Just as family members and neighbors traced each others’ routes from Europe to the New World, Americans followed migration patterns within the United States—patterns that can be displayed on maps like this one of Ohio migration patterns.
The map above, based on 1880 census data, classifies states by their proportion of residents who were born in Ohio. The darker the shading, the higher the state’s percentage of native Ohioans.
But the shading of states out West reveals a key migration trend. Several states from Missouri to California were home to between 10 and 50 Ohioans per every 1,000 residents, outranking states in the Southeast and Northeast.