Foreclosure filings for March rocketed 57% from a year earlier and rose 5% from February, a foreclosure listing service said, a sign that U.S. housing woes have yet to slacken. RealtyTrac said there were 234,685 foreclosure filings in March, or one for every 538 households.

Chief Executive James J. Saccacio said many defaulting homeowners “are simply walking away and deeding their properties back to the foreclosing lender.” The process allows the bank to take the property without a foreclosure auction. As a result, bank repossessions have more than doubled, while auction notices are up only 32%.

The nation’s highest foreclosure total belonged to the most populous state — California — for the 15th straight month, with 64,711 filings, more than double a year earlier and up 21% from February. It was followed by Florida, Ohio and Georgia. Ohio and Georgia both registered increases, with more than 11,000 foreclosure filings in both states. Nevada had the highest foreclosure rate, also for the 15th straight month, with one foreclosure for every 139 households. It was trailed by California, Florida and Arizona. –Andrew Edwards