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Guide to the Office of the County Clerk

Filing Business Names & Corporations in Nassau County

Notary Public Guide

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Historical Guide to Nassau County

Students Resource Guide to Nassau County

Caring For Our American Flag

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  1. Maureen OConnell

    Maureen O'Connell

    County Clerk

    Alert: Child Victim Act Procedures (PDF)

    Sandy Refund Application (PDF)

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News Flash

  1. ATTENTION SENIORS: FREE FLU SHOTS

    Nassau County Clerk Maureen O’Connell & Northwell Health are pleased to announce free flu shots for senior citizens in the community. This year’s program will be held on Tues, Oct 7, 2025 from 9am to 1pm at American Legion Post No. 144 in Williston Park. Read on...
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