In the years following the American Revolution , the City 's central location made it a logical choice for the state capital , and in 1808 Concord was named the official seat of state government . Today the 1819 State House is the oldest state capitol in which the legislative branches meet in their original chambers . In 1808 , Concord was named the official seat of state government , its 1819 State House the oldest capitol in which legislative branches meet in their original chambers .