As I see it you can either free range your chickens or raise free range raccoons, the choice is your's. I deal with any raccoons on my place with extreme prejudice. I recommend a Duke Trap Company DP or dog proof trap. Just be sure to set it in a location where the trapped coon can't tangle...
If you or your neighbors do dumb things like feed coons, leave dog or cat food out, or put food scraps in a compost pile, then you can expect to enjoy a raccoon population as healthy as the one in the following video...