Charges that geographical redlining is widely practiced by mortgage lenders and is associated with racial discrimination have received much attention. However, empirical research in this area has yet to document a convincing answer to the question of whether redlining even exists. Much of the previous research in this area has suffered from failure to account for variations in risk, and/or failure to adequately control for geographical differences in demand. This study addresses these problems in an effort to determine whether the disparity in the flow of mortgage credit can be explained by differences in risk and demand. THE U.S. MORTGAGE MARKET is operationally efficient with long-term mortgage loans made to highly leveraged borrowers at very thin spreads above the lender's cost of funds. There has long been controversy, however, with respect to considerations of equity. Legislation on this issue began with the Fair Housing Act of 1968, followed by the Equal Credit Opportunity Act of 1974, and the Home Mortgage Disclosure Act of 1975 (HMDA). It is now over 15 years since passage of the Community Reinvestment Act of 1977 (CRA). This legislation was designed to assure that banks meet the credit needs of neighborhoods in their service areas. In recent years much attention in the administration of the CRA has been devoted to the issue of racial discrimination in mortgage lending. Questions still remain as to whether the decisions of mortgage lenders are influenced by the race of the loan applicant or on the racial composition of his neighborhood.Redlining is the refusal of lenders to make mortgage loans in certain areas regardless of the creditworthiness of the individual loan applicant. Many studies claim to verify the existence of racially based mortgage redlining. The earliest studies were generally carried out by community groups and were rather crudely done. For a summary of such studies, see Benston (1981). Several studies appear in professional literature (for example, see Bradbury, Case, and Dunham (1989) and Hutchinson, Ostas, and Reed (1977)). From a public policy standpoint, these findings, if valid, would indicate a need for additional regulation to ensure social equality. Additionally, the existence of redlining in the absence of structural defects in the market would conflict * Sam Houston State University and the College of Business Administration, University of Houston, respectively. We thank Clifford Fry, William Kretlow, Archer McWhorter, Bernell Stone, Michael Pinegar, Grant McQueen, and particularly, George Benston and Rene Stulz for helpful comments. 81 82The Journal of Finance with the economic man assumption upon which much of economic analysis is based. That is, mortgage lenders are rational agents functioning in a competitive market. Rational agents would not reject profitable projects based on noneconomic criteria such as race.Indirect evidence in support of the economic man assumption can be found in the literature on the performance of minority-owned banks. If redlining is racially induc...