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Office of the Nassau County Clerk
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The Nassau County Clerk's Office is located at 240 Old Country Road, Mineola. We are the blue building on the corner of Old Country Road and County Seat Drive. The Clerk's Office is open Monday, Wednesday, Thursday, and Friday from 9am to 4:30pm and Tuesday from 9am to 7pm. To be sure that you have sufficient time to complete your business with the Clerk’s Office, please try to arrive no later than 4pm as we are unable to research or process any transactions after 4:15pm. The office is closed on the following official 2014 County holidays, in accordance with the Civil Service Employee's Association/Nassau County Collective Bargaining Agreement:

Holiday Closings  2014