Using figures for Monmouth County and Brookdale Community College (BCC) in New Jersey, this report presents a methodological model for using census tract data to determine the impact of a college or university on the communities it serves. Introductory material lists the types of demographic information available for each census tract and states the objectives of the BCC demographic study. The next section explains the procedures whereby census tract numbers were determined for all BCC students and comparisons between BCC and census tract demographics were made. Information on contract costs and software is provided. Finally, findings are presented, indicating that: (1) the mean participation rate for the tracts was 14.8%, with a range of 0.0 to 31.4%; (2) BCC's overall impact rate into the group of tracts with the smallest number of persons aged 15 and over was 13.4%, compared to an impact rate of 11.1% into tracts with extremely large numbers of persons aged 15 and over; (3) the tracts with the highest proportions of adults were older, geographically smaller, and more established communities along the eastern seashore of the county; (4) women comprised 59.4% of the entering students from tracts with the smallest proportions of adults and 57.5% of the entering students from tracts with the largest proportion of adults; and (5) while 10.9% of Monmouth County's population is made up of Blacks, Puerto Ricans, and other Hispanics, only 6.9% of BCC students identified themselves as belonging to these groups. Recommendations for educators interested in implementing this research model are provided throughout the report. (EJV)