37421 ZIP Code — Chattanooga, TN
Hamilton County, Tennessee
ZIP code 37421 is located in Chattanooga, Tennessee, within Hamilton County. It covers approximately 31.70 square miles and serves a population of 52,507 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 423.
About ZIP code 37421
The housing stock consists of a mix of housing types. Most homes were built in the 1990s, giving the area an established character. Median home value is $265,000. Owner-occupancy sits near the national average at 59%.
The gap between median ($76,562) and mean household income suggests income inequality — a small number of higher earners pull the average up.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 21 minutes is near the national average.
Educational attainment is near the national average, with 37% of residents holding a bachelor's degree or higher.
52,507
population
31.70
sq mi land
Standard
ZIP type
Eastern (ET)
timezone
37421 ZIP code map
Cities in ZIP code 37421
Below are the cities the US Postal Service accepts for ZIP code 37421. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Chattanooga | Preferred |
Nearby ZIP codes
37411 Chattanooga (4.3 mi)
37412 Chattanooga (4.3 mi)
37416 Chattanooga (5.8 mi)
37406 Chattanooga (5.9 mi)
37404 Chattanooga (6.6 mi)
37302 Apison (7.6 mi)
37363 Ooltewah (7.7 mi)
37407 Chattanooga (7.8 mi)
37403 Chattanooga (7.9 mi)
30742 Fort Oglethorpe (8.2 mi)
37408 Chattanooga (8.7 mi)
37450 Chattanooga (8.8 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 52,507 |
| Population density | 1,656 / sq mi |
| State FIPS | 47 |
| County FIPS | 065 |
| Geography | |
|---|---|
| Land area | 31.70 sq mi |
| Water area | 0.01 sq mi |
| Latitude | 35.0292 |
| Longitude | -85.1551 |
| Timezone | Eastern (ET) |
| Area code | 423 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 38.2% | 44.3% | 45.7% |
| $50k – $100k | 31.2% | 30.0% | 30.9% |
| $100k – $200k | 23.4% | 19.5% | 18.3% |
| Over $200k | 7.2% | 6.2% | 5.1% |
Demographics & statistics
52,507
Population
1,656
People per sq mi
40.9
Median age
$76,562
Median household income
$44,081
Per capita income
$265,000
Median home value
$1,224
Median monthly rent
59.0%
Home ownership
10.5%
Poverty rate
3.9%
Unemployment
14,700
Housing units
37.4%
Bachelor's or higher
Age distribution
Male
Female
1,345
Under 5
1,470
1,266
5–9
1,384
1,525
10–14
1,666
1,279
15–19
1,398
1,324
20–24
1,448
3,937
25–34
4,302
3,135
35–44
3,426
3,344
45–54
3,654
1,572
55–59
1,718
1,786
60–64
1,952
2,694
65–74
2,945
1,391
75–84
1,521
490
85+
535
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 10,421 | 19.8% |
| 18 and over | 42,086 | 80.2% |
| 65 and over | 9,576 | 18.2% |
| Median age | 40.9 years | |
Race & ethnicity
White
62.5%
Black or African American
21%
Hispanic or Latino
5%
Two or more races
4.8%
Asian
4.3%
Other race
2.2%
American Indian / Alaska Native
0.2%
| Group | Count | % |
|---|---|---|
| White | 34,510 | 62.5% |
| Black or African American | 11,626 | 21% |
| Hispanic or Latino | 2,741 | 5% |
| Two or more races | 2,656 | 4.8% |
| Asian | 2,360 | 4.3% |
| Other race | 1,227 | 2.2% |
| American Indian / Alaska Native | 128 | 0.2% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 38.2% | 44.3% | 45.7% |
| $50k – $100k | 31.2% | 30.0% | 30.9% |
| $100k – $200k | 23.4% | 19.5% | 18.3% |
| Over $200k | 7.2% | 6.2% | 5.1% |
Under $10k
3.2%
$10k–$15k
3.4%
$15k–$25k
7.0%
$25k–$35k
7.3%
$35k–$50k
11.7%
$50k–$75k
16.2%
$75k–$100k
13.9%
$100k–$150k
18.3%
$150k–$200k
9.1%
$200k+
9.9%
| Range | % of households |
|---|---|
| Under $10k | 3.2% |
| $10k–$15k | 3.4% |
| $15k–$25k | 7.0% |
| $25k–$35k | 7.3% |
| $35k–$50k | 11.7% |
| $50k–$75k | 16.2% |
| $75k–$100k | 13.9% |
| $100k–$150k | 18.3% |
| $150k–$200k | 9.1% |
| $200k+ | 9.9% |
| Median income | $76,562 |
Housing
Home values
Under $50k
2.5%
$50k–$100k
2.2%
$100k–$150k
5.2%
$150k–$200k
16.3%
$200k–$300k
37.7%
$300k–$500k
28.0%
$500k–$1M
7.2%
$1M+
1.0%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $265,000 |
| Median rent / month | $1,224 |
| Owner occupied | 59.0% |
| Renter occupied | 41.0% |
| Vacant | 7.9% |
| Single-family detached | 58.2% |
| Large apartment buildings | 13.1% |
| Mobile homes | 1.2% |
| Median rooms | 5.8 |
| Avg household size (owned) | 2.47 |
Year built
| Era | % |
|---|---|
| 2020 or later | 1.0% |
| 2010–2019 | 12.4% |
| 2000–2009 | 16.6% |
| 1990–1999 | 18.7% |
| 1980–1989 | 14.8% |
| 1970–1979 | 16.3% |
| 1960–1969 | 10.6% |
| 1950–1959 | 6.5% |
| 1940–1949 | 1.2% |
| 1939 or earlier | 1.8% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 2.5% |
| 1 bedroom | 13.4% |
| 2 bedrooms | 23.5% |
| 3 bedrooms | 36.2% |
| 4 bedrooms | 18.6% |
| 5+ bedrooms | 5.7% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 4.3% |
| 1 vehicle | 35.1% |
| 2 vehicles | 40.1% |
| 3 or more | 20.5% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 31.5% |
| Electricity | 67.1% |
| Propane / LP gas | 0.7% |
| Fuel oil | 0.1% |
| Wood | 0.1% |
| No fuel used | 0.5% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 9,382 | 43.1% |
| Cohabiting couple | 1,386 | 6.4% |
| Male householder, no spouse | 4,121 | 19.0% |
| Female householder, no spouse | 6,857 | 31.5% |
| Households with children under 18 | 5,509 | 25.3% |
| Households with seniors (65+) | 6,725 | 30.9% |
| Average household size | 2.33 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 35.1% | 29.4% |
| Married | 49.8% | 43.7% |
| Separated | 0.8% | 1.0% |
| Widowed | 4.0% | 10.5% |
| Divorced | 10.2% | 15.3% |
Education
Less than 9th grade
3.3%
Some HS, no diploma
4.7%
HS graduate
22.8%
Some college, no degree
22.1%
Associate's degree
9.7%
Bachelor's degree
23.2%
Graduate / professional
14.2%
| Metric | % |
|---|---|
| HS diploma or higher | 92.1% |
| Bachelor's or higher | 37.4% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 741 | 6.8% |
| Kindergarten | 368 | 3.4% |
| Elementary school | 5,309 | 48.9% |
| High school | 2,052 | 18.9% |
| College / grad school | 2,378 | 21.9% |
Employment
Industry of employment
Education & healthcare
23.2%
Retail trade
12.6%
Manufacturing
12.3%
Finance & real estate
10.3%
Professional & management
10.1%
Arts, food & hospitality
9.6%
Transportation & utilities
6.0%
Other services
5.8%
Construction
4.7%
Public administration
3.2%
Wholesale trade
1.0%
Information
0.9%
Agriculture & mining
0.3%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 44.4% |
| Service | 13.2% |
| Sales & office | 22.6% |
| Natural resources & construction | 4.6% |
| Production & transportation | 15.1% |
Employment type
| Type | % |
|---|---|
| Private sector | 82.9% |
| Government | 11.2% |
| Self-employed | 5.8% |
| Unpaid family workers | 0.1% |
Commute
| Method | % |
|---|---|
| Drive alone | 79.8% |
| Carpool | 8.6% |
| Public transit | 0.4% |
| Walk | 0.3% |
| Work from home | 9.4% |
| Other means | 1.6% |
| Avg commute (minutes) | 20.6 |
Poverty
All people
10.5%
Under 18 years
17.2%
18 and over
8.9%
Married-couple families
4.9%
Female-led households
15.4%
Income support
| Source | % of households |
|---|---|
| Social Security | 29.6% |
| Retirement income | 23.4% |
| Supplemental Security | 4.2% |
| Cash public assistance | 1.2% |
| Food stamps / SNAP | 7.1% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 29.3% |
| High blood pressure | 36.1% |
| High cholesterol | 35.4% |
| Diabetes | 11.2% |
| Heart disease | 6.4% |
| Stroke | 3.1% |
| Asthma | 9.8% |
| Arthritis | 26.0% |
| Kidney disease | 2.9% |
| Pulmonary disease | 6.8% |
| Cancer | 6.9% |
| Behavior / access | % |
|---|---|
| Smoking | 17.3% |
| Binge drinking | 14.2% |
| No physical activity | 22.1% |
| Less than 7 hrs sleep | 33.7% |
| Depression | 23.7% |
| Fair or poor health | 13.7% |
| Poor mental health | 15.3% |
| Poor physical health | 9.8% |
| No health insurance | 14.6% |
| Visited doctor (checkup) | 74.9% |
| Visited dentist | 64.5% |
| Cholesterol screening | 91.3% |
| Teeth loss | 13.2% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2,863 | 6.8% |
| Disability | % |
|---|---|
| Any disability | 13.6% |
| Under 18 | 2.5% |
| 18–64 years | 12.2% |
| 65 and over | 31.1% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 72.3% |
| Public insurance | 30.2% |
| No insurance | 10.7% |
| Uninsured under 19 | 6.7% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 49,692 | 94.6% |
| Spanish | 2,331 | 4.7% |
| Other Indo-European | 1,222 | 2.5% |
| Asian & Pacific Islander | 529 | 1.1% |
| Other languages | 512 | 1.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 48,022 | 91.5% |
| Born in same state | 47,540 | 90.5% |
| Born in different state | 26,333 | 50.2% |
| Foreign born | 482 | 0.9% |
| Naturalized citizen | 4,485 | 8.5% |
| Not a US citizen | 2,478 | 55.3% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| French | 6,258 | 11.9% |
| Arab | 5,111 | 9.7% |
| Italian | 4,683 | 8.9% |
| English | 561 | 1.1% |
| Polish | 265 | 0.5% |
| Ancestry | Count | % |
|---|---|---|
| German | 225 | 0.4% |
| Irish | 170 | 0.3% |
| Dutch | 115 | 0.2% |
| Norwegian | 54 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 41.4% |
| Internet access | 95.6% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 37421
What part of Chattanooga is ZIP code 37421?
ZIP code 37421 covers a portion of Chattanooga, Tennessee, within Hamilton County.
What county is ZIP code 37421 in?
ZIP code 37421 falls within Hamilton County, Tennessee.
What is the population of ZIP code 37421?
ZIP code 37421 has an estimated population of 52,507 residents, with a density of 1,656 people per square mile.
What is the typical home value in ZIP code 37421?
The median home value in ZIP code 37421 is $265,000.
What is the median household income in ZIP code 37421?
The median household income in ZIP code 37421 is $76,562, above the national median of ~$75,000.
What timezone is ZIP code 37421 in?
ZIP code 37421 observes the EST timezone.