| Sunnyside | |
| Settlement Type: | Neighborhood of Staten Island |
| Coordinates: | 40.6131°N -74.1039°W |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | City |
| Subdivision Name2: | New York City |
| Subdivision Type3: | Borough |
| Subdivision Name3: | Staten Island |
| Demographics Type1: | Race and Ethnicity |
| Demographics1 Title1: | White |
| Demographics1 Title2: | Black |
| Demographics1 Title3: | Hispanic |
| Demographics1 Title4: | Asian |
| Demographics1 Title5: | other |
| Demographics1 Info5: | --> |
| Demographics Type2: | Economics |
| Demographics2 Title1: | Median income |
| Demographics2 Info1: | $XX,XXX--> |
| Postal Code Type: | ZIP Code |
| Postal Code: | 10301 |
| Area Code: | 718, 347, 929, and 917 |
Sunnyside is the name of a neighborhood in the Mid-Island region of the New York City borough of Staten Island (not to be confused with the neighborhood of the same name in the borough of Queens).
Sunnyside was originally farmland on either side of Clove Road. As farms gave way to residential housing, the Vanderbilt family built homes in the area, including two which still stand at the corner of Victory Boulevard and Clove Road. The area was once known as Clove Valley or Clovenia, and then adopted the name Sunnyside from a boarding house that was established there in 1889.
Prior to the advent of cable television service, Sunnyside was noted for having the worst television reception on Staten Island. This resulted from its being hemmed in by several hills, including Grymes Hill, Emerson Hill and Castleton Hill, the latter separating Sunnyside from neighboring Castleton Corners.
Sunnyside was once the home of a campus of the College of Staten Island, located at the foot of Emerson Hill. In 1993 this campus was moved to the grounds of the former Willowbrook State School, and an advanced-placement high school, the Michael J. Petrides School, took its place. This center is also an evacuation site for residents during floods or other emergencies.
Sunnyside Hospital was located on Little Clove Road and Ontario Avenue, but was demolished in the 1960s to make way for the Staten Island Expressway (I-278).
A large percentage of Sunnyside's residents are civil service workers, this demographic trait being typical of many Mid-Island neighborhoods.
Sunnyside is situated amid several large city parks: Clove Lakes Park and Silver Lake Park to the north, and Deere Park to the south. Slosson Avenue forms an unofficial western boundary, separating Sunnyside from Castleton Corners. Clove Road and Ocean Terrace approximate an eastern boundary, separating Sunnyside from Grymes Hill and Emerson Hill.
Sunnyside is served by the local buses and the express buses.