568
- 10 to 195,864
- 20 to 297,371
- 30 to 397,076
- 40 to 496,236
- 50 to 596,453
- 60 to 696,255
- 70 to 794,294
- 80 and older2,569
Income and housing in 37421
Education
- High school graduate92.3%
- Bachelor's degree37.9%
- Graduate degree15.0%
Places covering 37421
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Chattanooga74.2%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Hamilton County100.0%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
25.8% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 37421
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 39,283 | |
| 2006 | 38,732 | |
| 2007 | 41,614 | |
| 2008 | 40,434 | |
| 2009 | 42,179 | |
| 2010 | 43,399 | |
| 2011 | 46,325 | 43,586 |
| 2012 | 46,835 | 43,380 |
| 2013 | 45,902 | 43,370 |
| 2014 | 47,397 | 44,090 |
| 2015 | 47,400 | 45,140 |
| 2016 | 47,810 | 44,090 |
| 2017 | 49,388 | 44,860 |
| 2018 | 50,927 | 44,980 |
| 2019 | 52,254 | 44,020 |
| 2020 | 53,050 | 45,570 |
| 2021 | 53,653 | 44,990 |
| 2022 | 52,507 | 45,320 |
| 2023 | 52,516 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 37421
12 nearest ZIP centroids (any distance)
- 30726Graysville3.7 miPop 0 · Income —
- 37411Chattanooga4.3 miPop 18,815 · Income $50,180
- 37412Chattanooga4.7 miPop 21,840 · Income $56,600
- 37416Chattanooga4.9 miPop 14,089 · Income $65,083
- 37315Collegedale5.9 miPop 1,740 · Income —
- 37406Chattanooga6.1 miPop 12,867 · Income $42,993
- 37404Chattanooga6.8 miPop 13,883 · Income $53,585
- 37302Apison7.5 miPop 5,253 · Income $103,578
- 37351Lupton City7.9 miPop 295 · Income $38,965
- 37407Chattanooga7.9 miPop 10,164 · Income $33,785
- 37403Chattanooga8.1 miPop 6,560 · Income $65,750
- 30742Fort Oglethorpe8.2 miPop 7,749 · Income $46,473
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 37421, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 37421 FAQ
- What city is ZIP code 37421 in?
- 37421 is in Chattanooga, TN.
- What county is 37421 in?
- 37421 is in Hamilton County.
- What is the median household income in 37421?
- The median household income in 37421 is $79,958.
- Which ZIP codes are near 37421?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 37421.