SNL Financial tracking firm says total loans were $27.48 billion then, $41.64 billion in second quarter 2012.
Firm says Washington DC area credit union leads nation with lowest rates.
Melrose Credit Union claims the top spot in SNL Financial's 2012 ranking of the 50 best-performing credit unions with more than $500 million in assets.
As credit unions loans inched up to nearly $600 billion, lending at some community banks has been down for at least the past five months.
Credit unions with fields of membership in certain communities across the U.S. may get an opportunity to purchase a Bank of America branch.
Report cites non-performing assets and says nearly half of community banks in TARP program are not current on their own paybacks.