Question: The hamlet containing the hospital at which Richard Angelo murdered several patients had what population in the 2010 census?

Context paragraphs:
South Hill, Virginia: South Hill is a town in Mecklenburg County, Virginia, United States.  The population was 4,403 at the 2000 census.  Located on major Interstate and U.S. highways, it has a full-service hospital (serving patients from several rural counties), a tobacco market, and several hotels, and the SouthSide Mall.  South Hill has a close relationship with the neighboring town of La Crosse.  Lake Gaston, a large reservoir popular with boaters and fishermen, is a short distance to the southwest.

New City, New York: New City is a hamlet and census-designated place in the town of Clarkstown, Rockland County, New York, United States, part of the New York Metropolitan Area.  An affluent suburb of New York City, the hamlet is located 18 mi north of the city at its closest point, Riverdale, Bronx.  Within Rockland County, New City is located north of Bardonia, northeast of Nanuet, east of New Square and New Hempstead, south of Garnerville and Haverstraw village, and west, straight across Lake DeForest, of Congers.  New City's population was 33,559 at the 2010 census, making it the 14th most populous CDP/hamlet in the state of New York.

West Islip, New York: West Islip is a hamlet and CDP located in the Town of Islip in Suffolk County, New York, United States.  Situated on the South Shore of Long Island, the population of the CDP was 28,335 at the time of the 2010 census.

Massapequa Park, New York: Massapequa Park is a village and hamlet located within the town of Oyster Bay in Nassau County, New York, United States.  Areas south and east of the village borders are considered the hamlet of Massapequa Park because they are under the jurisdiction of the Town of Oyster Bay rather than the village.  The hamlet shares the same zip code, fire department and school district as the village.  The population was 17,008 at the 2010 census.

Fort Covington Hamlet, New York: Fort Covington Hamlet is a census-designated place (CDP) within the town of Fort Covington, Franklin County, New York, United States.  It consists of the hamlet of Fort Covington, as well as a large amount of rural land surrounding the hamlet, such that the CDP occupies about one half of the area within the town limits.  The population of the CDP was 1,308 at the 2010 census, out of a total town population of 1,676.

North Bay Shore, New York: North Bay Shore is an unincorporated neighborhood on Long Island in the Town of Islip in Suffolk County, New York, United States.  The area is a suburb of New York City.  The hamlet of "North Bay Shore" is within the northern part of the CDP of Bay Shore, New York.  The census-designated place (CDP) named "North Bay Shore" is north of, and adjacent to, the hamlet named North Bay Shore.  The CDP of North Bay Shore contains the hamlet of Pine Aire and part of the hamlet of Brentwood.  The population of the North Bay Shore CDP was 18,944 at the time of the 2010 census.

Valhalla, New York: Valhalla is a hamlet and census-designated place (CDP) located within the town of Mount Pleasant, in Westchester County, New York, United States, in the New York City metropolitan area.  Its population was 3,162 at the 2010 U.S. Census.  The name of the community was inspired by a fan of the opera composer Richard Wagner, and the hamlet is known both for its location as the home of the primary hospital campus of Westchester Medical Center and New York Medical College, as well as burial places of the remains of numerous well-known people.  The name comes from "Valhalla", a heavenly abode in Norse mythology.

Richard Angelo: Richard Angelo (born August 29, 1962) is an American serial killer and former nurse at the Good Samaritan Hospital in West Islip, New York.  In 1989, he was convicted of murdering several of his patients and sentenced to 50-years-to-life in prison.

Sheffield, Alabama: Sheffield is a city in Colbert County, Alabama, United States, and is included in the Shoals metropolitan area.  As of the 2010 census, the population of the city was 9,039.  Sheffield is the birthplace of "country-soul pioneer" and songwriter Arthur Alexander, French horn player Willie Ruff, notable attorney, actor, former senator and presidential contender Fred Thompson, Watergate committee U.S. Senator Howell Heflin and U.S. Senator Mitch McConnell, whose father was working in nearby Athens when he was born.  It sometimes is referred to as "the City of Senators" due to the births of Heflin, McConnell and Thompson within its borders.  Col. Harland Sanders worked in the Sheffield depot for Southern Railway in the 1900s.  It is also home to the Muscle Shoals Sound Studio where many popular 20th century musicians recorded their work, including Alexander and Ruff.  It is the site of historic Helen Keller Hospital, formerly known as Colbert County Hospital and originally constructed in 1921.  It was changed to Helen Keller Hospital in 1979, and Keller's birthplace Ivy Green is located less than one mile southwest of the hospital in adjacent Tuscumbia.

Lone Pine, California: Lone Pine is a census designated place (CDP) in Inyo County, California, United States.  Lone Pine is located 16 mi south-southeast of Independence, at an elevation of 3727 feet (1136 m).  The population was 2,035 at the 2010 census, up from 1,655 at the 2000 census.  The town is located in the Owens Valley, near the Alabama Hills.  From possible choices of urban, rural, and frontier, the Census Bureau identifies this area as "frontier".  The local hospital, Southern Inyo Hospital, offers standby emergency services.  On March 26, 1872, the very large Lone Pine earthquake destroyed most of the town and killed 27 of its 250 to 300 residents.

Supporting paragraphs: Richard Angelo West Islip, New York
Answer: 28,335