Ill. Admin. Code tit. 38, § 185.410
c) Optional data collection and maintenance.
1) Consumer Loans. A credit union may collect and maintain in machine readable form (as prescribed by the Secretary) data for consumer loans originated or purchased by the credit union for consideration under the lending test. A credit union may maintain data for one or more of the following categories of consumer loans: motor vehicle, credit card, other secured, and other unsecured. If the credit union maintains data for loans in a certain category, it shall maintain data for all loans originated or purchased within that category. The credit union shall maintain data separately for each category, including for each loan:
C) The loan location; and