Arlington County, Virginia addition to receiving the lowest proportion of Arlington's vote for a Democratic or Republican candidate in the past century. Arlington is part of Virginia's 8th congressional district, represented by Democrat Don Beyer. The United States Postal Service designates zip codes starting with "222" for exclusive use in Arlington County. However, federal institutions, like Ronald Reagan Washington National Airport and The Pentagon use Washington zip codes. Arlington has consistently had the lowest unemployment rate of any jurisdiction in Virginia. The unemployment rate in Arlington was 4.2% in August 2009. 60% of office space in the Rosslyn-Ballston corridor is leased to government
Arlington County Fire Department The Arlington County Fire Department holds a Class 2 Rating from the Insurance Services Organization, the second-highest rating given to a Virginia fire department, and one of only three such ratings awarded in the state. This rating helps the local community by bringing lower insurance rates to homeowners and businesses. Arlington County Fire Department is a career fire department, with over 380 sworn career firefighters. All units are staffed 24 hours a day by career firefighter/EMTs who are divided into three platoons. Engine, rescue and truck/tower companies in Arlington are typically staffed by three firefighter/EMTs and one firefighter/paramedic, and ALS