Castle Hills, Bexar County, TX demographics:
population, income, and more

Total population
3,943
-0.5% year-over-year change
Median household income
$95,391/yr
-0.2% year-over-year change
Housing units
1,744
-2.5% year-over-year change

Castle Hills population

How many people live in Castle Hills

Castle Hills is home to 3,943 residents, according to the most recent Census data. Gender-wise, 54.2% of Castle Hills locals are male, and 45.8% are female.

Total population
3,943
-0.5% year-over-year change
Gender ratio
Male
54.2%
2,138
Female
45.8%
1,805
Value Percent YoY change
Male 2,138 54.2% 0.5%
Female 1,805 45.8% -1.6%
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 Castle Hills is 41, with the population distributed as follows: about 20% are children under 15, then 9.7% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.8% of the population, while another 27.6% fall into the 45 to 64 bracket. Finally, around 18.9% are 65 or older.

Median age
41.4
Age breakdown
Under 15
20%
15 to 24
9.7%
25 to 44
23.8%
45 to 64
27.6%
Over 65
18.9%
Value Percent YoY change
Under 15 789 20% 16.5%
15 to 24 381 9.7% -28.8%
25 to 44 939 23.8% 9.2%
45 to 64 1,089 27.6% -6.1%
Over 65 745 18.9% 2.2%
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 Castle Hills, 84.1% of the population are US-born citizens, while 8.2% have gained naturalized citizenship. At the same time, 7.6% of residents are non-citizens. As for race, 47.8% of locals are Caucasian, 1.2% are African American and 3.8% have Asian roots. There’s also a share of 39.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
84.1%
Non-U.S.-born citizens
8.2%
Non-citizens
7.6%
Value Percent YoY change
U.S.-born citizens 3,317 84.1% -2.6%
Non-U.S.-born citizens 325 8.2% 9.4%
Non-citizens 301 7.6% 15.8%
Racial breakdown
White
47.8%
Black or African American
1.2%
American Indian and Alaska Native
0.2%
Asian
3.8%
Native Hawaiian and other Pacific Islander
0%
Two or more races
39.4%
Other
7.7%
Value Percent
White 1,886 47.8%
Black or African American 46 1.2%
American Indian and Alaska Native 6 0.2%
Asian 149 3.8%
Two or more races 1,552 39.4%
Other 304 7.7%

Households in Castle Hills

A peek inside Castle Hills households

Castle Hills has 1,491 households, with an average of 3 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
1,491
2.3% year-over-year change
Average people per household
3
Non-family households
580
Family households
911
Value Percent YoY change
Non-family households 580 38.9% 13.1%
Family households 911 61.1% -3.5%
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 Castle Hills

The housing landscape of Castle Hills

Castle Hills's housing consists of 1,744 units, with 81.8% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.6% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.5% of the housing landscape.

Housing units
1,744
-2.5% year-over-year change
Housing types
Value Percent
1 unit, detached 1,426 81.8%
1 unit, attached 11 0.6%
2 units 16 0.9%
5 to 9 units 18 1%
10 to 19 units 58 3.3%
20 to 49 units 25 1.4%
50 or more units 182 10.4%
Mobile home 8 0.5%
Homes built since 2020
0
% year-over-year change

The age of buildings in Castle Hills

In Castle Hills, the median construction year is 1965. About 2.8% of homes were built before the 1940s, with another 2.8% 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 49 2.8% 25.6%
Built between 1940 and 1949 48 2.8% 37.1%
Built between 1950 and 1959 380 21.8% 0.5%
Built between 1960 and 1969 861 49.4% -7.3%
Built between 1970 and 1979 137 7.9% 4.6%
Built between 1980 and 1989 82 4.7% 2.5%
Built between 1990 and 1999 43 2.5% -28.3%
Built between 2000 and 2009 106 6.1% 11.6%
Built between 2010 and 2019 38 2.2% -7.3%
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.

Castle Hills occupancy rates

Out of the 1,491 occupied housing units in Castle Hills, 78.9% are owner-occupied, while 21.1% are lived in by tenants. Meanwhile, 14.5% of all homes on the local market sit vacant.

Occupied housing units
1,491
2.3% year-over-year change
Occupancy breakdown
Renter occupied
314
Owner occupied
1,177
Value Percent YoY
change
Renter occupied 314 21.1% 6.8%
Owner occupied 1,177 78.9% 1.2%
Unoccupied housing units
14.5%
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.

Castle Hills housing costs

Housing costs in Castle Hills come to a median of $1,799 per month, while tenants specifically pay a median gross rent of $1,650.

Median housing costs per month
$1,799/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.
Median gross rent in Castle Hills
$1,650/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Castle Hills

Castle Hills education at a glance

About 22.6% of the population in Castle Hills went to high school, while 17.9% pursued college studies. Another 8.8% earned an associate degree and 28% hold a bachelor’s. Meanwhile, 17.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 155 5.1% 15.7%
High school diploma 681 22.6% -5.0%
College diploma 539 17.9% -9.7%
Associate degree 265 8.8% 21.0%
Bachelor's degree 845 28% 2.9%
Graduate degree 531 17.6% -8.1%
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 Castle Hills

How much people earn in Castle Hills

The average annual household income in Castle Hills was $143,002 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -0.8% change from the previous year. At the same time, the median income stood at $95,391, reflecting a -0.2% shift over the same period.

Average household income in Castle Hills
$143,002/year
-0.8% year-over-year change
Median household income in Castle Hills
$95,391/year
-0.2% year-over-year change

Castle Hills income by age

In Castle Hills, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $80,000. Those with someone between 45 and 64 in charge, often well established professionally, earn $142,656 overall. Overall, 93% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $80,000 11.4%
45 - 64 $142,656 -5.9%
Over 65 $64,750 3.9%
Above poverty level
3,628
Below poverty level
271
Value Percent YoY
change
Above poverty level 3,628 93% -1.3%
Below poverty level 271 7% 12.9%

Employment in Castle Hills

Workforce and job types in Castle Hills

The job market in Castle Hills is powered by 1,703 working residents, spread across a range of industries and roles. 85.6% of the working population are employed in professional or administrative positions, while 14.4% are in hands-on or service-based jobs. Also, 23.8% run their own businesses, 61.4% are employed by private companies, and 10.1% work in the public sector.

Workforce demographics

Working population
1,703
-3.8% year-over-year change
White collar
1,457
Blue collar
246
Value Percent YoY change
White collar 1,457 85.6% -6.8%
Blue collar 246 14.4% 18.8%
Employer type
Self employees
23.8%
Private companies
61.4%
Governmental workers
10.1%
Not for profit companies
4.6%
Value Percent YoY change
Self employees 406 23.8% -6.5%
Private companies 1,046 61.4% -4.2%
Governmental workers 172 10.1% 31.3%
Not for profit companies 79 4.6% -30.7%
Unemployment rate
2.4%
27.3% year-over-year change

Available workforce

The unemployment rate in Castle Hills stands at 2.4%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Castle Hills

How people get around in Castle Hills

Commuting methods vary: 83.5% of residents travel by personal vehicle and 1.1% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 1,435 83.5% -3.2%
Bus or trolleybus 14 0.8% -62.2%
Walk 19 1.1% -29.6%
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 Castle Hills by zipcode?

Zipcode Population Number of households Median income Average income
78213 40,526 16,239 $55,884 $74,210

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FAQs about Castle Hills demographics 

What is the total population of Castle Hills?

Castle Hills has a total population of 3,943 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 -0.5% compared to a year ago.

What is the gender ratio in Castle Hills?

The gender ratio in Castle Hills is as follows:
  • 54.2% males (2,138 residents)
  • 45.8% females (1,805 residents)

What is the median age in Castle Hills?

The median age in Castle Hills is 41.4.

What is the age distribution of the population in Castle Hills?

The age distribution in Castle Hills is as follows:
  • Under 15: 20% (789 residents)
  • Ages 15-24: 9.7% (381 residents)
  • Ages 25-44: 23.8% (939 residents)
  • Ages 45-64: 27.6% (1,089 residents)
  • Over 65: 18.9% (745 residents)

What is the racial and ethnic makeup of Castle Hills?

The racial and ethnic makeup of Castle Hills is as follows:
  • White: 47.8% (1,886 residents)
  • Black or African American: 1.2% (46 residents)
  • American Indian and Alaska Native: 0.2% (6 residents)
  • Asian: 3.8% (149 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 39.4% (1,552 residents)
  • Other: 7.7% (304 residents)

What percentage of the population in Castle Hills are U.S.-born citizens?

U.S.-born citizens represent 84.1% of the population in Castle Hills.

How many housing units are there in Castle Hills?

There are 1,744 housing units in Castle Hills, reflecting a -2.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Castle Hills and what is the average household size?

Castle Hills has a total of 1,491 households, with an average of 3 people in each.

What is the median household income in Castle Hills?

Castle Hills has a median household income of $95,391, representing a -0.2% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Castle Hills?

The employment rate is 97.6% in Castle Hills, with a workforce of 1,703 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 85.6% (1,457 residents)
  • Blue-collar workers: 14.4% (246 residents)

Places of employment:
  • Self-employed: 23.8% (406 residents)
  • Private companies: 61.4% (1,046 residents)
  • Governmental workers: 10.1% (172 residents)
  • Not-for-profit companies: 4.6% (79 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