Hamilton County · Tennessee
ZIP code 37421
- Population
- 52,516
- Median income
- $79,958
- Median home
- $299,600
- Sales tax
- 9.25%
ZCTA residents
Household, past 12 months
Owner-occupied value
Combined state + local
Quick answer
ZIP 37421 sits in Hamilton County, Tennessee and is home to 52,516 people. Median household income is $79,958, the median home is worth $299,600 and median gross rent is $1,313. 60.6% of households own their home, and purchases are taxed at 9.25% combined.
- County
- Hamilton County
- State
- Tennessee (TN)
- Area codes
- 423
FIPS 47065
638 ZIPs covered
NANPA codes serving this area
The numbers for 37421
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 52,516ZIP 37421 residents
- Median household income
- $79,958Past 12 months, inflation adjusted
- Median home value
- $299,600Owner-occupied units
- Median gross rent
- $1,313Rent plus utilities, monthly
- Median age
- 41.1 yrsAll residents
- Homeownership rate
- 60.6%Owner-occupied households
Sales tax in 37421
What a purchase inside this ZIP costs at checkout.
This ZIP falls inside the Chattanooga rate area, so state, county, city and district levies are published here as a full stack.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 37421 compares
ZIP 37421 against the median ZIP in Hamilton County and across Tennessee.
| Measure | ZIP 37421 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $79,958 | $66,389 | $59,143 | +35% |
| Median home value | $299,600 | $263,100 | $195,100 | +54% |
| Median gross rent | $1,313 | $1,089 | $885 | +48% |
| Population | 52,516 | 8,362 | 4,324 | +1115% |
Medians are computed across the 26 ZIP areas in Hamilton County and the 638 ZIP areas in Tennessee.
Statewide rank
Where this ZIP places among all 638 Tennessee ZIP areas.
- Income
- #110
- Home value
- #102
- Population
- #19
richer than 82% of 596 state ZIPs
above 83% of 589 state ZIPs
larger than 97% of 638 state ZIPs
Comparable ZIP codes
Tennessee ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under Hamilton County.
ZIP 37421 questions
Common questions about this ZIP code.
- Where is ZIP code 37421?
- ZIP 37421 lies mostly in Hamilton County, Tennessee. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 37421?
- Purchases are taxed at 9.25% combined, built from the Chattanooga jurisdiction stack.
- Is 37421 expensive to live in?
- Median rent runs $1,313 a month, about 20% of median household income, and the median home is worth $299,600 — +54% against the typical Tennessee ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Tennessee Department of Revenue — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.