The vicious Venezuelan prison gang Tren de Aragua has expanded its territory to at least 16 US states — an area that includes half of America’s population, The Post has learned.

Homeland Security officials last week were warned in an internal department intelligence memo about TdA’s growing presence across the country, most recently in Washington, DC, Virginia, Montana and Wyoming.

The gang already has footholds in California, Colorado, Florida, Georgia, Illinois, Louisiana, Nevada, New Jersey, New York, North Carolina, Tennessee, Texas and Wisconsin, according to the memo and previous reporting by The Post.