In terms of just starting towns, pretty much no town will begin KOS to you EXCEPT Grobb, for the races that don't start there.
Now, if you happen to be a necromancer Paladin and Cleric NPCs will not care for you, and if town guardsmen see you fighting their citizens (paladin and cleric npcs) they will join in. So, be very careful if you are evil (or a good character in an evil area, it works the same way) and if you don't want to be KOS in towns make sure you don't kill townspeople there.