Upvote:5
I can only find figures excluding Indians. According to Weber's The Mexican Frontier, California had 7,300 in 1845, and New Mexico had 65,000 in 1846. Texas in 1846, according to the Texas State Historical Association, had 125,000 people.
Upvote:6
In an article on the Treaty of Guadalupe-Hidalgo, PBS offers the following estimate:
At the time of the treaty, approximately 80,000 Mexicans lived in the ceded territory, which comprised only about 4 percent of Mexicoβs population. PBS