Penobscot County (ME)
From The RadioReference Wiki
Police
Police Department Unit ID's
Most local police departments simply identify themselves as their town plus a unit number, for example Dexter 5, Newport 4, Hermon 2, etc.
100s Penobscot County Sheriff Deputies
200s Lincolcn PD
200s Brewer PD
400s Old Town PD
400s East Mill. PD
500s Maine SP Troop E units
600s Orono PD
700s Bangor PD
800s Veazie PD
900s Medway PD
4400 Millinocket PD