Question: what is the population of town that Whitworth railway station served at the 2011 Census?

full_context: Document 1: Harts Hill railway station: Harts Hill railway station was a station on the Oxford-Worcester-Wolverhampton Line. It was opened in 1895 by a GWR keen to invest in what was perceived to be the lucrative passenger area of the Black Country, and it was intended to serve the communities between Brierley Hill and Dudley. It closed, like many passenger stations, in 1916 due to the First World War, but was consequently never reopened when the passengers failed to materialise. Two railways/routes served the station - originally the Oxford, Worcester and Wolverhampton Railway and the South Staffordshire Railway, which later became the Great Western Railway and London, Midland and Scottish Railway (through amalgamation of the London and North Western Railway) respectively.
Document 2: Wardle, Greater Manchester: Wardle (pop. 7,092) is a village within the Metropolitan Borough of Rochdale, in Greater Manchester, England. It lies amongst the foothills of the South Pennines, 1.8 mi east-southeast of Whitworth, 2.5 mi north-northwest of Rochdale and 12 mi north-northeast of the city of Manchester.
Document 3: Blackburn: Blackburn is a large town in Lancashire, England. It lies to the north of the West Pennine Moors on the southern edge of the Ribble Valley, 9 mi east of Preston, 20.9 mi NNW of Manchester and 9 mi north of the Greater Manchester border. Blackburn is bounded to the south by Darwen, with which it forms the unitary authority of Blackburn with Darwen; Blackburn is its administrative centre. At the time of the UK Government's 2001 census, Blackburn had a population of 105,085, whilst the wider borough of Blackburn with Darwen had a population of 140,700. Blackburn had a population of 117,963 in 2011, a massive increase since 2001.
Document 4: Littleborough, Greater Manchester: Littleborough is a town within the Metropolitan Borough of Rochdale, in Greater Manchester, England. It is located in the upper Roch Valley by the foothills of the South Pennines, 3 mi northeast of Rochdale and 12.6 mi north-northeast of Manchester; Milnrow and the M62 motorway are to the south, and the rural uplands of Blackstone Edge are to the east. In 2001, Littleborough and its suburbs of Calderbrook, Shore and Smithy Bridge, had a population of 13,807,
Document 5: Brown Wardle Hill: Brown Wardle is a hill between the village of Wardle, Greater Manchester and the town of Whitworth, Lancashire. The summit is on the border of Greater Manchester and Lancashire and stands 400m (1,312 ft) above sea level, making it one of the highest points in Rochdale and Greater Manchester. It forms part of the South Pennines, lying within the historic county boundaries of Lancashire.
Document 6: Ashbourne railway station: Ashbourne railway station formerly served the town of Ashbourne in Derbyshire. There have been two stations in the town. The first, opened in 1852, was operated by the North Staffordshire Railway (NSR); it was replaced in 1899 by a station at a new location, jointly operated by the NSR and the London and North Western Railway (LNWR). In 1923 the station passed into the ownership of the London, Midland and Scottish Railway and in 1948 that of the London Midland Region of British Railways. It was finally closed to all traffic in 1963 (regular passenger services having been withdrawn in 1954).
Document 7: Whitworth, Lancashire: Whitworth is a small town and civil parish in Lancashire, England, amongst the foothills of the Pennines between Bacup, to the north, and Rochdale, to the south. It had a population of 7,500 at the 2011 Census.
Document 8: Spring Vale railway station: Spring Vale railway station was a railway station that served the community of Spring Vale, in Darwen, Lancashire, England. It was opened by the Bolton, Blackburn, Clitheroe and West Yorkshire Railway on 3 August 1847, and was originally named "Sough". At first, it was the southern terminus of the line from Blackburn (Bolton Road); the line south of Sough to Bolton opened on 12 June 1848. The station was renamed "Spring Vale and Sough" in November 1870, and "Spring Vale" on 1 March 1877. It was closed on 5 August 1958, two days after nearby Lower Darwen .
Document 9: Whitworth railway station: Whitworth railway station served the town of Whitworth in Rossendale, Lancashire, England, from 1870 until closure in 1947.
Document 10: Darwen railway station: Darwen railway station serves Darwen, a town in Lancashire, England. It was opened in 1847 by the "Bolton, Blackburn, Clitheroe & West Yorkshire Railway", which was subsequently taken over by the Lancashire and Yorkshire Railway twelve years later. It is now served by Northern services on the Ribble Valley Line from Manchester Victoria/Bolton to Blackburn and into Clitheroe.
Document 11: Buckshaw Parkway railway station: Buckshaw Parkway is a British railway station which opened on 3 October 2011 on the Manchester to Preston Line, near Euxton Junction with the West Coast Main Line. It is one of Euxton's two railway stations being in Buckshaw Village, formerly the Royal Ordnance Factory (ROF Chorley) between Chorley and Leyland. It is on the site of the four-platform Chorley ROF Halt, which was closed around 1942; this prior station remained virtually intact until the 1970s, but was finally cleared in the early 2000s.
Document 12: Whalley railway station: Whalley railway station serves the village of Whalley in Lancashire, England. The station lies on the Ribble Valley Line 7+1/4 mi north of Blackburn. The station has two platforms, slightly offset from each other. It is unstaffed, with shelters on each platform. Immediately beyond its eastern end, the line crosses the River Calder on a 678 yd long, brick viaduct of 48 arches.
Document 13: Widnes: Widnes is an industrial town in the unitary authority of Halton and the ceremonial county of Cheshire in Northwest England. In 2011 it had a population of 60,221. Historically in Lancashire, it is on the northern bank of the River Mersey where the estuary narrows to form the Runcorn Gap. Directly to the south across the Mersey is the town of Runcorn. Upstream and 8 mi to the east is the town of Warrington, and downstream to the west is Speke, part of the city of Liverpool.
Document 14: Rossett railway station: Rossett was a minor railway station located on the Great Western Railway's Paddington to Birkenhead line several miles north of Wrexham in Wales. The route is still open today as part of the Shrewsbury to Chester Line. Originally, there was a level crossing just north of the platforms but this has been reduced to the status of a foot and cycleway crossing. To the south of the station there were once goods loops on both sides of the line as well as extensive sidings on the east side. Part of the old Up (southbound) platform still survives. The double track on the Wrexham to Chester section was singled in 1983 but has been redoubled between Rossett and Saltney, with work finally completed in April 2017 (a year later than scheduled).
Document 15: Whitworth Street: Whitworth Street is a street in Manchester, England. It runs between London Road (A6) and Oxford Street (A34). West of Oxford Street it becomes Whitworth Street West which then goes as far as Deansgate (A56). It was opened in 1899 and is lined with many large and grand warehouses. It is named after the engineer Joseph Whitworth whose works once stood along the route. Whitworth Street West runs alongside the viaduct connecting Oxford Road and Deansgate railway stations: beyond Albion Street the Rochdale Canal is on the northern side. On the Albion Street corner is the building once occupied by the Haçienda nightclub at nos. 11-13 while further east on the same side is the Ritz.
ground_truth: 7,500