Five U.S. states contributed half of the 66,000 foreclosures completed in the month of April, real estate data firm CoreLogic (CLGX) said Wednesday in its National Foreclosure Report.

Those states are California (142,000 foreclosures), Florida (92,000), Michigan (60,000), Texas (58,000) and Georgia (57,000).

The 66,000 foreclosures completed in April compares to 78,000 foreclosure actions a year earlier.

Since the start of the financial crisis in September 2008, the nation has experienced 3.6 million completed foreclosures.

"There were more than 830,000 completed foreclosures over the past year or, in other one completed foreclosure for every 622 mortgaged homes," said Mark Fleming, chief economist for CoreLogic. "Non-judicial foreclosure markets, like Nevada, Arizona and California, completed two and a half times as many foreclosures over the past year as foreclosure states."

States with the lowest number of completed foreclosures for the 12 months ending in April included South Dakota (62 foreclosures); District of Columbia (162); North Dakota (541), West Virginia (598) and Hawaii (601).