Boerne’s median age sits at 38.7 years, according to Census Bureau estimates — below Kendall County’s 43.2 and above Texas’s 35.6. Of the three figures, Boerne’s lands closest to the middle of that range.
The number has moved little over the past decade. The city’s median age was 38.5 in the 2010–2014 period, 38.6 in 2015–2019, and 38.7 in the most recent 2020–2024 estimates. The change from the earliest period to the most recent is 0.2 years, and the change from the middle period to the most recent is 0.1 years; both shifts fall within their respective margins of error and are best read as flat.
Kendall County’s figure of 43.2 is the highest of the three; Texas as a whole, at 35.6, is the youngest.
For residents, the numbers suggest that Boerne’s age profile — neither as young as the state nor as old as the broader county — has remained largely stable across a period when the surrounding area has seen substantial development activity.
These are 2020–2024 ACS 5-year estimates. Each figure carries a margin of error; the ladder above marks each ±MOE. Change figures compare non-overlapping five-year periods; the margin of error of a change combines both periods’ margins.