Question: The Barberville Falls is a Waterfall and Nature preserve located in a town whose population at the 2010 census was what?

Context paragraphs:
Hemlock Bluffs Nature Preserve: Hemlock Bluffs Nature Preserve is a joint project between the North Carolina state park system and the Town of Cary in Wake County, North Carolina in the United States.  Located in Cary, it covers approximately 140 acres in the Research Triangle region of the state.  The state owns 97 acres of the preserve, known as Hemlock Bluffs State Natural Area.  The Town of Cary owns approximately 42 acres of the preserve, and the town leases the state's land for management.  The preserve protects a population of Eastern Hemlock trees and other vegetation more typically found further west, in the Appalachian Mountains.  The tall, north-facing bluffs of Swift Creek provide conditions similar enough to the mountains to have allowed the plant communities to have survived here since the last ice age.

Lake Renwick Preserve: The Lake Renwick Preserve is an 836 acre county forest preserve located in Will County, Illinois.  It is the second largest county-owned nature preserve in Will County.  The closest major town is Plainfield, Illinois.  It is best known as a nesting location for herons and other wading birds.

Campbell Falls State Park Reserve: Campbell Falls State Park Reserve is an undeveloped, publicly owned recreation area and nature preserve located in the town of Norfolk, Connecticut.  The state park offers hiking, stream fishing, and views of the park's namesake waterfall which cascades nearly 100 ft on the Whiting River just north of the Connecticut/Massachusetts state line.  Legislation passed in 1923 and 1924 provided for the joint management of the park after the land was donated to the two states by the Whiting Memorial Foundation.  A stone monument within the park marks the border between the states.

The Turner Brook Reserve: The Turner Brook Reserve is a nature preserve located in Forestburgh, New York, United States.  Its western boundary runs along the Cold Spring Road in Forestburgh and its easternmost point is High Falls in The Neversink Gorge.  The reserve is named after Turner Brook, a stream that runs along the westernmost part of the reserve and flows into Gillman Pond.

Tannery Falls: Tannery Falls is a waterfall on Tannery Creek located near the city of Munising, Michigan.  The Falls are also sometimes called the Rudy M. Olson Memorial Falls.  The grave site of Rudolf Olsen can be seen on the path leading to the falls alongside a set of stairs.  Tannery Creek flows behind a small residential area before reaching The falls which drop 40 ft into an impressive sandstone canyon.  There is a cave behind the falls.  The level of water coming over the falls can vary greatly depending on snow melt or rainfall.  Tannery Falls is one of the less-advertised and less-maintained falls in the area.  For a number of years, the falls were under private ownership.  The land around the area was purchased by the Michigan Nature Association which created a public nature preserve that includes the nearby Memorial Falls.

Poestenkill, New York: Poestenkill is a town in Rensselaer County, New York, United States.  The population was 4,530 at the 2010 census.  The town is named after the Poesten Kill, an important stream in the area.

St. George, Maine: St. George is a town in Knox County, Maine, United States.  The population was 2,591 at the 2010 Census.  It includes the villages of Port Clyde, Clark Island, Glenmere, Martinsville and Tenants Harbor, the latter its commercial center.  A favorite with artists, writers and naturalists, St. George is home to the Brothers and Hay Ledge nature preserve, comprising four islands off Port Clyde.

Point Reyes National Seashore: Point Reyes National Seashore is a 71028 acre park preserve located on the Point Reyes Peninsula in Marin County, California.  As a national seashore, it is maintained by the US National Park Service as an important nature preserve.  Some existing agricultural uses are allowed to continue within the park.  Clem Miller, a US Congressman from Marin County wrote and introduced the bill for the establishment of Point Reyes National Seashore in 1962 to protect the peninsula from development which was proposed at the time for the slopes above Drake's Bay.  All of the park's beaches were listed as the cleanest in the state in 2010.

Petersburg, Nebraska: Petersburg is a village in Boone County, Nebraska, United States.  The population was 333 at the 2010 census.  Petersburg is the site of a memorial to Logan Fontenelle, an Omaha chief who was killed nearby, in a skirmish with Brulé and Arapaho in 1855, at the site of the present-day Olson Nature Preserve.

Barberville Falls: The Barberville Falls is a Waterfall and Nature preserve located in Poestenkill, New York.  The fall flows into the Poesten Kill, which is a large creek that flows through Rensselaer County.

Supporting paragraphs: Barberville Falls Poestenkill, New York
Answer: 4,530