How large are county-level swings in domestic migration across America?
Core argument: A county-level map of cumulative net domestic migration from 2020 to 2024 marks in darkest green counties whose net in-migration equals 10% or more of their 2020 population, and in darkest purple those with net out-migration of 10%.
Patterns of domestic migration—where people who already live in America choose to move—reveals a lot about where people do or don’t want to live. Or, framed differently, where they can and can’t afford to. This map shows the cumulative domestic migration of each US county, from 2020 to 2024. The darkest green color shows places where the (net) number of people who’ve moved in since 2020 is equal to 10% or more of the population in 2020. The darkest purple color shows the reverse. In those counties the net number of people who’ve moved out is equal to 10% of the 2020 population. This only includes people who moved from one place in the United States to another, not people who moved into or out of the country. I was surprised by the extent to which certain ecological regions correspond to the patterns on this map.

