The latest FDIC quarterly numbers show Massachusetts banks struggling under a steady increase in the most ominous type of loan. Overall assets in "non-accrual" status – loans well past 90 days overdue and unlikely to be recovered – stood at $946.4 million as of Sept. 30, compared to $871.7 million as of the second quarter.

Of that, loans on single-family residential properties were a major factor in plumping up the non-accrual category; they increased by $43.1 million between the second and third quarters, while commercial and industrial loans were relatively steady.

Massachusetts’ banks also find themselves owning more and more real estate: As of Sept. 30, banks owned $50.3 million in single-family residential properties, a major jump from the $36.2 million it owned in the second quarter. They also increased commercial real estate properties, going from $33.3 million to $40.1 million.

Banks have managed, however, to draw down the amount of outstanding delinquencies with credit card debt: delinquencies more than 90 days past due dropped by $52 million in September, down to $71 million overall. Otherwise, total assets grew slightly, from $98 billion to $98.1 billion, while deposits also crept up to $74.5 billion compared to $74.3 billion in the year before. Equity capital increased from 9.8 billion to $10.2 billion.

State Street Financial was not included in these statistics because its size and activities vary widely from the majority of the state’s financial institutions.