Medford’s Century Bancorp Inc. has reported $7.9 million in net income for the first six months ended June 30, a 24 percent increase from the same period a year ago.

Total assets also increased 6.4 percent to $2.6 billion at June 30, 2011, up from $2.4 billion at Dec. 31, 2010. For the quarter ended June 30, 2011, net income totaled $4.2 million, up from $2.96 million for the second quarter of 2010.

The company’s board of directors voted a regular quarterly dividend of 12-cents per share on the company’s Class A common stock, and 6-cents per share on the company’s Class B common stock. The dividends were declared payable Aug. 15 to stockholders of record on Aug. 1.