Zip Code 37421
Chattanooga, Tennessee — Hamilton County
📍 ZIP code 37421 is in Chattanooga, Hamilton County, Tennessee.
ZIP code 37421 is located in Chattanooga, Hamilton County, Tennessee. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 52,516. The area code for ZIP code 37421 is 423.
Quick Answer
Zip code 37421 is in Chattanooga, Tennessee (Hamilton County). It has a population of 52,516, median household income of $79,958, and median home value of $299,600.
Population
52,516
Income
$79,958
Home Value
$299,600
Climate
91°F / 32°F
About Zip Code 37421
Zip code 37421 is located in Chattanooga, Tennessee, within Hamilton County. Home to approximately 52,516 residents, this area sits at an elevation of 737 ft and falls within the Central (CST/CDT) timezone. The local area code is 423.
The median household income is $79,958 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $299,600, and the cost of living index is 98 (2% below the national average of 100).
Summers average a high of 91°F while winters drop to 32°F. The area receives about 55 in of rain and 4 in of snow annually. The zip code covers 30.4 square miles of land area.
Key Statistics
52,516
$79,958
$299,600
Central (CST/CDT)
423
737 ft
30.4 sq mi
41.1
23,978
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Compare With Nearby Zip Codes
| Metric | 37421 | 30726 | 37411 | 37416 | 37412 | 37406 |
|---|---|---|---|---|---|---|
| City | Chattanooga, TN | Graysville, GA | Chattanooga, TN | Chattanooga, TN | Chattanooga, TN | Chattanooga, TN |
| Population | 52,516 | 0 | 18,815 | 14,089 | 21,840 | 12,867 |
| Median Income | $79,958 | $0 | $50,180 | $65,083 | $56,600 | $42,993 |
| Home Value | $299,600 | $0 | $216,800 | $229,600 | $182,600 | $150,300 |
| Cost of Living | 98 | 100 | 64 | 71 | 64 | 60 |
| Median Age | 41.1 | -666666666 | 38.2 | 38.6 | 36.7 | 35.9 |
Cost of Living
100 = National Average. Chattanooga's cost of living is 2% below the national average.
vs. State Avg
Below
Affordability
Affordable
Income-to-Home
3.7x
Demographics
Zip code 37421 has a population of 52,516 people with a median age of 41.1. There are 23,978 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Chattanooga (37421) population trend from 2010 to 2024
↑ 41.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
91°F
32°F
55 in
4 in
Chattanooga experiences hot summers with average highs around 91°F. Winters are cool with lows averaging 32°F. The area receives about 4 in of snow per year.
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Housing & Economy
Median Home Value
$299,600
Median Household Income
$79,958
With 23,978 housing units across 30.4 square miles, 37421 has a housing density of 789 units per square mile. The home price-to-income ratio is 3.7x.
Location & Geography
Latitude
35.0325°
Longitude
-85.1464°
Land Area
30.4 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 37421 (Chattanooga, TN) with distances:
All Zip Codes in Chattanooga, TN
Other zip codes serving Chattanooga:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 37421's $79,958. A way to compare Chattanooga to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 37421 (Chattanooga, TN). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Chattanooga, Tennessee?
Chattanooga, Tennessee uses zip code 37421 along with 12 other zip codes.
What county is zip code 37421 in?
Zip code 37421 is located in Hamilton County, Tennessee.
What is the population of zip code 37421?
The population of zip code 37421 is 52,516 with a median age of 41.1.
Is 37421 in Chattanooga, Tennessee?
Yes, zip code 37421 is in Chattanooga, Hamilton County, Tennessee. The area code is 423.
Frequently Asked Questions
What city is zip code 37421 in?
Zip code 37421 is in Chattanooga, Tennessee. It is part of Hamilton County and uses the Central (CST/CDT) timezone.
What is zip code 37421?
Zip code 37421 is a U.S. postal code in Chattanooga, Tennessee (Hamilton County). It has a population of 52,516 and covers 30.4 square miles.
What is the population of zip code 37421?
The population of zip code 37421 (Chattanooga, TN) is 52,516 with a median age of 41.1. There are approximately 23,978 housing units in this area.
What is the median income in zip code 37421?
The median household income in zip code 37421 (Chattanooga, TN) is $79,958 per year. The cost of living index is 98 (100 = national average).
What is the average home price in zip code 37421?
The median home value in zip code 37421 (Chattanooga, TN) is $299,600. The cost of living index is 98 compared to the national average of 100.
What county is zip code 37421 in?
Zip code 37421 is located in Hamilton County, Tennessee. The primary city is Chattanooga.
What is the area code for zip code 37421?
Zip code 37421 in Chattanooga, TN uses area code 423. It is located in the Central (CST/CDT) timezone.
Is zip code 37421 a good place to live?
Zip code 37421 (Chattanooga, TN) has a cost of living index of 98 (100 = national average), a median household income of $79,958, and median home values of $299,600. The median age is 41.1. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 37421?
The cost of living index for zip code 37421 (Chattanooga, TN) is 98, where 100 represents the national average. This area is below the national average. Median home value: $299,600.
What schools serve zip code 37421?
Zip code 37421 in Chattanooga, Tennessee is served by the local school district of Hamilton County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.