a county in SE central England, containing the Vale of Aylesbury and parts of the Chiltern Hills: the geographic and ceremonial county includes Milton Keynes, which became an independent unitary authority in 1997. Administrative centre: Aylesbury. Pop (excluding Milton Keynes): 478 000 (2003 est). Area (excluding Milton Keynes): 1568 sq km (605sq miles)
Abbreviation: Bucks
Buckinghamshire in American English
(ˈbʌkɪŋəmˌʃɪr; ˈbʌkɪŋəmʃər)
county in SC England: 725 sq mi (1,877 sq km); pop. 632,000