Past-due payments on mortgages spiked last month, though the deterioration was attributed to seasonal factors. The rate of foreclosures, however, was lower.
During June, residential loans that were at least 30 days past due numbered 4,785,000, climbing from 4,569,000 a month earlier. The count includes loans in the process of foreclosure.
But delinquencies have improved from a year earlier, when the number of home loans with late payments came to a total of 5,663,000.
The delinquency data was released Thursday by Lender Processing Services Inc., which claims its data covers 70 percent of the market.
The 30-day rate, including loans in foreclosure, worked out to 9.61 percent in June.
The non-current rate worsened from May, when it came in at 9.13 percent.
But total delinquency has improved substantially from the same month in 2012, when 11.32 percent of all residential loans were at least a month past due or in foreclosure.
LPS said that the states with highest rate of non-current loans were Florida, Mississippi, New Jersey, New York and Maine.
The states with the lowest level of delinquency were Wyoming, Montana, Alaska, South Dakota and North Dakota.
The U.S. non-current rate reflected a 30-day delinquency rate, excluding foreclosures, of 6.68 percent, surging from May's 6.08 percent but lower than the 7.14 percent rate in place as of June 30, 2012.
The foreclosure pre-sale inventory rate was 2.93 percent in June, lower than 3.05 percent reported by LPS for the previous month.
At the same point in 2012, the foreclosure rate was 4.09 percent.