 Puerto Ricans are the largest Latino group in the city and that, outside Puerto Rico, Philadelphia now has the second largest Puerto Rican population, estimated at over 130,000.Since 2010, Philadelphia replaced the city of Chicago as the city with the second-largest Puerto Rican population, Chicago's slightly shrunk and Philadelphia's continued to grow, more than ever before, not only having the second largest Puerto Rican population, but also one of the fastest-growing.Most sources, including the most reliable, the United States Census Bureau, estimated that as of 2010, Puerto Ricans made up between 70-80 percent of Philadelphia's Hispanic/Latino population.