The history of Spring Valley, located in Rockland County, New York, is closely tied to the development of the railroad in the 19th century. Before the arrival of the rail line, the area was largely unsettled. In 1842, the New York & Erie Railroad laid tracks through the region and named the station "Pascack" after a nearby stream. However, the local residents—including Scottish settlers who had initially called the area "Scotland"—chose the name Spring Valley for their settlement. This name was inspired by a large spring located in the Valley Pond.
The railroad was the key factor in the establishment of Spring Valley. A small station built by local farmers allowed them to access markets for their produce, which sparked economic growth and attracted new residents to the region. Its geographical location—just 35 kilometers (about 22 miles) north of Manhattan—made Spring Valley an attractive place to live and visit. Spring Valley officially received village status on July 9, 1902.
In the first half of the 20th century, Spring Valley flourished as a popular summer destination, drawing many New Yorkers, especially during the years leading up to and during World War II. During this time, numerous resorts and boarding houses operated in the area. The economy, which was initially agricultural, gradually diversified. The opening of a post office in 1848 and the establishment of institutions like schools and theaters marked the cultural and social development of the settlement. The town also drew the attention of prominent figures, with Presidents Theodore Roosevelt, Franklin D. Roosevelt, and Harry S. Truman all visiting at various times.