Question: What was the population in the 2011 census of the town that is connected to the towns of Birdwood, Woodside, Balhannah, Hahndorf, and Meadows by Onkaparinga Valley Road?

Context paragraphs:
Verdun, South Australia: Verdun is a small town in the Adelaide Hills, Australia, on the road from Hahndorf to Balhannah.  At the 2011 Australian Census the town recorded a population of 662.

Elliston, Virginia: Elliston is a census-designated place (CDP) in Montgomery County, Virginia, United States.  It lies between the city of Roanoke and the town of Christiansburg in the southwestern part of the state.  The population as of the 2010 Census was 902.  It is home to a small fire department, an elementary school, two gas stations, a train stop, and several churches.  Most of its residents commute to larger towns.  A set of railroad tracks separates the northwestern part of the town from the rest.  US highway 11-460 further divides the town into two distinct neighborhoods, "Oldtown," which formed along the Valley Road in the 1850s, and "The Brake," a predominantly African-American area that developed after the Civil War.

Charleston, South Australia: Charleston is a small town in the Adelaide Hills of South Australia.  It is situated on the Onkaparinga Valley Road between Woodside and Mount Torrens, on the main route from the Adelaide Hills to the Barossa Valley, and 3km south-east of Lobethal.  Charleston is very close to the source of the River Onkaparinga.

Onkaparinga Hills, South Australia: Onkaparinga Hills is a southern suburb of Adelaide, in the City of Onkaparinga.  It covers an area of approximately 22 km2 .  It has a population of 2534 people (2011 Census).  It is a leafy suburb that includes parts of the Onkaparinga River National Park.

Slip End: Slip End is a village and civil parish in Luton, Bedfordshire.  As well as the village of Slip End, the parish contains the hamlets of Lower Woodside, Woodside and Pepperstock.  It has a population of 1,976, reducing to 1,831 at the 2011 Census.

Frimley: Frimley is a small English town situated 2 miles (3 km) south of Camberley, in the extreme west of Surrey, adjacent to the border with Hampshire in the Borough of Surrey Heath.  It is about 30 miles (50 km) south-west of Central London.  The town is connected to the M3 motorway by the A331 Blackwater Valley Road.  The village can be considered a slightly more developed twin of Frimley Green.  Frimley became an urban district in 1894, and was renamed Frimley and Camberley in 1929.

Rawson, Victoria: Rawson is a town in Victoria, Australia, located on Tyers - Thomson Valley Road, in the Shire of Baw Baw.  The town was established for workers involved in the construction of the Thomson Dam, which was completed in 1983, Rawson Post Office opening on 17 April 1979.  At the 2011 census , Rawson had a population of 325.

Willunga, South Australia: Willunga is a town south of Adelaide, South Australia in the City of Onkaparinga local government area 47 km from the Adelaide CBD.  Sometimes considered a part of the Adelaide metropolitan area, it is located within the famous McLaren Vale wine growing region.  At the 2011 census , Willunga had a population of 2,416.

Onkaparinga Valley Road: Onkaparinga Valley Road is a South Australian secondary road, connecting the towns of Birdwood, Woodside, Balhannah, Hahndorf and Meadows in the Adelaide Hills with Willunga in the southern Adelaide metropolitan area.  It is a secondary route, hence has been given the State Route designation of B34.

Woodside, Victoria: Woodside is a village in Victoria, Australia.  At the 2011 census , Woodside and the surrounding area had a population of 488.

Supporting paragraphs: Onkaparinga Valley Road Willunga, South Australia
Answer: 2,416