Consider the following: 50 Largest Metropolitan Areas in the United States New York Los Angeles Chicago Philadelphia Dallas Miami Washington Houston Detroit Boston Atlanta San Francisco-Oakland Riverside-San Bernardino, California (Inland Empire) Phoenix Seattle Minneapolis-St. Paul San Diego St. Louis Baltimore Pittsburgh Tampa-St. Petersburg Cleveland Denver Cincinnati Portland, Oregon Kansas City Sacramento San Jose San Antonio Orlando Columbus, Ohio Providence, RI Norfolk-Virginia Beach Indianapolis Milwaukee Las Vegas Charlotte New Orleans (Pre-Katrina) Nashville Austin, Texas Memphis Buffalo Louisville, Kentucky Hartford Jacksonville Richmond, Virginia Oklahoma City Birmingham, Alabama Rochester, NY Excluding Riverside-San Bernardino (which is really just an offshoot of LA), the largest metropolitan area in the United States without an MLB team is that of Portland, Oregon. Las Vegas is the fastest-growing metropolitan area.