Many homeowners with mortgages remain underwater after the housing crash. Those regions that experienced the biggest home price declines and are farthest away from major job centers are often now among the hardest hit.

Methodology: The real estate web site Zillow calculated negative equity in the region by matching the estimated value of a home to all outstanding mortgage debt and lines of credit associated with the property via the credit firm TransUnion.

Source: Negative equity visualization provided by Zillow