Rutgers University is home to chapters of many Greek organizations, and a significant percentage of the undergraduate student body is active in Greek life. Several fraternities and sororities maintain houses for their chapters in the area of Union Street (known familiarly as "Frat Row") in New Brunswick, within blocks of Rutgers' College Avenue Campus. Chapters of Zeta Psi and Delta Phi organized at Rutgers as early as 1845. The Alpha Rho chapter of Chi Psi fraternity, founded at Rutgers College in 1879, was the first fraternity at Rutgers to own a fraternity house, or "Lodge," purchased in 1887. The fraternity today still owns and occupies the same property at 114 College Avenue. Today, there are over 50 fraternities and sororities on the New Brunswick-Piscataway campus, ranging from traditional to historically African-American, Hispanic, Multicultural, and Asian interest organizations. The New Brunswick campus of Rutgers University has a chapter of the only active co-ed pre-medical fraternity, Phi Delta Epsilon, . Greek organizations are governed by the "Office of Fraternity and Sorority Affairs". Twelve organizations maintain chapters in New Brunswick without sanction by the university's administration. Students involved in Greek Life must meet academic eligibility requirements including maintaining a cumulative 2.5 GPA, completion of 12 credits, and be a currently enrolled full-time student. Some individual organizations hold a higher GPA requirement.