Castalian Springs, TN Demographics

Population 4,425 · Census ACS 2020–24

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Castalian Springs, TN map of median age by neighborhood
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Population and households in Castalian Springs

Household size in Castalian Springs

Household size, people per household
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–102.582.572.532.68
2010–143.102.632.572.73
2015–192.542.642.572.71
2020–242.342.562.532.65
Change−0.24−0.01+0.00−0.03
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Castalian Springs is a place of small households, averaging 2.34 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has dropped from 2.58, but in a place this small, survey estimates can swing a lot from one release to the next.

Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).

Median age in Castalian Springs

Median age, years
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–1041.636.638.337.7
2010–1437.737.339.238.6
2015–1940.337.939.939.6
2020–2445.338.039.940.1
Change+3.7+1.5+1.6+2.3
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Castalian Springs skews older: half of its residents are older than 45.3, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.

Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).

Single-parent households in Castalian Springs

Single-parent households, % of households
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–107.2%11.7%12.2%12.3%
2010–1413.9%11.6%12.0%12.3%
2015–197.3%10.7%11.6%11.6%
2020–244.9%10.7%11.8%11.6%
Change−2.4 pts−1.0 pts−0.4 pts−0.6 pts
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Single parents head only 4.9% of households in Castalian Springs, well below the national share of 11.6%.

Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).

Housing in Castalian Springs

Renters in Castalian Springs

Renters, % of occupied homes
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–1011.3%31.5%30.4%33.3%
2010–1415.8%34.2%32.9%35.6%
2015–199.0%34.2%33.7%36.0%
2020–2411.1%34.8%33.1%34.8%
Change−0.3 pts+3.3 pts+2.6 pts+1.5 pts
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Castalian Springs is overwhelmingly a place of homeowners: only 11.1% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Just over four in ten owners (42.8%) have paid off their mortgages, about the same as nationally.

Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).

Vacant homes in Castalian Springs

Vacant homes, % of all homes
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–1016.1%9.1%11.5%11.4%
2010–1416.3%8.8%11.8%11.4%
2015–194.9%8.5%11.8%11.1%
2020–248.2%8.2%10.1%9.6%
Change−7.9 pts−0.9 pts−1.4 pts−1.8 pts
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About as many homes sit empty in Castalian Springs as nationally: 8.2%, against 9.6%.

Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).

Age of homes in Castalian Springs

Age of homes, median year built
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–101992198419811974
2010–141991198519821975
2015–191996198819831977
2020–241999199219861980
Change+6+9+6+6
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Much of the housing in Castalian Springs is relatively new: half of its homes were built after 1999, compared with 1980 for the U.S. as a whole.

Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).

Rent in Castalian Springs

Rent, per month
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–10$730$905$761$965
2010–14$907$986$837$1,040
2015–19$957$1,212$961$1,213
2020–24$1,259$1,653$1,286$1,571
Change+$529+$749+$526+$606
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A typical rental in Castalian Springs costs $1,259 a month with utilities, below the national median of $1,571. Rent takes 28.7% of the typical renter's income, just under the 30% mark often used to define affordable rent.

Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).

Education in Castalian Springs

Bachelor's degrees in Castalian Springs

Bachelor's degrees, % of adults 25+
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–1013.7%30.1%23.9%28.4%
2010–1410.2%32.0%25.3%29.6%
2015–1916.7%36.3%27.9%32.1%
2020–2422.4%41.0%31.4%35.6%
Change+8.7 pts+10.9 pts+7.5 pts+7.2 pts
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Fewer adults in Castalian Springs have a four-year degree than in the country as a whole: 22.4%, against 35.6% nationally.

Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

High school graduates in Castalian Springs

High school graduates, % of adults 25+
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–1083.5%86.5%83.3%84.9%
2010–1482.8%88.0%85.4%86.1%
2015–1987.6%90.0%87.6%87.7%
2020–2494.9%91.7%89.9%89.3%
Change+11.4 pts+5.1 pts+6.6 pts+4.3 pts
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High school completion is high in Castalian Springs: 94.9% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.

High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

Jobs in Castalian Springs

Unemployment, % of the labor force
PeriodCastalian SpringsNashville areaTennesseeU.S.
2006–107.1%7.2%8.6%8.1%
2010–144.5%7.8%9.6%9.4%
2015–194.5%3.9%5.4%5.6%
2020–240.6%3.6%4.8%5.4%
Change−6.5 pts−3.6 pts−3.8 pts−2.7 pts
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Unemployment in Castalian Springs has been low: just 0.6% of the labor force was out of work and looking, well below the national rate of 5.4%. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.

Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).

Castalian Springs compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Castalian Springs2.3445.34.9%11.1%8.2%1999$1,25922.4%94.9%0.6%
Chipman2.4545.18.1%7.1%4.2%2001$1,12322.2%91.2%1.5%
Kansas3.1243.35.9%11.2%11.5%1996$1,67327.3%96.1%4.1%
Bransford2.6136.810.4%14.7%4.3%1993$75039.3%90.9%1.1%
Hartsville2.7235.710.7%26.6%9.8%1987$83812.8%84.2%1.4%
Gallatin2.5039.112.1%38.1%6.0%1997$1,49533.3%91.7%3.0%
Taylorsville2.8241.510.8%8.1%3.7%1991$1,11925.5%89.7%0.8%
Laguardo2.7345.46.8%15.9%8.8%1997$1,77941.0%93.9%2.9%
Graball3.2238.96.1%14.2%9.9%1988$85020.8%90.8%1.5%
Lebanon2.6039.910.7%28.2%7.1%1996$1,35030.8%91.0%2.4%
Cairo Bend2.6942.79.1%10.8%6.0%2006$1,95146.8%96.6%0.5%

All figures 2020–24.

Cities with similar populations: Vancleave, MS · Winona, MS · Trenton, IL · Trenton, SC · Trevor, WI · Tryon, NC · Wheatland, WY · Wewahitchka, FL · Union Beach, NJ · West York, PA

About these numbers

Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Castalian Springs. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.

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