 The Pensacola Standard Metropolitan Statistical Area was first defined after the 1960 United States Census, with Pensacola as the principal city, and included Escambia and Santa Rosa counties.Ferry Pass and Brent, which are unincorporated census-designated places in Escambia County, were added as principal cities after the 2000 Census.The population of the MSA in the 2010 census was 448,991.