Castalian Springs, TN demographics:
population, income, and more

Total population
678
4.6% year-over-year change
Median household income
$57,917/yr
-32.7% year-over-year change
Housing units
318
14.8% year-over-year change

Castalian Springs population

How many people live in Castalian Springs

Castalian Springs is home to 678 residents, according to the most recent Census data. Gender-wise, 47.9% of Castalian Springs locals are male, and 52.1% are female.

Total population
678
4.6% year-over-year change
Gender ratio
Male
47.9%
325
Female
52.1%
353
Value Percent YoY change
Male 325 47.9% -0.3%
Female 353 52.1% 9.6%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Castalian Springs is 44, with the population distributed as follows: about 20.4% are children under 15, then 16.2% are in the 15 to 24 age group. Adults between 25 and 44 make up 17% of the population, while another 23.2% fall into the 45 to 64 bracket. Finally, around 23.3% are 65 or older.

Median age
44.1
Age breakdown
Under 15
20.4%
15 to 24
16.2%
25 to 44
17%
45 to 64
23.2%
Over 65
23.3%
Value Percent YoY change
Under 15 138 20.4% 31.4%
15 to 24 110 16.2% 46.7%
25 to 44 115 17% -20.1%
45 to 64 157 23.2% -21.9%
Over 65 158 23.3% 28.5%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Castalian Springs, 99% of the population are US-born citizens, while 1% have gained naturalized citizenship. As for race, 88.8% of locals are Caucasian, 6.2% are African American and 1% have Asian roots. There’s also a share of 4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
99%
Non-U.S.-born citizens
1%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 671 99% 5.0%
Non-U.S.-born citizens 7 1% -22.2%
Racial breakdown
White
88.8%
Black or African American
6.2%
American Indian and Alaska Native
0%
Asian
1%
Native Hawaiian and other Pacific Islander
0%
Two or more races
4%
Other
0%
Value Percent
White 602 88.8%
Black or African American 42 6.2%
Asian 7 1%
Two or more races 27 4%

Households in Castalian Springs

A peek inside Castalian Springs households

Castalian Springs has 293 households, with an average of 2 members in each. Of these, 61.1% are families, while the remaining 38.9% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
293
13.6% year-over-year change
Average people per household
2
Non-family households
114
Family households
179
Value Percent YoY change
Non-family households 114 38.9% 50.0%
Family households 179 61.1% -1.6%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Castalian Springs

The housing landscape of Castalian Springs

Castalian Springs's housing consists of 318 units, with 96.9% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3.1% of the housing landscape.

Housing units
318
14.8% year-over-year change
Housing types
Value Percent
1 unit, detached 308 96.9%
Mobile home 10 3.1%
Homes built since 2020
0
% year-over-year change

The age of buildings in Castalian Springs

In Castalian Springs, the median construction year is 1981. About 3.1% of homes were built before the 1940s, with another 13.8% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 10 3.1% 11.1%
Built between 1940 and 1949 44 13.8% 29.4%
Built between 1950 and 1959 42 13.2% N/A
Built between 1960 and 1969 13 4.1% 8.3%
Built between 1970 and 1979 42 13.2% -17.6%
Built between 1980 and 1989 72 22.6% 56.5%
Built between 1990 and 1999 30 9.4% -62.5%
Built between 2000 and 2009 38 12% 81.0%
Built between 2010 and 2019 27 8.5% 12.5%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Castalian Springs occupancy rates

Meanwhile, 7.9% of all homes on the local market sit vacant.

Occupied housing units
293
13.6% year-over-year change
Occupancy breakdown
Renter occupied
0
Owner occupied
293
Value Percent YoY
change
Owner occupied 293 100% 13.6%
Unoccupied housing units
7.9%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Castalian Springs housing costs

Median housing costs per month
$858/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.

Education in Castalian Springs

Castalian Springs education at a glance

About 36.3% of the population in Castalian Springs went to high school, while 25.2% pursued college studies. Another 4.2% earned an associate degree and 16.8% hold a bachelor’s. Meanwhile, 9.2% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 42 8.4% 82.6%
High school diploma 182 36.3% -11.2%
College diploma 126 25.2% 38.5%
Associate degree 21 4.2% -32.3%
Bachelor's degree 84 16.8% 1.2%
Graduate degree 46 9.2% -37.8%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Castalian Springs

How much people earn in Castalian Springs

The average annual household income in Castalian Springs was $86,953 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -6.1% change from the previous year. At the same time, the median income stood at $57,917, reflecting a -32.7% shift over the same period.

Average household income in Castalian Springs
$86,953/year
-6.1% year-over-year change
Median household income in Castalian Springs
$57,917/year
-32.7% year-over-year change

Castalian Springs income by age

In Castalian Springs, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $71,406. Those with someone between 45 and 64 in charge, often well established professionally, earn $122,976 overall. Overall, 90.7% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $71,406 3.5%
45 - 64 $122,976 -1.8%
Over 65 $36,250 -6.5%
Above poverty level
615
Below poverty level
63
Value Percent YoY
change
Above poverty level 615 90.7% 2.3%
Below poverty level 63 9.3% 34.0%

Employment in Castalian Springs

Workforce and job types in Castalian Springs

The job market in Castalian Springs is powered by 259 working residents, spread across a range of industries and roles. 79.5% of the working population are employed in professional or administrative positions, while 20.5% are in hands-on or service-based jobs. Also, 8.9% run their own businesses, 69.1% are employed by private companies, and 22% work in the public sector.

Workforce demographics

Working population
259
-18.6% year-over-year change
White collar
206
Blue collar
53
Value Percent YoY change
White collar 206 79.5% -26.4%
Blue collar 53 20.5% 39.5%
Employer type
Self employees
8.9%
Private companies
69.1%
Governmental workers
22%
Not for profit companies
0%
Value Percent YoY change
Self employees 23 8.9% -4.2%
Private companies 179 69.1% 1.7%
Governmental workers 57 22% -51.7%

Transportation in Castalian Springs

How people get around in Castalian Springs

In Castalian Springs, the average commute time is 28 minutes.

Commute time
28 min
11.5% year-over-year change
Means of transportation
Value Percent YoY change
Car 225 86.9% -21.3%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Castalian Springs by zipcode?

Zipcode Population Number of households Median income Average income
37031 3,926 1,707 $98,114 $103,845

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FAQs about Castalian Springs demographics 

What is the total population of Castalian Springs?

Castalian Springs has a total population of 678 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +4.6% compared to a year ago.

What is the gender ratio in Castalian Springs?

The gender ratio in Castalian Springs is as follows:
  • 47.9% males (325 residents)
  • 52.1% females (353 residents)

What is the median age in Castalian Springs?

The median age in Castalian Springs is 44.1.

What is the age distribution of the population in Castalian Springs?

The age distribution in Castalian Springs is as follows:
  • Under 15: 20.4% (138 residents)
  • Ages 15-24: 16.2% (110 residents)
  • Ages 25-44: 17% (115 residents)
  • Ages 45-64: 23.2% (157 residents)
  • Over 65: 23.3% (158 residents)

What is the racial and ethnic makeup of Castalian Springs?

The racial and ethnic makeup of Castalian Springs is as follows:
  • White: 88.8% (602 residents)
  • Black or African American: 6.2% (42 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 1% (7 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 4% (27 residents)
  • Other: 0% (0 residents)

What percentage of the population in Castalian Springs are U.S.-born citizens?

U.S.-born citizens represent 99% of the population in Castalian Springs.

How many housing units are there in Castalian Springs?

There are 318 housing units in Castalian Springs, reflecting a +14.8% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Castalian Springs and what is the average household size?

Castalian Springs has a total of 293 households, with an average of 2 people in each.

What is the median household income in Castalian Springs?

Castalian Springs has a median household income of $57,917, representing a -32.7% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Castalian Springs?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 79.5% (206 residents)
  • Blue-collar workers: 20.5% (53 residents)

Places of employment:
  • Self-employed: 8.9% (23 residents)
  • Private companies: 69.1% (179 residents)
  • Governmental workers: 22% (57 residents)
  • Not-for-profit companies: 0% (0 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025