Castalian Springs ZIP Codes — Sumner County, TN

There is one unique ZIP code in Castalian Springs, Tennessee and it is 37031. Area code: 615.

ZIP codes

38.25

sq mi land

1.76

sq mi water

615

area code

Castalian Springs, TN ZIP code map

About Castalian Springs, TN

Castalian Springs, Tennessee, is a small but charming community nestled in Sumner County. Known for its scenic beauty and close-knit atmosphere, this city is a hidden gem in the Nashville metropolitan area. Residents and visitors alike enjoy the natural landscapes and historical sites that contribute to the town's unique character.

Location & geography

Castalian Springs is located approximately 40 miles northeast of Nashville, providing a tranquil respite from the hustle and bustle of the city. The area encompasses a total of 38.25 square miles of land and includes 1.76 square miles of water, offering a blend of rural charm and natural beauty. Neighboring cities include Gallatin to the west, Hendersonville to the south, Lafayette to the east, and Portland to the north, each accessible via local highways.

Community & economy

The community of Castalian Springs is characterized by its friendly residents and vibrant local culture. Predominantly agricultural, the local economy is supported by various small businesses and industries that cater to the needs of the population. Daily life here revolves around community events, outdoor activities, and the appreciation of the area's rich history.

Transportation

Castalian Springs is accessible via several highways including U.S. Route 31E, which connects the city to Nashville and surrounding areas. The nearest named airport is Nashville International Airport, located about 45 miles southwest of the city. Public transportation options are limited, making personal vehicles the primary mode of transit.

History

Castalian Springs was founded in the early 19th century and quickly developed a reputation for its natural springs, which attracted visitors seeking health benefits. Key industries historically included agriculture and tourism, with many notable events focusing on the wellness and recreational opportunities offered by the area. The town's rich heritage can still be felt today through its preserved sites and community events.

Did you know?

One surprising fact about Castalian Springs is that it is home to the historic Wynnewood State Historic Site, which features the remains of a large log house that once served as a resort in the mid-1800s. Additionally, the city maintains a commitment to preserving its natural beauty, making it a popular spot for nature enthusiasts.

ZIP codes for Castalian Springs, TN (1)

ZIP code	City	County	Map
37031	Castalian Springs	Sumner	View map

Demographics & statistics

4,089

Population

48.0

Median age

$80,417

Median household income

$43,330

Per capita income

$277,200

Median home value

$992

Median monthly rent

88.1%

Home ownership

6.5%

Poverty rate

0.9%

Unemployment

1,619

Housing units

19.1%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

128

15–19

121

20–24

305

25–34

291

256

35–44

243

271

45–54

259

283

55–59

270

195

60–64

186

247

65–74

235

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	558	13.6%
18 and over	3,531	86.4%
65 and over	731	17.9%
Median age	48.0 years

Race & ethnicity

White 88.3%

Black or African American 3.2%

Hispanic or Latino 3.2%

Two or more races 2.6%

Other race 2.3%

Native Hawaiian / Pacific Islander 0.4%

Group	Count	%
White	3,726	88.3%
Black or African American	137	3.2%
Hispanic or Latino	133	3.2%
Two or more races	111	2.6%
Other race	98	2.3%
Native Hawaiian / Pacific Islander	16	0.4%

Household income

Under $10k 3.4%

$10k–$15k 0.2%

$15k–$25k 5.3%

$25k–$35k 9.7%

$35k–$50k 8.6%

$50k–$75k 19.0%

$75k–$100k 18.4%

$100k–$150k 24.7%

$150k–$200k 5.5%

$200k+ 5.2%

Range	% of households
Under $10k	3.4%
$10k–$15k	0.2%
$15k–$25k	5.3%
$25k–$35k	9.7%
$35k–$50k	8.6%
$50k–$75k	19.0%
$75k–$100k	18.4%
$100k–$150k	24.7%
$150k–$200k	5.5%
$200k+	5.2%
Median income	$80,417

Housing

Home values

Under $50k 2.7%

$50k–$100k 7.2%

$100k–$150k 6.8%

$150k–$200k 10.8%

$200k–$300k 27.5%

$300k–$500k 30.4%

$500k–$1M 13.1%

$1M+ 1.4%

Housing overview

Metric	Value
Median home value	$277,200
Median rent / month	$992
Owner occupied	88.1%
Renter occupied	11.9%
Vacant	7.8%
Single-family detached	86.5%
Large apartment buildings	0.0%
Mobile homes	12.8%
Median rooms	6.3
Avg household size (owned)	2.50

Year built

Era	%
2020 or later	1.2%
2010–2019	18.1%
2000–2009	25.2%
1990–1999	17.2%
1980–1989	8.0%
1970–1979	16.8%
1960–1969	5.7%
1950–1959	0.0%
1940–1949	2.4%
1939 or earlier	5.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.1%
2 bedrooms	12.9%
3 bedrooms	72.1%
4 bedrooms	12.2%
5+ bedrooms	1.8%

Vehicles per household

Vehicles	% of households
No vehicle	0.6%
1 vehicle	25.5%
2 vehicles	42.7%
3 or more	31.2%

Heating fuel

Fuel type	%
Utility gas	9.4%
Electricity	71.6%
Propane / LP gas	14.7%
No fuel used	4.3%

Households & families

Household type	Count	%
Married-couple family	1,117	66.6%
Cohabiting couple	88	5.2%
Male householder, no spouse	194	11.6%
Female householder, no spouse	278	16.6%
Households with children under 18	379	22.6%
Households with seniors (65+)	496	29.6%
Average household size	2.42

Marital status

Status	Male	Female
Never married	13.0%	18.2%
Married	69.6%	63.9%
Separated	0.6%	0.0%
Widowed	2.2%	6.9%
Divorced	14.7%	11.0%

Education

Less than 9th grade 3.7%

Some HS, no diploma 3.3%

HS graduate 44.6%

Some college, no degree 21.2%

Associate's degree 8.2%

Bachelor's degree 13.1%

Graduate / professional 6.0%

Metric	%
HS diploma or higher	93.0%
Bachelor's or higher	19.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	72	12.0%
Kindergarten	17	2.8%
Elementary school	263	43.7%
High school	109	18.1%
College / grad school	141	23.4%

Employment

Industry of employment

Education & healthcare 15.5%

Other services 13.5%

Manufacturing 12.2%

Transportation & utilities 12.2%

Retail trade 10.8%

Arts, food & hospitality 8.8%

Professional & management 6.6%

Construction 5.9%

Finance & real estate 4.7%

Public administration 4.3%

Wholesale trade 3.4%

Agriculture & mining 1.2%

Information 1.0%

Occupation

Category	%
Management, business & arts	37.4%
Service	14.0%
Sales & office	19.7%
Natural resources & construction	10.3%
Production & transportation	18.6%

Employment type

Type	%
Private sector	72.5%
Government	19.6%
Self-employed	8.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	73.7%
Carpool	15.5%
Public transit	0.0%
Walk	0.0%
Other means	0.5%
Avg commute (minutes)	34.8

Poverty

All people 6.5%

Under 18 years 5.0%

18 and over 6.7%

Married-couple families 2.7%

Female-led households 9.1%

Income support

Source	% of households
Social Security	34.8%
Retirement income	19.9%
Supplemental Security	4.8%
Cash public assistance	2.6%
Food stamps / SNAP	2.9%

Health indicators

Condition	%
High blood pressure	35.2%
High cholesterol	34.5%
Heart disease	6.3%
Stroke	2.9%
Asthma	10.2%
Arthritis	27.3%
Kidney disease	2.6%
Pulmonary disease	7.9%
Cancer	6.2%

Behavior / access	%
Binge drinking	15.7%
No physical activity	24.5%
Less than 7 hrs sleep	33.1%
Fair or poor health	14.7%
Poor mental health	17.0%
Poor physical health	10.9%
No health insurance	15.8%
Visited doctor (checkup)	72.7%
Visited dentist	60.5%
Cholesterol screening	90.2%
Teeth loss	15.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	309	8.8%

Disability	%
Any disability	19.0%
Under 18	3.6%
18–64 years	12.6%
65 and over	54.9%

Health insurance coverage

Type	%
Private insurance	75.0%
Public insurance	28.3%
Uninsured under 19	15.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,962	96.9%
Spanish	30	0.8%
Other Indo-European	30	0.8%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,029	98.5%
Born in same state	3,964	96.9%
Born in different state	2,313	56.6%
Foreign born	65	1.6%
Naturalized citizen	60	1.5%
Not a US citizen	45	75.0%

Ancestry

Ancestry	Count	%
Arab	925	22.6%
French	590	14.4%
Italian	366	9%

Ancestry	Count	%
English	116	2.8%
German	16	0.4%
Polish	10	0.2%

Technology access

Metric	% of households
Computer access	41.0%
Internet access	87.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Castalian Springs, TN have?

Castalian Springs, TN has one ZIP code: 37031. Each ZIP code serves a distinct delivery area within the city and surrounding region.