Approximately 305,000 people aged 65 and older live across Travis, Williamson, and Hays counties, based on Census population estimates combined with survey age percentages. That's roughly 161,000 in Travis, 103,000 in Williamson, and 41,000 in Hays. Hays and Williamson are growing fastest.
How Austin families actually use this
Approximately 305,000 people aged 65 and over across Travis, Williamson and Hays counties — roughly 161,000 in Travis, 103,000 in Williamson and 41,000 in Hays.
Treat these as approximations rather than published counts. They are calculated by applying American Community Survey age percentages to 2025 Census population estimates, which mixes two data vintages. For a citable hard figure, pull ACS Table S0101 directly.
The growth pattern matters more than the level. Hays grew 26.3 percent and Williamson 23.6 percent since 2020, against 7.7 percent in Travis, so the senior population is shifting outward from the core faster than most local planning assumes.
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