Each month a new map is presented to the Commission to help explain important trends in the Bay Area, across the nation and around the world. These custom-crafted maps are prepared by MTC’s Data & Visualization team.
U.S. Immigration, 1820-Present
From 1920 to 2013, 79 million people obtained lawful permanent resident status in the United States. This month’s Map of the Month visualizes all of them based on their prior country of residence. The brightness of a country corresponds to its total migration to the U.S. at the given time. 1 dot = 10,000 people.