Mortgage delinquencies declined in September.

The U.S. League of Savings Institutions reported that a nationwide survey of 900 savings institutions indicated that 1.64% of all residential loans were delinquent for 60 days or more in September, down from 1.76% in August. William B. O’Connell, the group’s president, said that, aside from month-to-month fluctuations, mortgage delinquencies had been on a downward trend from their 1985 peak of 2.22% in January.