Public zone: 3.6 m or 12 feet and over – seminars, presentations, etc.
Close intimate zone
The close intimate zone is reserved for very special people, your close family and friends, children and pets. If anyone else tries to get that close to you, you pull back and away from them physically, maybe even turn your face or, in extreme cases, turn your back on them.
Intimate zone
The intimate zone is just a little further from the body but is still very close. Again there are only certain people you are going to let that close and still feel comfortable with. Mainly friends, children and animals again.
Personal zone
The personal zone is that comfortable distance you stand from someone when you're chatting in social scenarios but it's also the acceptable distance for workplace interactions. Any closer and you could be seen as overbearing.
Social zone
The social zone is not exactly what it would appear. Social in this context means people you deal with that you don't really know, where you want to keep just a little bit of extra distance between you: a plumber visiting your home to fix a burst pipe, for example. Shop counters keep customer and server about this distance apart.
Public zone