Thank you to Jennifer Hanson at Primary Source for recommending many of these resources.
Immigration Explorer
See how foreign-born groups settled across the United States from 1880-2000. Compiled by Matthew Bloch and Robert Gebeloff of the New York Times.
Where U.S. Workers Come From
Foreign-born workers by occupation or country of origin:
Compiled by Matthew Bloch, Shan Carter, and Robert Gebeloff of the New York Times
Demographic changes in more than 17,000 school districts across the nation
By Robert Gebeloff, Tyson Evans and Andrei Scheinkman of the New York Times