Medford-based Century Bancorp has reported a second-quarter gain of 15.6 percent in net income compared to the second quarter last year.

The bank reported net income of $1.87 million, or 34 cents per share, when compared to net income of $1.6 million, of 29 cents per share from the same time last year.

For the first six months of 2008 net interest income totaled $20.9 million compared to $19 million in the same time period in 2007.

The company's board of directors voted a quarterly dividend of 12 cents per share on Class A common stock, and 6 cents per share on Class B common stock.