Question: What is the population of the town where John McGarry grew up ?

Context paragraphs:
Fire in the Hole (Silver Dollar City): Fire in the Hole is themed around the story of Marmaros, an Ozarks hill town.  Marmaros was built near Marvel Cave and is the present day site of the theme park Silver Dollar City.  Marmaros grew out of necessity.  The miners attracted to the mining of guano from the cave along with their families began to grow in number.  The investors designed a town with the intentions of becoming a resort village such as Eureka Springs, Arkansas or Monte Ne, Arkansas.  Investments became substantial and the town’s population grew rapidly.

John McGarry (American football): John McGarry is a former guard in the National Football League.

McGarryBowen: McGarryBowen is an advertising agency founded in 2002 by John McGarry, former president of Young & Rubicam who until 2008 held roughly 90% of the company, Stewart Owen, former chief strategic officer of Young & Rubicam, and Gordon Bowen, a former executive creative director at Young & Rubicam and Ogilvy & Mather.  McGarryBowen was acquired for an undisclosed amount by Dentsu in 2008.  It currently has offices in New York, Chicago, San Francisco, London, Paris, Amsterdam, Mexico City, Bangalore, Shanghai, and Düsseldorf.

San Jose, Viga: Barangay San José or most commonly known as Barangay Oco (PSGC: 052010023) is one of the thirty-one (31) barangays and among the two (2) urbanized barangay of Viga in the province of Catanduanes, Philippines.  It lies for about 22 kilometers away from the Provincial Capital Virac, 2.4 kilometers from town proper of Viga and with the distance of 16 kilometers to the nearby town of San Miguel.  According to the latest census, it has a population of 1,163 inhabitants (grew from 1,040 in Census 2007).  In August 2015 census, the population grew +0.33% from 1,163 to 1,183 inhabitants.

Isiolo: Isiolo is a town in the former Eastern Province, Kenya.  It is situated in the Upper Eastern sub-region, and lies 285 kilometres north of Nairobi, the capital city of Kenya.  The town grew around the local military camps, much of the population being descended from former Somali soldiers who had fought in World War I as well as other Cushitic-speaking pastoral communities and the Ameru community.  The town has an estimated population of 80,000 people, most of them living in the rural outbacks of the District.  There is an increasing urban population in the recent years, especially from as far as Moyale, Marsabit and Mandera.  The Isiolo town is also becoming a centre of interest because of its newly acquired status as a resort city cashing in on the popular Samburu and Shaba Game reserves, which have become preferred destinations after the famed Maasai Mara.  Isiolo lies along the long A2 Road, leading towards Marsabit and Moyale much farther north.  The town is served by Isiolo Airport, which is set to be upgraded to an International Airport to serve tourism and local exports.

History of Atlanta: The history of Atlanta dates back to 1836, when Georgia decided to build a railroad to the U.S. Midwest and a location was chosen to be the line's terminus.  The stake marking the founding of "Terminus" was driven into the ground in 1837 (called the Zero Mile Post).  In 1839, homes and a store were built there and the settlement grew.  Between 1845 and 1854, rail lines arrived from four different directions, and the rapidly growing town quickly became the rail hub for the entire Southern United States.  During the American Civil War, Atlanta, as a distribution hub, became the target of a major Union campaign, and in 1864 Union William Sherman's troops set on fire and destroyed the city's assets and buildings, save churches and hospitals.  After the war the population grew rapidly, as did manufacturing, while the city retained its role as a rail hub.  Coca-Cola was launched here in 1886 and grew into an Atlanta-based world empire.  Electric streetcars arrived in 1889, and the city added new "streetcar suburbs".

Audra, Texas: Audra is a ghost town in Taylor County, Texas.  Established around the beginning of the 20th century, the town grew around a general store built by C. Meno Hunt, Fred Robinson, and Frank Sheppard.  The town was named after Sheppard's daughter.  In 1905, the population grew to a peak of around 75.  However, in response to the construction of a railroad through the area, the town was abandoned and its residents founded the town of Bradshaw to the east.

Fuquay-Varina, North Carolina: Fuquay-Varina is a town in Wake County, North Carolina, United States.  The population was 18,644 in 2012 (State Certified as of July 1, 2012).  The population was 17,937 at the 2010 census, up from 7,898 at the 2000 census.  The town is a 25-minute drive south of Raleigh, the capital of North Carolina.  The hyphenated name attests to the town's history as two separate towns.  Fuquay Springs and Varina merged in 1963 to create the modern town.  Economically, the town initially grew due to tobacco trade and agriculture, but has seen recent population growth and real estate development due to its proximity to Research Triangle Park.

Ballymena: Ballymena (from Irish: "an Baile Meánach" , meaning "the middle townland" , ] ) is a large town in County Antrim, and the eighth largest in Northern Ireland.  It is part of Mid and East Antrim Borough Council.  It had a population of 29,467 people in the 2011 Census.

John McGarry: John McGarry, OC (born 1957) is a political scientist from Northern Ireland.  He was born in Belfast and grew up in Ballymena, County Antrim.  He is currently Professor of Political Studies and Canada Research Chair in Nationalism and Democracy at Queen's University in Kingston, Ontario, Canada.  He is the author of numerous influential books about ethnic conflict and particularly The Troubles.  Many of the books were co-authored with Brendan O'Leary, whom McGarry met when they both attended Saint MacNissi's College.  McGarry and O'Leary's "Policing Northern Ireland: Proposals for a New Start" (Blackstaff Press, 1999) had a significant influence on the work of the Independent Commission on Policing for Northern Ireland.  He currently sits on the advisory council of the Centre for the Study of Democracy and worked as a senior advisor on power-sharing to the United Nations in 2008–09.

Supporting paragraphs: John McGarry Ballymena
Answer: 29,467