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ZIP CODE TABULATION AREA

37921

Tennessee · 28,717 residents · 15.9 sq mi
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ZIP 37921 is a ZIP code of 28,717 people in Knox County. This skews young, with a median age of 34.6. About 26% of adults have finished a four-year degree. The typical home is worth $226,300. Density works out to 1,806 people per square mile. The foreign-born share is 7%. Among the 22 ZIP codes in Knox County, 37921 ranks 15th by median household income.

$60,013
US average: $82,259
$30,928
US average: $44,673
$226,300
US average: $376,019
26.3%
US average: 35.6%
Land area
15.9 sq mi
Age, sex & households
Under 18
23.3%
Age 65+
12.9%
47.4%
52.6%
2.46 people
Race & ethnicity · 2024
2024
White, non-Hispanic63.8%(18,309)
Black20.1%(5,773)
Hispanic / Latino10.4%(2,982)
Asian0.9%(266)
Other4.8%(1,387)
67
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Housing
3.8
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Within Knox County
Income rank vs other ZIPs
LOWEST15TH OF 22HIGHEST
Adjacent ZIPs
37721$64,892
37806$59,605
37849$84,275
37871$70,938
Frequently asked

How many people live in ZIP code 37921?

ZIP code 37921 has about 28,717 residents according to the 2024 American Community Survey.

What is the median household income in ZIP code 37921?

The typical household in ZIP code 37921 earns about $60,013 a year. Half of households make more than that, and half make less.

Is ZIP code 37921 expensive?

In ZIP code 37921, the median home is worth about $226,300, and the typical rent is about $1,233 a month.

How educated are people in ZIP code 37921?

About 26.3% of adults age 25 and over in ZIP code 37921 hold a bachelor's degree or higher.

What is the poverty rate in ZIP code 37921?

About 17.2% of people in ZIP code 37921 live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR · ZCTA · UPDATED 2024