The geographical areas of crews varies. A captain can have a small, tight knit crew who are all headquarted in the same neighborhood but if it´s a large crew, the soldiers can be scattered throughout different neighborhoods.
For example, Toddo Aurello´s crew consisted of guys from Brooklyn and from the state of New Jersey.
Further on, Lilo Galante´s crew consisted of guys in New York, New Jersey and Canada! So it varies a lot.
It´s not unusual that crewmembers, for various reasons, change crews and end up under a different captain during the course of time. Mostly because when a captain passes away, the soldiers who was under him are asked by the consigliere if they want to be under the newly appointed captain. Of course, most of them says yes but the asking is a procedure of conduct on the consigliere´s behalf. All according to the rules.

When it comes to kicking up money, I think there is no standard rate. It´s an arrangement between the captain and the soldier, an arrangement that is worked out in a way that suits them both. A soldier can be a very good earner, so he will kick up more money than a soldier who is not that active. Maybe the less active one has less business interests or he´s getting on in years. There are lot of soldiers that are 70, 80 and even 90 years old today.