Lesser Known Facts About Native AmericansBy Tammy Salt / March 23, 2019 14. Big Population IMAGE BY: msn.com Records from multiple historians show that there were an estimate of 18 to 20 million people living in the land known as America today back when the Europeans first set foot on the land. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20