Erin is a hamlet and census-designated place in the town of Erin in Chemung County, New York, United States. The population of the CDP was 483 at the 2010 census, out of a total town population of 1,962.

Geography

Erin is located in northeastern Chemung County in the center of the town of Erin. It is in the valley of Newtown Creek, a west-flowing (and later south-flowing) tributary of the Chemung River, which in turn is a tributary of the Susquehanna River. New York State Route 223 passes through the center of Erin, leading west 3.5 miles (5.6 km) to Breesport and 7 miles (11 km) to NY-13 near the village of Horseheads. Route 223 leads northeast 5.7 miles (9.2 km) to NY-224 in the valley of Cayuta Creek, which then leads 2.5 miles (4.0 km) farther east to Van Etten.

According to the United States Census Bureau, Erin has a total area of 0.76 square miles (1.96 km), of which 0.75 square miles (1.94 km) is land and 0.008 square miles (0.02 km), or 1.26%, is water.

Demographics

Historical population

Census	Pop.	Note	%±
2020	367		—
U.S. Decennial Census