Hi JK,
There is no real way to calculate salaries for community managers as there are just too many variables; experience, the market, community size, challenges facing the community, budget, etc. I know managers who have large communities and make less than 30k, and I know managers of smaller communities who make over 60k. The one constant I've noticed is that those managers who are active in their local apt. association and have a great reputation within the industry can ask and usually get higher salaries. I was told by a mentor to take the salary from your last position and ask for 10% more, but be willing to negotiate. Sometimes it's worth it to take a little less money to get your foot in the door of a great company!