Question: What is the population of the source town of the Hannacrois Creek?

Context paragraphs:
Taghkanic Creek: Taghkanic Creek is a 30.1 mi tributary to Claverack Creek in Columbia County, New York, in the United States.  Via Claverack Creek and Stockport Creek, it is part of the Hudson River watershed.  Its source is in the town of Hillsdale, and it passes through the towns of Copake, Taghkanic, and Livingston before terminating at Claverack Creek in the town of Greenport.

Eightmile Creek (Tenmile Creek): Eightmile Creek is an 11.8 mi tributary of Tenmile Creek in Albany County, New York.  Via Tenmile Creek and Catskill Creek, it is part of the Hudson River watershed.  Eightmile Creek runs through the town of Westerlo into the town of Rensselaerville, where it joins Tenmile Creek at the hamlet of Medusa.  The creek's source is near Onderdonk Lake by Snyders Corners in Westerlo.

Claverack Creek: Claverack Creek is a 17.5 mi tributary to Stockport Creek in Columbia County, New York, in the United States.  Its source is in the town of Claverack at the hamlet of Mellenville, and its mouth is at its confluence with Kinderhook Creek to form Stockport Creek, in the town of Stockport.

Hannacrois Creek: Hannacrois Creek is a 20.9 mi tributary to the Hudson River in the U.S. state of New York.  From its source in Westerlo it flows through Dunbar Hollows and over Dickinson Falls to the Alcove Reservoir.  It then passes through Coeymans Hollow and just into Greene County to its mouth at the Hudson River in Coeymans, New York.

Los Gatos Creek (Fresno County, California): Los Gatos Creek formerly known as Arroyo Pasajero or Arroyo Poso de Chane, is a creek in Fresno County, California.  Its source is in the north end of Garcia Canyon in the Diablo Range near Benito Pass.  From there it runs through Los Gatos Canyon, in the eastern foothills of the Diablo Range, then passes across Pleasant Valley, north of Coalinga, where Warthan Creek joins it east of the town.  Then it flows eastward to its confluence with Jacalitos Creek, before it passes to the north of the Guijarral Hills, into the San Joaquin Valley, where it is joined by Zapato Chino Creek.

Bear Creek (Colorado): Bear Creek is a tributary of the South Platte River in central Colorado in the United States.  Its source is Summit Lake near Mount Evans.  The stream flows to a confluence with the South Platte River in Sheridan, Colorado just south of Denver.  Bear Creek runs through the Bear Creek Watershed.  Bear Creek Watershed is a 236 sq. mile watershed including all tributaries that discharge into the Bear Creek Reservoir.  The two main tributaries are Bear Creek and Turkey Creek.  The watershed extends from Mount Evans Wilderness to the Town of Morrison.

Kinderhook Creek: Kinderhook Creek is a 49.0 mi tributary to Stockport Creek, an inlet of the Hudson River in the United States.  From its source in Hancock, Massachusetts, the creek runs southwest through the Taconic Mountains into Rensselaer County, New York, and then into Columbia County.  It flows through the towns of Stephentown, New Lebanon, Nassau, Chatham, Kinderhook and Stuyvesant to its mouth at Stockport Creek in the town of Stockport.

Stockport Creek: Stockport Creek is a 2.4 mi tributary to the Hudson River in the town of Stockport, New York, in the United States.  Its source is the confluence of Kinderhook Creek and Claverack Creek near the village of Stockport.  Its mouth is at the Hudson River at the western boundary of Stockport.  The creek is tidal for about one mile inland from the Hudson River.

Ninemile Creek (Onondaga Lake): Ninemile Creek, also known as Nine Mile Creek, is a stream in Central New York in the United States.  Its source is at Otisco Lake in the town of Marcellus, from where the creek runs northward for 21.75 mi through the villages of Marcellus and Camillus to Onondaga Lake in the town of Geddes.  Nine Mile Creek is a scenic stream noted for trout fishing.

Westerlo, New York: Westerlo is a town in Albany County, New York, United States.  The population was 3,361 at the 2010 census.

Supporting paragraphs: Hannacrois Creek Westerlo, New York
Answer: 3,361