The Boston City Council was the bicameral legislative body of Boston, Massachusetts, United States, from 1822 until 1909. Its upper chamber was the Board of Aldermen, whose members were elected at-large, while the lower chamber was the much larger Common Council, whose members were elected from multi-member electoral districts (wards). Prior to 1822, the Boston Board of Selectmen governed the city. The bicameral council lasted until 1909, when it was replaced by the modern Boston City Council. Unlike the bicameral 1822 council, the modern council that was established in 1909 is unicameral.