911 Addressing

The 911 Addressing center is located, and managed, within the Sullivan County Real Property Services Department. 911 Addressing works closely with Real Property Services, the 911 Emergency Control Center, and local communication vendors to develop, maintain, and improve the countywide addressing system to ensure rapid emergency response to the people of Sullivan County. Your safety is our primary concern. Day-to-day operations include 911 address assignment, verification, and discrepancy resolution.

Most visitors to the 911 Addressing webpage can answer their questions using the Address Verification App below. Additional services are as follows:

• Address Assignment
  • Apply for a 911 Address for a new structure
  • Apply for a 911 Address for an existing building
  • Apply for 911 Addresses for a private community
  • Apply for a 911 Address for a non-structural or public gathering site
• Ask a Question or Request an Address Verification
  • Request an Address Verification Letter
  • Ask an Address Question
• Road Name Approval
  • Name or re-name your private road

View your address in the Sullivan County Parcel Viewer using a new browser window

Contact us:
Sullivan County Gov't Center
Real Property Services
100 North St
Monticello, NY 12701
Phone: (845) 807-0221
Email: 911 Addressing Center