Throughout the Civil War, the principal responsibility for Virginia's indigent soldiers' families lay with the locality. The Virginia State Convention in 1861 gave the responsibility entirely to counties and incorporated towns and authorized whatever actions had already been taken. Acts of Assembly in 1862 and 1863 expanded the localities' powers to provide for their needy, and in 1863 some minimal state assistance was added in. At first relief was provided as money, but as the monetary system collapsed, relief was distributed in kind. Agents of the court maintained lists of eligible families, gathered goods for distribution and paid for them, and impressed supplies if necessary. Virginia was unique amongst the southern states in that it assigned the provisioning of needy families almost solely to the locality.

New Kent County may have been named either for the English county of Kent or for Kent Island, in the upper waters of the Chesapeake Bay. William Claiborne, a native of Kent who had been driven from Kent Island by Lord Baltimore, was a prominent resident of the New Kent area about 1654 when the county was formed from York County. Part of James City County was added in 1767. The county seat is New Kent.

Records were destroyed when John Posey set fire to the courthouse on 15 July 1787. Many records were lost when the courthouse was partially destroyed by fire during Civil War hostilities in 1862. Additional records were burned in Richmond on 3 April 1865, where they had been moved for safekeeping during the Civil War.