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Stay up to date with our social media platforms on how Suffolk County’s Department of Economic Development and Planning and our associates and friends are working to fulfill our mission to foster a comprehensive understanding of how to grow, improve and conserve Suffolk County’s amazing resources within both the built and natural environments. Our goal is to implement initiatives and projects to realize a Suffolk County that is modern and sustainable, where ambition, quality of life and economic growth thrive.




Suffolk County Government

H. Lee Dennison Bldg

100 Veterans Memorial Hwy
P.O. Box 6100
Hauppauge, NY 11788

Riverhead County Center

County Road 51
Riverhead, NY 11901