The well-known Longwood Gardens is located in East Marlborough Township.

[3] According to the United States Census Bureau, the township has a total area of 15.6 square miles (40 km2), all land.

Adjacent townships At the 2010 census, the township was 89.2% non-Hispanic White, 1.4% Black or African American, 0.2% Native American, 3.6% Asian, 0.1% Native Hawaiian or other Pacific Islander, and 1.3% were two or more races.

The majority of East Marlborough Township lies within the Unionville-Chadds Ford School District, with an exclave of the township lies within the Kennett Consolidated School District.

It follows the Kennett-Oxford Bypass and Baltimore Pike along the southern and southeastern edge of the township.

Finally, Pennsylvania Route 926 follows Street Road on a southwest-northeast alignment through the central portion of the township.