Zip code 37721: Corryton, Tennessee

Q: What city is zip code 37721?

37721 is assigned to Corryton, Tennessee. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 37721 in?

37721 is mostly in Knox County, but it extends into 1 other county.

Q: What is the population of 37721?

About 14,306 people live in 37721, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 37721?

The median household income in 37721 is $64,892.

Q: What zip codes are near 37721?

The closest zip codes to 37721 are 37806, 37779, 37938, 37924, 37918.

Residential delivery areaKnox CountyEastern Time

Population

14,306

Median household income

$65K

U.S. $81K

Median home value

$233K

U.S. $333K

Median rent

$973/mo

U.S. $1,413

Median age

43.3

U.S. 38.9

Land area

49 sq mi

290 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 37721

37721 is a small-town zip code in Corryton, Tennessee (Knox County), covering 49 sq mi of land. About 14,306 people live here, or 290 per square mile. The median resident is 43.3 years old, compared with 38.9 nationally.

The median household earns $64,892 a year, 20% below the national median of $80,734. 7.8% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $233,300, or 3.6 years of median household income (U.S.: 4.1 years), which makes homes about as affordable as the national average for local earners. 82% of occupied homes are lived in by their owners, and renters pay a median of $973 a month.

18% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 30.3 minutes each way, and 6% of workers work from home. The most common jobs among working residents are in office and administrative support; construction and repair; and management.

How 37721 compares

Sorted from highest to lowest national percentile

Homeownership rate82.3%
84th
StrengthU.S. 65.2% · TN 66.9%209th of 600 in TN
Median age43.3
79th
U.S. 38.9 · TN 38.9268th of 608 in TN
Veterans8%
77th
U.S. 6.2% · TN 7.3%245th of 607 in TN
Average commute30.3 min
75th
U.S. 26.4 min · TN 25.7 min214th of 597 in TN
Residents 65 and older19%
67th
U.S. 17.2% · TN 17.1%309th of 608 in TN
Uninsured rate7.9%
58th
U.S. 8.4% · TN 10%382nd of 607 in TN
Healthcare workers10%
58th
U.S. 9.7% · TN 9.6%251st of 607 in TN
Self-employed workers9.1%
47th
U.S. 10% · TN 9.8%327th of 607 in TN
Government workers13.3%
47th
U.S. 14.5% · TN 13.7%348th of 607 in TN
Broadband access91.1%
42nd
U.S. 91% · TN 89.2%156th of 600 in TN
Residents under 1820.9%
39th
U.S. 22% · TN 22.2%304th of 608 in TN
Housing vacancy5.4%
37th
U.S. 10.1% · TN 10.2%520th of 602 in TN
Median earnings per worker$43,938
36th
U.S. $49,666 · TN $45,229251st of 606 in TN
Unemployment rate3.9%
32nd
U.S. 5.2% · TN 4.7%318th of 607 in TN
Poverty rate7.8%
30th
U.S. 12.5% · TN 13.8%473rd of 600 in TN
Median home value$233,300
29th
U.S. $332,700 · TN $286,700249th of 590 in TN
Median household income$64,892
28th
U.S. $80,734 · TN $69,595249th of 590 in TN
Per capita income$33,223
28th
U.S. $44,673 · TN $39,437288th of 608 in TN
Population density290/sq mi
25th
U.S. 95/sq mi · TN 171/sq mi166th of 608 in TN
Tech workers1.6%
25th
U.S. 3.8% · TN 2.8%265th of 607 in TN
Population14,306
22nd
U.S. 334,922,499 · TN 7,066,383171st of 608 in TN
Median gross rent$973
19th
U.S. $1,413 · TN $1,189213th of 515 in TN
Rent-burdened renters40.9%
18th
StrengthU.S. 51.1% · TN 48.8%339th of 584 in TN
Income inequality (Gini)0.395
18th
StrengthU.S. 0.483 · TN 0.476463rd of 600 in TN
Bachelor's degree or higher17.8%
15th
WeaknessU.S. 35.7% · TN 31.1%333rd of 604 in TN
Work from home6%
12th
U.S. 15.1% · TN 12.9%421st of 608 in TN
Foreign-born residents1.3%
8th
U.S. 14.1% · TN 6.1%356th of 608 in TN
Diversity index13.5
6th
U.S. 61.4 · TN 46.4437th of 608 in TN

Measure	37721	Knox	TN	U.S.	National percentile	Rank in TN
Homeownership rateStrength	82.3%	65.2%	66.9%	65.2%	84th	209th of 600
Median age	43.3	37.4	38.9	38.9	79th	268th of 608
Veterans	8%	6.7%	7.3%	6.2%	77th	245th of 607
Average commute	30.3 min	22.2 min	25.7 min	26.4 min	75th	214th of 597
Residents 65 and older	19%	16.3%	17.1%	17.2%	67th	309th of 608
Uninsured rate	7.9%	8.3%	10%	8.4%	58th	382nd of 607
Healthcare workers	10%	9.9%	9.6%	9.7%	58th	251st of 607
Self-employed workers	9.1%	8.3%	9.8%	10%	47th	327th of 607
Government workers	13.3%	14.4%	13.7%	14.5%	47th	348th of 607
Broadband access	91.1%	89.5%	89.2%	91%	42nd	156th of 600
Residents under 18	20.9%	20.9%	22.2%	22%	39th	304th of 608
Housing vacancy	5.4%	8%	10.2%	10.1%	37th	520th of 602
Median earnings per worker	$43,938	$45,855	$45,229	$49,666	36th	251st of 606
Unemployment rate	3.9%	3.5%	4.7%	5.2%	32nd	318th of 607
Poverty rate	7.8%	12.2%	13.8%	12.5%	30th	473rd of 600
Median home value	$233,300	$320,900	$286,700	$332,700	29th	249th of 590
Median household income	$64,892	$74,222	$69,595	$80,734	28th	249th of 590
Per capita income	$33,223	$43,351	$39,437	$44,673	28th	288th of 608
Population density	290/sq mi	972/sq mi	171/sq mi	95/sq mi	25th	166th of 608
Tech workers	1.6%	3.4%	2.8%	3.8%	25th	265th of 607
Population	14,306	494,148	7,066,383	334,922,499	22nd	171st of 608
Median gross rent	$973	$1,261	$1,189	$1,413	19th	213th of 515
Rent-burdened rentersStrength	40.9%	50.1%	48.8%	51.1%	18th	339th of 584
Income inequality (Gini)Strength	0.395	0.480	0.476	0.483	18th	463rd of 600
Bachelor's degree or higherWeakness	17.8%	41%	31.1%	35.7%	15th	333rd of 604
Work from home	6%	14.4%	12.9%	15.1%	12th	421st of 608
Foreign-born residents	1.3%	6.5%	6.1%	14.1%	8th	356th of 608
Diversity index	13.5	36.2	46.4	61.4	6th	437th of 608

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

15%

5–17

18–24

11%

25–34

14%

35–44

15%

45–54

13%

55–64

12%

65–74

75+

Median age

43.3

Under 18

20.9%

65 and over

19%

Race and ethnicity

White93%
Black2%
Hispanic1%
Asian0.6%
Native American0.1%
Pacific Islander0%
Other1%
Multiracial2%

Diversity index

13.5

U.S. 61.4

Foreign-born

1.3%

U.S. 14.1%

Born in state

71.5%

Language spoken at home (households)

English only

97%

Spanish

Other Indo-European

0.5%

Asian / Pacific

0.1%

Other

0.6%

Households

Households: 5,568
Average household size: 2.6
Family households: 75.3%
Married couples: 61.4%
Living alone: 19.9%
Veterans (of adults): 8%
Male / female: 51% / 49%

Income and poverty

Household income distribution

<$25k

$25–50k

27%

$50–75k

22%

$75–100k

14%

$100–150k

14%

$150–200k

10%

$200k+

Median household income

37721

$64,892

Knox Co.

$74,222

Tennessee

$69,595

United States

$80,734

Per capita income

$33,223

U.S. $44,673

Poverty rate

7.8%

U.S. 12.5%

Households earning $150K+

14.5%

U.S. 23%

Income inequality (Gini)

0.395

U.S. 0.483

Housing

Median home value

37721

$233,300

Knox Co.

$320,900

Tennessee

$286,700

United States

$332,700

Median gross rent

37721

$973

Knox Co.

$1,261

Tennessee

$1,189

United States

$1,413

Types of housing

Single-family

81%

2–4 units

5–19 units

0.2%

20+ units

Mobile home

15%

Boat, RV, van

Housing units: 5,886
Owner-occupied: 82.3%
Vacant: 5.4%
Median year built: 1993
Median rooms: 5.9
Renters paying 30%+ of income: 40.9%
Renters paying 50%+ of income: 11.5%
Home value to income: 3.6× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

87%

Carpooled

Transit

Walked

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

10–19

13%

20–29

25%

30–44

37%

45–59

14%

60+

Average commute

30.3 min

U.S. 26.4 min

Unemployment

3.9%

U.S. 5.2%

In labor force

61.2%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Office and admin

14%

Construction and repair

12%

Management

11%

Transportation and moving

10%

Healthcare

10%

Sales

Cleaning and personal care

Production

Business and finance

Food service

Education

Legal and social services

Engineering and science

Computer and math

Police and fire

Arts, media and sports

0.4%

Farming, fishing and forestry

0.3%

Industries

Health care and social assistance

18%

Retail

13%

Construction

13%

Transportation, warehousing and utilities

Manufacturing

Restaurants and hotels

Professional and technical services

Education

Other services

Finance, insurance and real estate

Admin, support and management

Wholesale

Public administration

Information

Arts and recreation

Agriculture and mining

0.5%

Median earnings per worker

$43,938

U.S. $49,666

Self-employed

9.1%

U.S. 10%

Government workers

13.3%

U.S. 14.5%

Nonprofit workers

5.7%

U.S. 8.8%

Median earnings by type of work

Type of work	37721	U.S.
Management, business, science and arts	$60,479	$74,888
Service	$27,281	$26,804
Sales and office	$36,442	$40,476
Construction and maintenance	$41,883	$49,199
Production and transportation	$45,125	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

10%

High school

40%

Some college

24%

Associate's

Bachelor's

12%

Graduate

High school graduate or higher: 89.9%
Bachelor's degree or higher: 17.8%
Graduate or professional degree: 6.2%
Households with broadband: 91.1%
Cable, fiber or DSL: 71.2%
No internet access: 5.3%
Without health insurance: 7.9%
Limited-English households: 0.2%

Geography

City (USPS): Corryton
State: Tennessee
County: Knox County
Center point: 36.1306° N, 83.8149° W
Land area: 49 sq mi
Water area: under 0.1 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

37721 spans 2 counties

Knox County90% of land
Union County10% of land

Cities and towns within this zip

Plainview7% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 37721

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
37806	Mascot, TN	5.8 mi	3,674	$59,605	$221,400
37779	Luttrell, TN	6.4 mi	3,649	$51,357	$162,900
37938	Knoxville, TN	6.9 mi	17,437	$84,135	$322,500
37924	Knoxville, TN	7.2 mi	14,420	$80,112	$251,200
37918	Knoxville, TN	7.7 mi	45,971	$69,752	$274,900
37901	Knoxville, TN · PO box	7.8 mi	—	—	—
37709	Blaine, TN	8.7 mi	4,177	$75,799	$274,500
37807	Maynardville, TN	8.9 mi	11,069	$62,673	$215,100
37871	Strawberry Plains, TN	9.4 mi	9,926	$70,938	$210,700
37914	Knoxville, TN	10 mi	21,478	$59,856	$218,300
37848	Powder Springs, TN	11 mi	145	—	$167,900
37917	Knoxville, TN	11 mi	24,615	$54,423	$219,200

Zip codes like 37721 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 37721

What city is zip code 37721?

37721 is assigned to Corryton, Tennessee. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 37721 in?

37721 is mostly in Knox County, but it extends into 1 other county.

What is the population of 37721?

About 14,306 people live in 37721, according to the Census Bureau's American Community Survey.

What time zone is 37721 in?

37721 is in Eastern Time.

What is the median household income in 37721?

The median household income in 37721 is $64,892.

What zip codes are near 37721?

The closest zip codes to 37721 are 37806, 37779, 37938, 37924, 37918.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 37721, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.