I am looking to discover what factor(s) is causing the high density of believers of a certain religion in several suburbs. In other suburbs, the densities do not reach that high level. So I am curious to find out what's driving these believers to pick those few suburbs -- is it ethnic background? Or is it income? Or is it age?

I am trying to use linear regression, but

*I don't have access to data at individual level, only at*

**-- they are all just summary statistics, for example 56% = Irish, 30% = Italian... average income = $800... median age = 40, etc, etc.**

*suburb level*Could anybody advise me on:

- is it alright to proceed with this type of regression?
- how could I improve my analysis?

Thank you in advance.

Jack