How many people came over the Oregon Trail?
It’s difficult to estimate the numbers due to the nature of the large scale emigration. People on the move, in sometimes large groups, with varying destinations are difficult to count. The emigration lasted over several decades. People were born and people died during the typical five month journey. Some historians have made estimates based on diary accounts, newspapers reports from the time, and from registers and wagon counts kept at Fort Laramie and Fort Kearney. Historian John Unruh estimated 296,000 traveled to Oregon, California, and Utah from 1840 to 1860. Merrill Mattes estimated 350,000 overland travelers from 1841 through 1866, and later expanded his estimate closer to 500,000 for all travelers on western trails during that time period.