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Original post by George Dvorsky on io9

These maps show U.S. migration patterns for the past six decades

These maps show U.S. migration patterns for the past six decades

Millions of Americans move to different counties each year. Tracking who is moving and where they're going can be difficult to quantify and visualize, but these gloriously detailed interactive maps from the University of Wisconsin manage the task with ease.

Top map: Total Net Migration Rate during the 2000s. Legend for all maps:

These maps show U.S. migration patterns for the past six decades

Quite incredibly, about 10 million Americans move to a different county every year. These migration rates vary significantly by age, race, and ethnicity — not to mention the social and economic factors that motivate people to pack their bags and go. At the same time, some counties' patterns tend to be consistent over time, which often tells a different story altogether.

The new website, Net Migration Patterns for US Counties, has compiled zoomable maps of net migrations broken down by age, race, Hispanic-origin, and sex for all U.S. counties each decade from 1950 to 2010.

From the website:

Charts make it easy to compare migration patterns over time within a single county or to compare patterns in two or three different counties for the same decade. Maps show how counties across the country compare to one another.

Here are some screengrabs showcasing some of the more interesting and revealing maps. As the legend notes, deeper orange represents more people who moved away than moved into a county, and deeper purple shows the opposite.

Total Net Migration Rate during the 1950s:

These maps show U.S. migration patterns for the past six decades

People across all demographics are moving from the inner areas to the coast.

Total Net Migration Rate during the 1960s:

These maps show U.S. migration patterns for the past six decades

Total Net Migration Rate during the 1970s:

These maps show U.S. migration patterns for the past six decades

Total Net Migration Rate during the 1980s:

These maps show U.S. migration patterns for the past six decades

Total Net Migration Rate during the 1990s:

These maps show U.S. migration patterns for the past six decades

Total Net Migration Rate during the 2000s, Age 30-54:

These maps show U.S. migration patterns for the past six decades

Total Net Migration Rate during the 1990s, Hispanics:

These maps show U.S. migration patterns for the past six decades

Total Net Migration Rate during the 1950s, Non-White:

These maps show U.S. migration patterns for the past six decades

Total Net Migration Rate during the 2000s, Whites:

These maps show U.S. migration patterns for the past six decades

Total Net Migration Rate during the 1980s in California:

These maps show U.S. migration patterns for the past six decades

And awesomely, all the data is downloadable.

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