In a straightforward map, Seth Kadish shows the percentage of county residents who commute out of state, according to estimates from the American Community Survey.
Not surprisingly, the counties with the highest percentages are adjacent to state borders. Nine counties have greater than 50% commuting to a different state. In most cases, the flow is unidirectional. For example, people leave Phenix City, AL, to work in Columbus, GA, or they drive from Vancouver, WA, to Portland, OR. This may be for tax purposes, or simply because they prefer the lifestyle or affordability of a certain suburb.
Note that counties are colored by state of residence, so darker colors means more people flowing out of those areas in the morning.
