Castle Hills, TX Demographics

A map of Castle Hills's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Hispanic	2,178	1,884	55.2%	47.4%
White	1,467	1,829	37.2%	46.0%
Asian	139	73	3.5%	1.8%
Multiracial	83	105	2.1%	2.6%
Black	46	60	1.2%	1.5%
Native American/Other	30	27	0.8%	0.7%

Castle Hills, Texas has an estimated population of 3,943, a less than 1% change from the 3,978 recorded in the 2020 Census. The population is 55.2% Hispanic, 37.2% White, 3.5% Asian, 2.1% Multiracial, 1.2% Black, and 0.8% Native American/Other. This demographic dot map shows the population of Castle Hills, with one dot drawn for each person counted by the Census, color-coded by race.

Castle Hills has become slightly less racially diverse since the 2020 Census. It is considerably less diverse than Texas overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Castle Hills, that probability was 56.3% in 2020 and 55.5% in the most recent ACS estimates.

Castle Hills is ranked the 498th most populous place in Texas, out of 1,863 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Castle Hills was ranked the 477th most populous place in the 2020 Census.

Castle Hills's White Population

1,467 residents of Castle Hills, or 37.2% of the population, identify as White. The share of White residents in Castle Hills is comparable to the share in Texas overall, where 39.1% of the population is White. Castle Hills ranks 1102nd statewide in terms of White residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Castle Hills's White population has declined by an estimated 19.8%. White residents' share of Castle Hills's population has decreased from 46.0% to 37.2%.

Castle Hills is more White than neighboring Balcones Heights (16.2% White), and San Antonio (23% White). Castle Hills is less White than neighboring Olmos Park (86% White), Alamo Heights (73.5% White), and Hill Country Village (66.3% White).

Castle Hills's Black Population

46 residents of Castle Hills, or 1.2% of the population, identify as Black. The share of Black residents in Castle Hills is considerably lower than in Texas overall, where 11.9% of the population is Black. Castle Hills ranks 872nd statewide in terms of Black residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Castle Hills's Black population has declined by an estimated 23.3%. Black residents' share of Castle Hills's population has remained roughly unchanged at 1.2%.

Castle Hills is more Black than neighboring Olmos Park (0.9% Black). Castle Hills is less Black than neighboring Balcones Heights (13.6% Black), San Antonio (6.4% Black), Alamo Heights (1.3% Black), and Hill Country Village (16.7% Black).

Castle Hills's Asian Population

139 residents of Castle Hills, or 3.5% of the population, identify as Asian. The share of Asian residents in Castle Hills is comparable to the share in Texas overall, where 5.5% of the population is Asian. Castle Hills ranks 268th statewide in terms of Asian residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Castle Hills's Asian population has grown by an estimated 90.4%. Asian residents' share of Castle Hills's population has increased from 1.8% to 3.5%.

Castle Hills is more Asian than neighboring Balcones Heights (0% Asian), Olmos Park (1.2% Asian), San Antonio (2.9% Asian), Alamo Heights (1.3% Asian), and Hill Country Village (1% Asian).

Castle Hills's Hispanic Population

2,178 residents of Castle Hills, or 55.2% of the population, identify as Hispanic. The share of Hispanic residents in Castle Hills is significantly higher than in Texas overall, where 39.7% of the population is Hispanic. Castle Hills ranks 643rd statewide in terms of Hispanic residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Castle Hills's Hispanic population has grown by an estimated 15.6%. Hispanic residents' share of Castle Hills's population has increased from 47.4% to 55.2%.

Castle Hills is more Hispanic than neighboring Olmos Park (9.5% Hispanic), Alamo Heights (20.7% Hispanic), and Hill Country Village (13.3% Hispanic). Castle Hills is less Hispanic than neighboring Balcones Heights (68.4% Hispanic), and San Antonio (64.6% Hispanic).

Castle Hills's Native American/Other Population

30 residents of Castle Hills, or 0.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Castle Hills is comparable to the share in Texas overall, where 0.6% of the population is Native American/Other. Castle Hills ranks 849th statewide in terms of Native American/Other residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Castle Hills's Native American/Other population has grown by an estimated 11.1%. Native American/Other residents' share of Castle Hills's population has remained roughly unchanged at 0.8%.

Castle Hills is more Native American/Other than neighboring Balcones Heights (0.7% Native American/Other), Olmos Park (0% Native American/Other), San Antonio (0.7% Native American/Other), and Hill Country Village (0.2% Native American/Other).

Castle Hills's Multiracial Population

83 residents of Castle Hills, or 2.1% of the population, identify as Multiracial. The share of Multiracial residents in Castle Hills is comparable to the share in Texas overall, where 3.1% of the population is Multiracial. Castle Hills ranks 1049th statewide in terms of Multiracial residents as a share of the population, out of 1,863 places.

Since the 2020 Census, Castle Hills's Multiracial population has declined by an estimated 21.0%. Multiracial residents' share of Castle Hills's population has decreased from 2.6% to 2.1%.

Castle Hills is more Multiracial than neighboring Balcones Heights (1.3% Multiracial). Castle Hills is less Multiracial than neighboring Olmos Park (2.5% Multiracial), San Antonio (2.4% Multiracial), Alamo Heights (2.3% Multiracial), and Hill Country Village (2.6% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.