- Your Ad Here Albany County is a county located in the U.S. state of New York. As of the 2016 census, the population was 308,846. The county seat is Albany, the state capital. Sponsored Links History The name is from the title of the Duke of York and Albany, who became James II of England. As originally established, Albany County had an indefinite amount of land, but has only 530 square miles (1,372.69 kms) as of March 3, 1888. |