Welcome to Nassau County! The western half of
Long Island in southern New York State.

Nassau County delivers the best of all things—vibrant businesses, walkable downtowns, suburban charm, the nearby buzz of New York City, and one-step access to the world. Come to the place top-tier talent and innovative businesses call home.

  • Innovative industry
  • High-Tech infrastructure
  • Transit-oriented-development
  • Mixed-use development
  • Global brand headquarters
  • Convenient Inter-County Bus System
  • Best Hospitals
  • Vibrant downtowns
  • Corporate and industry parks
  • Beautiful beaches
  • World-class golfing and fishing
  • Nationally ranked k-12 schools
  • Excellent Universities and Community College
  • Convenient Interconnecting Roadways
  • Variety of Residential Options

Nassau County boasts all of that, and so much more. In conjunction with our many partners, the NCIDA is committed to fostering an environment where businesses can thrive and expand — and where our fellow residents are proud to live, employees enjoy to work and children love to play.

Map of Nassau County

Explore Nassau County

An interactive map of Nassau County to help you navigate our neighborhoods, roads and highways, parks, schools, and more. 

COVID-19 resources

Find information on vaccinations, testing and programs to mitigate the effects of COVID-19 on our local economy.

Key industries

Learn about our diverse economy and workforce, and why Nassau County is the premier location for several major industry clusters.

Doing business here

Nassau County offers incomparable opportunities for businesses of all sizes and industries to thrive.

Living here

Nassau County offers residents the best of all things for living, working and playing.

Work with us

The NCIDA is always looking for qualified service providers and from time to time, may issue request for qualifications for various services.

View Solicitations and RFQ's

Upcoming Events

NCIDA Board Meeting

Thursday, February 2, 2023 - 6:45 PM EST

Event details

NCIDA Board Meeting

Thursday, February 23, 2023 - 6:45 PM EST

Event details

Latest News

Newsday: Finance Consultant to lead the Nassau IDA

November 29, 2022

Read Article

News 12: Nassau IDA votes to end property tax agreement with Amazon over lack of new jobs at Syosset warehouse

August 15, 2022

Read Article