Farnborough/Aldershot built-up area and Aldershot Urban Area are names used by the Office for National Statistics (ONS) to refer to a conurbation spanning the borders of Surrey, Berkshire and Hampshire in England,[1] and covering an area of 81.9 km2. The ONS found a population of 266,358 in 2021[1] (up 4.66% from the 2011 figure of 254,499 residents).[2] This makes it the 29th-largest built-up area in England.[citation needed][clarification needed]
A conurbation consisting of Aldershot and Farnborough, together with Frimley and Camberley was identified as a conurbation since at least the mid 20th century. These four places had a total population of 70,000 in 1931 which grew to 91,700 by 1961.[3]
Most of the conurbation lies alongside the River Blackwater which gives a wider area including Fleet (which is not geographically in the Blackwater Valley) the alternate name of Blackwater Valley.[4]
The area forms part of the London metropolitan area[5] and borders the Metropolitan green belt. It almost adjoins the somewhat lower density Reading/Wokingham Urban Area at Sandhurst.