When a town page is worth writing
A page named after a city only helps if you serve that city and the page says something a swapped template would not.
Write it if you will drive there
A town page is a promise. It says you take appointments from that place, you know the drive, and you want those customers. If you would rather not cross the county for that work, do not publish the page.
Start with the towns that already send you business, plus the ones you are ready to add. A handful of true pages is a local strategy. Fifty identical pages is a footprint nobody should trust.
The page has to be about both things
Name the service and the place in the headline. Say what is different about coming from there: the office they will visit, the parking, the hours, the part of town you cover.
Add proof you could not paste into the next city. A review from that area, a case you can describe without private details, the map and the next open time. If none of that changes from town to town, you do not have a town page yet. Service-area pages that rank walks through the structure section by section.
Point it at a booking
The search was local because the person wants someone nearby, soon. End the page with a call, a form, or a time they can take. Link the town back to the service page, and the service back to the towns you actually cover.
Review the list twice a year. Drop towns you stopped serving. Add a page when a new area starts to call. The map should match the schedule, and the CRM should tell you which towns actually booked. The first half of this argument is in write the page they are already searching for.