Zip code 37031: Castalian Springs, Tennessee

Q: What city is zip code 37031?

37031 is assigned to Castalian Springs, Tennessee. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 37031 in?

37031 is mostly in Sumner County, but it extends into 1 other county.

Q: What is the population of 37031?

About 3,926 people live in 37031, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 37031?

The median household income in 37031 is $98,114.

Q: What zip codes are near 37031?

The closest zip codes to 37031 are 37087, 37066, 37074, 37022, 37088.

Residential delivery areaSumner CountyCentral Time

Population

3,926

Median household income

$98K

U.S. $81K

Median home value

$353K

U.S. $333K

Median rent

—

U.S. $1,413

Median age

53.5

U.S. 38.9

Land area

38 sq mi

103 people/sq mi

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

About 37031

37031 is a small-town zip code in Castalian Springs, Tennessee (Sumner County), covering 38 sq mi of land. About 3,926 people live here, or 103 per square mile. The median resident is 53.5 years old, compared with 38.9 nationally.

The median household earns $98,114 a year, 22% above the national median of $80,734. 8.3% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $352,600, 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. 94% of occupied homes are lived in by their owners.

21% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 29.1 minutes each way, and 11% of workers work from home. The most common jobs among working residents are in management; transportation and moving goods; and office and administrative support.

How 37031 compares

Sorted from highest to lowest national percentile

Homeownership rate94.1%
99th
StrengthU.S. 65.2% · TN 66.9%33rd of 600 in TN
Rent-burdened renters100%
99th
WeaknessU.S. 51.1% · TN 48.8%17th of 584 in TN
Median age53.5
97th
U.S. 38.9 · TN 38.945th of 608 in TN
Self-employed workers13.3%
84th
U.S. 10% · TN 9.8%136th of 607 in TN
Residents 65 and older20%
74th
U.S. 17.2% · TN 17.1%267th of 608 in TN
Veterans7.6%
73rd
U.S. 6.2% · TN 7.3%285th of 607 in TN
Median household income$98,114
70th
U.S. $80,734 · TN $69,59549th of 590 in TN
Average commute29.1 min
69th
U.S. 26.4 min · TN 25.7 min260th of 597 in TN
Per capita income$44,690
62nd
U.S. $44,673 · TN $39,43795th of 608 in TN
Government workers15%
60th
U.S. 14.5% · TN 13.7%263rd of 607 in TN
Median earnings per worker$49,889
55th
U.S. $49,666 · TN $45,229132nd of 606 in TN
Median home value$352,600
54th
U.S. $332,700 · TN $286,70087th of 590 in TN
Uninsured rate7.1%
52nd
U.S. 8.4% · TN 10%429th of 607 in TN
Tech workers2.6%
45th
U.S. 3.8% · TN 2.8%175th of 607 in TN
Work from home10.5%
37th
U.S. 15.1% · TN 12.9%253rd of 608 in TN
Housing vacancy5.4%
37th
U.S. 10.1% · TN 10.2%525th of 602 in TN
Poverty rate8.3%
34th
U.S. 12.5% · TN 13.8%458th of 600 in TN
Bachelor's degree or higher21.2%
24th
U.S. 35.7% · TN 31.1%250th of 604 in TN
Income inequality (Gini)0.402
22nd
U.S. 0.483 · TN 0.476437th of 600 in TN
Healthcare workers7.5%
21st
U.S. 9.7% · TN 9.6%429th of 607 in TN
Broadband access87.3%
20th
WeaknessU.S. 91% · TN 89.2%277th of 600 in TN
Population density103/sq mi
13th
U.S. 95/sq mi · TN 171/sq mi277th of 608 in TN
Foreign-born residents2.2%
13th
U.S. 14.1% · TN 6.1%278th of 608 in TN
Diversity index19.6
12th
U.S. 61.4 · TN 46.4324th of 608 in TN
Residents under 1815.2%
8th
U.S. 22% · TN 22.2%513th of 608 in TN
Population3,926
6th
U.S. 334,922,499 · TN 7,066,383337th of 608 in TN
Unemployment rate0.7%
1st
StrengthU.S. 5.2% · TN 4.7%543rd of 607 in TN

Measure	37031	Sumner	TN	U.S.	National percentile	Rank in TN
Homeownership rateStrength	94.1%	72%	66.9%	65.2%	99th	33rd of 600
Rent-burdened rentersWeakness	100%	48.8%	48.8%	51.1%	99th	17th of 584
Median age	53.5	39.8	38.9	38.9	97th	45th of 608
Self-employed workers	13.3%	9.6%	9.8%	10%	84th	136th of 607
Residents 65 and older	20%	16.6%	17.1%	17.2%	74th	267th of 608
Veterans	7.6%	7.1%	7.3%	6.2%	73rd	285th of 607
Median household income	$98,114	$90,301	$69,595	$80,734	70th	49th of 590
Average commute	29.1 min	29 min	25.7 min	26.4 min	69th	260th of 597
Per capita income	$44,690	$44,761	$39,437	$44,673	62nd	95th of 608
Government workers	15%	13.2%	13.7%	14.5%	60th	263rd of 607
Median earnings per worker	$49,889	$50,843	$45,229	$49,666	55th	132nd of 606
Median home value	$352,600	$393,100	$286,700	$332,700	54th	87th of 590
Uninsured rate	7.1%	7.5%	10%	8.4%	52nd	429th of 607
Tech workers	2.6%	3.5%	2.8%	3.8%	45th	175th of 607
Work from home	10.5%	16.2%	12.9%	15.1%	37th	253rd of 608
Housing vacancy	5.4%	5.6%	10.2%	10.1%	37th	525th of 602
Poverty rate	8.3%	8.8%	13.8%	12.5%	34th	458th of 600
Bachelor's degree or higher	21.2%	33.6%	31.1%	35.7%	24th	250th of 604
Income inequality (Gini)	0.402	0.433	0.476	0.483	22nd	437th of 600
Healthcare workers	7.5%	9.1%	9.6%	9.7%	21st	429th of 607
Broadband accessWeakness	87.3%	92.8%	89.2%	91%	20th	277th of 600
Population density	103/sq mi	386/sq mi	171/sq mi	95/sq mi	13th	277th of 608
Foreign-born residents	2.2%	4%	6.1%	14.1%	13th	278th of 608
Diversity index	19.6	36.8	46.4	61.4	12th	324th of 608
Residents under 18	15.2%	23.1%	22.2%	22%	8th	513th of 608
Population	3,926	204,424	7,066,383	334,922,499	6th	337th of 608
Unemployment rateStrength	0.7%	3.6%	4.7%	5.2%	1st	543rd of 607

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

12%

5–17

18–24

25–34

13%

35–44

12%

45–54

26%

55–64

13%

65–74

75+

Median age

53.5

Under 18

15.2%

65 and over

20%

Race and ethnicity

White89%
Black3%
Hispanic4%
Asian0.4%
Native American0.0%
Pacific Islander0%
Other0.6%
Multiracial2%

Diversity index

19.6

U.S. 61.4

Foreign-born

2.2%

U.S. 14.1%

Born in state

52.5%

Language spoken at home (households)

English only

92%

Spanish

Other Indo-European

Asian / Pacific

Other

Households

Households: 1,707
Average household size: 2.3
Family households: 72.5%
Married couples: 64.1%
Living alone: 20.6%
Veterans (of adults): 7.6%
Male / female: 50% / 50%

Income and poverty

Household income distribution

<$25k

13%

$25–50k

12%

$50–75k

15%

$75–100k

18%

$100–150k

26%

$150–200k

$200k+

Median household income

37031

$98,114

Sumner Co.

$90,301

Tennessee

$69,595

United States

$80,734

Per capita income

$44,690

U.S. $44,673

Poverty rate

8.3%

U.S. 12.5%

Households earning $150K+

16.1%

U.S. 23%

Income inequality (Gini)

0.402

U.S. 0.483

Housing

Median home value

37031

$352,600

Sumner Co.

$393,100

Tennessee

$286,700

United States

$332,700

Median gross rent

37031

—

Sumner Co.

$1,424

Tennessee

$1,189

United States

$1,413

Types of housing

Single-family

89%

2–4 units

5–19 units

20+ units

Mobile home

11%

Boat, RV, van

Housing units: 1,804
Owner-occupied: 94.1%
Vacant: 5.4%
Median year built: 2001
Median rooms: 6.2
Renters paying 30%+ of income: 100%
Renters paying 50%+ of income: 45.9%
Home value to income: 3.6× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

83%

Carpooled

Transit

0.0%

Walked

Bicycle

Worked from home

10%

Other

Commute time (one way)

<10 min

10–19

23%

20–29

37%

30–44

19%

45–59

60+

11%

Average commute

29.1 min

U.S. 26.4 min

Unemployment

0.7%

U.S. 5.2%

In labor force

67.2%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Management

16%

Transportation and moving

15%

Office and admin

15%

Construction and repair

10%

Healthcare

Sales

Production

Food service

Business and finance

Cleaning and personal care

Education

Computer and math

Engineering and science

Legal and social services

Police and fire

0.9%

Arts, media and sports

0.6%

Farming, fishing and forestry

Industries

Transportation, warehousing and utilities

19%

Construction

11%

Manufacturing

10%

Education

Health care and social assistance

Retail

Finance, insurance and real estate

Admin, support and management

Professional and technical services

Other services

Restaurants and hotels

Public administration

Wholesale

Arts and recreation

Information

Agriculture and mining

0.9%

Median earnings per worker

$49,889

U.S. $49,666

Self-employed

13.3%

U.S. 10%

Government workers

15%

U.S. 14.5%

Nonprofit workers

3.5%

U.S. 8.8%

Median earnings by type of work

Type of work	37031	U.S.
Management, business, science and arts	$63,697	$74,888
Service	$21,563	$26,804
Sales and office	$48,827	$40,476
Construction and maintenance	$57,868	$49,199
Production and transportation	$45,121	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

39%

Some college

24%

Associate's

Bachelor's

13%

Graduate

High school graduate or higher: 92.7%
Bachelor's degree or higher: 21.2%
Graduate or professional degree: 8.6%
Households with broadband: 87.3%
Cable, fiber or DSL: 64%
No internet access: 11.6%
Without health insurance: 7.1%
Limited-English households: 0%

Geography

City (USPS): Castalian Springs
State: Tennessee
County: Sumner County
Center point: 36.3775° N, 86.3012° W
Land area: 38 sq mi
Water area: 1.8 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

37031 spans 2 counties

Sumner County78% of land
Trousdale County22% of land

Cities and towns within this zip

Hartsville/Trousdale County22% of zip
Castalian Springs (unincorporated)15% of zip

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

Zip codes near 37031

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
37087	Lebanon, TN	8 mi	56,655	$82,143	$386,200
37066	Gallatin, TN	8.7 mi	64,650	$81,614	$405,400
37074	Hartsville, TN	8.9 mi	10,932	$71,914	$329,600
37022	Bethpage, TN	9.5 mi	5,728	$79,375	$287,900
37088	Lebanon, TN · PO box	12 mi	—	—	—
37151	Riddleton, TN	15 mi	457	$102,168	$327,500
37057	Dixon Springs, TN	15 mi	1,016	$78,940	$224,200
37071	Gladeville, TN · PO box	15 mi	—	—	—
37136	Norene, TN · PO box	15 mi	—	—	—
37186	Westmoreland, TN	16 mi	10,709	$59,545	$221,500
37121	Mount Juliet, TN · PO box	17 mi	—	—	—
37122	Mount Juliet, TN	17 mi	68,492	$112,967	$486,500

Zip codes like 37031 elsewhere

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

Questions about 37031

What city is zip code 37031?

37031 is assigned to Castalian Springs, Tennessee. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 37031 in?

37031 is mostly in Sumner County, but it extends into 1 other county.

What is the population of 37031?

About 3,926 people live in 37031, according to the Census Bureau's American Community Survey.

What time zone is 37031 in?

37031 is in Central Time.

What is the median household income in 37031?

The median household income in 37031 is $98,114.

What zip codes are near 37031?

The closest zip codes to 37031 are 37087, 37066, 37074, 37022, 37088.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 37031, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.