PLEASE BE ADVISED: The Town of Denning Town Clerk will be out on Medical Leave beginning Thursday, September 18, 2025 and returning Monday October 6, 2025.
TOWN HALL WILL BE OPEN DURING REGULAR BUSINESS HOURS BUT WITH LIMITED SERVICES. Please call 845-985-2411 before coming in to be sure your business can be addressed. There will be no Notary Public on site during this time. We apologize for any inconvenience this may cause.
Resident News

NYS Tax Department: Tax Tips for Property Owners—When to expect your STAR credit

Are you expecting a STAR credit check or direct deposit from New York State?

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Safe Disposal of Household Hazardous Waste

Hosted by Ulster County Resource Recovery Agency Download flyer (PDF)

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COMPTROLLER’S TOWN HALL

6 PM, Tuesday, July 29, 2025, at the Claryville Firehouse 1500 Denning Road, Claryville, NY 12725 Ulster County Comptroller March Gallagher invites you to this in-person, public meeting***.  Learn about: Ulster County […]

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Denning, NY

Town of Denning, located in Ulster County NY, is comprised of three distinct areas. The valley of the West Branch of the Neversink River, now referred to as Frost Valley and Round Pond areas. The East Branch of the Neversink River known as the Denning Valley included the hamlets of Denning, Ladleton, Red Hill, and Dewittville. The Sundown Area included hamlets of Sundown, Peekamoose, Bull Run, Dymond City, Greenville, and Yeagerville.

These areas were part of a tract given by the English Queen Anne to one Johannes Hardenberg in 1708. The Hardenberg Patent was surveyed in 1749 and divided into lots. Denning covers parts of great lots 6 and 7 which were further divided into lots which were sold to investors and called tracts. William Denning eventually purchased 19,169 acres when a Philadelphia land grant corporation failed to pay taxes. After Denning’s death William H. Denning purchased some 24,000 acres which were again surveyed and divided into lots and sold.

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