A Round Rock patient rarely types the word Austin
The suburbs around the city are their own search markets, and their residents search with their own town name.
Ask a patient in Cedar Park where they live and you will not hear Austin. You will hear Cedar Park. Their searches match their mailing address, and so do the searches in Georgetown, Leander, Pflugerville, Kyle and Buda.
A page built for dentist in Austin puts you in a fight with every directory, every group practice and every listing aggregator in Travis County. A page built for one suburb puts you in a fight with the handful of practices actually in it.
Start from your own records rather than a keyword tool. Pull the ZIP codes of the patients who came in last year and sort them by count. The towns at the top are the pages worth writing, in that order.
Write a town page only when you have something true to put in it. Which providers see families from there. Which hours suit that drive. Where the office sits relative to the highway they already use. A page that names a place and says nothing else has been published a thousand times already.