I have lived in a community with a person at the gate and everybody could get in...
Some communities have gates but you can walk in because the walk entrance doesn't have a gate...
And ....I have a home in a nice community which is not gated and it has less crime compaired to the gated sub communities in the same community...
In our County we have a sheriff's website and you can see for every community/area what 911 calls have been placed and that is the best way to check on crime...hopefully you have it also...