What is the median home value in ZIP 37721 in Knox County, TN?

The median home value in ZIP 37721 in Knox County, TN is $323,221, according to the latest Census ACS 5-Year Estimates.

How much new construction is happening in Knox County, TN?

Knox County has 487,401 residents and issued 5,244 building permits over the trailing twelve months, according to the Census Building Permits Survey.

Knoxville, TN · Tennessee

Knox County

ZIP 37721

487,401 residents5,244 permits TTM$71,662 median HHI23 ZIP codesUpdated April 16, 2026

Investor first look

Median home value

$279,700

ACS 5-Year

Cap rate proxy

6.3%

FMR × 0.65 ÷ Home Value

Rent-to-income

19.8%

HUD FMR ÷ ACS HHI

Net migration

+1.88%

IRS SOI

Permits (TTM)

5,244

Census BPS

Climate risk

92.1

FEMA NRI (0–100)

ZIP 37721

Median home value

$323,221

Gross yield

5.1%

Cap rate

4.4%

Rent gap

14.5%

Affordability

P/I: 4.5R/I: —

Section 8 detail

SAFMR: $1,380Rent: $1,180Gap: 16.9%

ZIP code breakdown23 ZIP codes

ZIP	Median home value	Rent (FMR 2BR)	Gross yield	Cap rate	Rent gap
37915	$200,188	$1,220	7.3%	7.1%	3.3%
37917	$251,797	$1,630	7.8%	7.7%	1.4%
37914	$247,896	$1,330	6.4%	7.2%	-12.1%
37929	$279,700county est.	$1,530	6.6%	5.1%	22.9%
37921	$286,674	$1,530	6.4%	7.7%	-19.7%

Ranked by composite score

Median home value	Rent (FMR 2BR)	Gross yield	Cap rate	Rent gap
$371,858	$1,470	4.7%	7.2%	-51.6%
$315,161	$1,330	5.1%	6.8%	-34.1%
$353,231	$1,330	4.5%	6.5%	-44.3%
$327,684	$1,440	5.3%	5.8%	-10.8%
$285,349	$1,380	5.8%	5.5%	5.5%
$394,197	$1,660	5.1%	5.3%	-5.1%
$272,745	$1,080	4.8%	5.2%	-9.3%
$291,619	$1,100	4.5%	4.9%	-7.3%
$425,310	$1,840	5.2%	4.8%	6.9%
$477,384	$1,500	3.8%	4.8%	-26.9%
$323,221	$1,380	5.1%	4.4%	14.5%
$525,710	$1,910	4.4%	4.4%	-0.3%
$332,971	$1,310	4.7%	4.3%	9.9%
$638,228	$2,210	4.2%	4.0%	2.8%
$647,346	$1,840	3.4%	4.0%	-17.8%
$382,195	$1,460	4.6%	3.7%	19.2%
$537,834	$1,690	3.8%	3.6%	4.3%
$625,547	$2,090	4.0%	3.5%	13.9%

Demographics

Owner-occupied

64.9%

Census ACS

Vacancy rate

8.1%

Census ACS

Bachelor's degree +

40.2%

Census ACS

Rent burdened

46.0%

Census ACS (>30% income)

Median age

37.3

Census ACS

Data sources

U.S. Census Bureau — American Community Survey 5-Year Estimates

U.S. Census Bureau — Building Permits Survey

U.S. Department of Housing and Urban Development — Fair Market Rents / Small Area Fair Market Rents (SAFMR)

Internal Revenue Service — Statistics of Income Migration Data

FEMA — National Risk Index

Last updated: April 16, 2026

Knox County

See all 23 ZIPs ranked by yield and cap rate