in 2010, and 257,442 in 2008. Structure The mayor is the chief executive officer of the city and is responsible for appointing city department heads including; the director of public safety, the director of streets & traffic, the director of health, the director of human services, the director of the airport, the director of parks & recreation, the director of workforce development, the director of the Community Development Agency, the director of economic development, the director of public utilities, the director of the Civil Rights Enforcement Agency, the register, and the assessor, among other department-level or senior administrative positions. The President of the Board of Aldermen is the second highest-ranking official in the city. The President is the presiding officer of the Board of Aldermen which is the legislative branch of government of the city. Municipal elections in St. Louis are held in odd-numbered years, with the primary elections in March and the general election in April. The mayor is elected in odd-numbered years following the United States presidential election, as are the aldermen representing odd-numbered wards. The president of the board of aldermen and the aldermen from even-numbered wards are elected in the off-years. The Democratic Party has dominated St. Louis city politics for decades. The city has not had a Republican mayor since 1949, and the last time a Republican was elected to another citywide office was in the 1970s. , all 28 of the city's aldermen are Democrats. Forty-seven individuals have held the office of mayor of St. Louis, four of whom—William Carr Lane, John Fletcher Darby, John Wimer, and John How—served non-consecutive terms. The most terms served by a mayor was by Lane, who served 8 full terms plus the unexpired term of Darby. The current mayor is Tishaura Jones, who took office April 20, 2021, and is the first African-American woman to hold the post. She succeeded Lyda Krewson, the first female mayor of the city, who retired in 2021 after serving for four years. The longest-serving mayor was Francis Slay, who took office April 17, 2001, and left office April 18, 2017, a total of 16 years and six days over four terms in office. The shortest-serving mayor was Arthur Barret, who died 11 days after taking office. Although St. Louis separated from St. Louis County in 1876, some mechanisms have been put in place for joint funding management and funding of regional assets.