Size of the town/city dont matter.
Windsor ENC, Sarnia ENC, Strathroy ENC, St.Thomas NOT enc, Chatham Kent Police Provoice NOT enc, Stratford... voice inver, Wingham NOT enc, Woodstock ENC, Hamilton NOT enc, Size of the town/city has nothign to do with why they want to be encrypted.
They dont want the public and news media people listning in and showing up to calls non stop.
Giving out peoples phone numbers, adresses and names. Prime listning for stalkers or people who are going to do a B&E or something. My guess is these police services think its mostly bad guys with scanners using it for aid in their crime and not just to listen in for something to do.
In toronto i herd 3 gun shot calls in 6 mins, I think they could use encryption so them bad guys cant hear K9 tracking them. Woodstock police, traffic stop on a old lady OH BOY such a reason for enc.. st.thomas/aylmer wide open vhf channel always chit chatting away with them about everything
Just up to the service if they want it or not. Kinda like with your cell phones. Its enc, would you rather everyone with a scanner to listen in to every phone convo you have?
Thats my 90 cents on the subject of encryption