Bedfordshire is a county in the
East of England.
 It is bounded by
Hertfordshire to the south-east,
Cambridgeshire to the north-east,
Northamptonshire to the north, and
Buckinghamshire to the west.
 It has an area of 1,235 square kilometres (477 sq mi), and population estimated in 2015 at 630,000, with an increase of 10% over the previous ten years.
 The county town is
Bedford, and the name is first recorded in the
treaty in about 879 between King
Alfred the Great and
Guthrum, which divided English and Danish territory by a line which went through Bedford.
Southern Bedfordshire is part of the
Area of Outstanding Natural Beauty. North and mid Bedfordshire are undulating claylands with broad river valleys of the
River Great Ouse and its tributaries, and the
Bedfordshire Greensand Ridge.
Cretaceous clays are overlaid by
Quaternary glacial deposits of chalky boulder clay.
There are forty
Sites of Special Scientific Interest (SSSIs) in
Bedfordshire, designated by
Natural England. Thirty-five are listed for their biological interest, and five for their geological interest.
 Three of the sites are also
National nature reserves, twelve are in the
Area of Outstanding Natural Beauty, and eleven are managed wholly or partly by the
Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire. In 2009 Bedfordshire was divided into three
unitary local authorities: thirty-two sites are in
Central Bedfordshire, eight in
Bedford and none in