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Treasurer Staff

County Treasurer

Please be aware the Treasurer's Office is currently closed to public walk-ins. Phone calls, emails and mailings continue to be accepted, however, and there is a dropbox available at the entrance to the Government Center.  You may also mail payments to: Sullivan County Treasurer, 100 North Street, PO Box 5012, Monticello, NY 12701. 

** As of June 1, 2020, there has been no extension granted for the payment of taxes.  It is best that you mail your payments and have the same postmarked by the USPS to ensure the same are timely.  Check this website regularly for any updates. **



Useful Links:


Sullivan County Imagemate
Provides in-depth information on Sullivan County properties, including assessment information and tax maps.