If you spend a lot of time in the same four block radius, you could say those streets make up your confines. Confines means an area with a clear boundary.
Think of confines as a confined or restricted space. The fact that there is a boundary is the important part of this word. You might say that things said in the confines of your office should not be shared, or suggest that your parents get out of the confines of their residential development a little more often. It is always used in the plural in this sense.