2026 Property Tax Due Dates
Varies by locality
First installment
Varies by locality
Second installment
Payment Methods
Online, Mail, In-Person
Nassau County Treasurer
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Nassau County Treasurer
In Person
Visit the Treasurer's office — 240 Old Country Rd, Mineola NY 11501, Mon-Fri 9am - 4:45pm
Other Counties in New York
About Nassau County
Nassau County ( NASS-aw) is a suburban county located on Long Island, immediately to the east of New York City, bordering the Long Island Sound on the north and the open Atlantic Ocean to the south. As of the 2020 United States census, Nassau County's population was 1,395,774, making it the sixth-most populous county in the State of New York & 29th in the nation , reflecting an increase of 56,242 (+4.2%) from the 1,339,532 residents enumerated at the 2010 census.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you 2 weeks before your property taxes are due.
Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.