How many Mexicans lived in the territories that the United States won in the Mexican War?

In 1848, about 80,000 Mexicans lived in what was now the American West and Southwest.

Of that number, about 60,000 lived in New Mexico, 13,000 in California, and 7,000 in Texas.

Most were farmers and ranchers, with a sharp separation between the rich, educated property owners and the peons, or poor laborers, who worked for them.