City in Bexar County, Texas · 2.5 sq mi · 1,596 people per sq mi
3,941 people live in Castle Hills. The typical household earns $95,391, and the median resident is 41.4 years old.
2026 projection
From 3,978 in 2020
Poverty rate 6.93%
Men 40.6 · Women 43.6
1960–2026
3,941
2026 projection
0.9% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1960–2026
3,941
2026 projection
0.9% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 3,941 | -7 | 0.18% |
|---|---|---|---|
| 2025 | 3,948 | -5 | 0.13% |
| 2024 | 3,953 | +15 | 0.38% |
| 2023 | 3,938 | -6 | 0.15% |
| 2022 | 3,944 | -10 | 0.25% |
| 2021 | 3,954 | -24 | 0.60% |
| 2020 | 3,978 | -49 | 1.22% |
| 2019 | 4,027 | -44 | 1.08% |
| 2018 | 4,071 | -39 | 0.95% |
| 2017 | 4,110 | -34 | 0.82% |
Showing 10 of 22 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Castle Hills has a population change lower than Bexar County, Texas, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 39 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 14 residents
49% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 49% | 47% | 51% |
| Never married | 32% | 38% | 25% |
| Divorced | 11% | 12% | 10% |
| Widowed | 8% | 3% | 14% |
| Separated | <1% | <1% | 1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources