Service Area CATS serves the towns of Chester, Derry, and Hampstead. Town of Chester Town of Derry Town of Hampstead Chester Academy Derry Cooperative School District Hampstead Middle School Pinkerton Academy Chester Public Library Derry Public Library Hampstead Public Library Chester PD 603-887-3229 Derry PD 603-432-6111 Hampstead PD 410-239-8954
