Since 2009, 21 US Cities Of The 100 Largest Became Majority Renters Versus Owners: Chart

From Bloomberg, "Renters Now Rule Half of U.S. Cities: The American Dream increasingly involves a lease, not a mortgage." by Patrick Clark:

Fifty-two of the 100 largest U.S. cities were majority-renter in 2015, according to U.S. Census Bureau data compiled for Bloomberg by real estate brokerage Redfin. Twenty-one of those cities have shifted to renter-domination since 2009. These include such hot housing markets as Denver and San Diego and lukewarm locales, such as Detroit and Baltimore, better known for vacant homes than residential development.

Source: Bloomberg