Visualizing Internal Migration

Two newspapers, the Charlotte Observer and the Fort Worth Star-Telegram, have put together an on-line map to present a graphic look at IRS migration data.

IRS migration data are often used in population estimates and projections programs.

The map allows users to select a county and see graphically, and in tabular form, where in-migrants came from and where out-migrants went to. The map data is limited to county-to-county migration within the US. The tabular presentation also lists international migration (and non-movers) and presents median household income for each group.

The graphic shown here is a national-level view of where in-migrants into Maricopa County, Arizona, originated. Maricopa County was recently listed by the Census Bureau as having the largest numerical population increase since the 2000 Census.