The percentage of married people appears to be lower in the south and high in the midwest. Compare this to the percentage of people who are divorced, and they are almost inverted versions of each other. This is true except in the south, where it is more common to have never been married or to be separated.
Married, Not Including Separated
In the United States
As related to the Population 15 years and over
Compiled using estimates from the American Community Survey, 5-Year, 2009-2013