Fairfield Demographics Data
(Connecticut Economic Resource Center, Inc.) is a non-profit economic development organization that publishes profiles of Connecticut towns, including www.fairfieldct.org.
CERC’s Business Response Center can answer your questions if you need more specific information.
Other resources include the state Dept. of Economic and Community Development and the US Census web site - in addition to general statistics for Fairfield County as a whole, the Census Bureau has a well-hidden report on Fairfield (PDF) as well.