Denning is a town in Ulster County, New York, home to about 587 people across 106 square miles. It has no ZIP code of its own: it’s part of 12410, 12458, 12725 and 12740.
Homes sold for a median of $274 per square foot across 4 ZIP codes in the three months ending August 2026, and 0 of 4 were seller’s markets.
Mostly Shandaken; part is in Denning
Mostly Wawarsing; part is in Denning
Mostly Neversink; part is in Denning
Mostly Neversink; part is in Denning
Each card is that ZIP code’s whole market, including any part outside Denning. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Denning’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Albany International Airport (ALB)67 miles away |
|---|---|
| Closer regional airport | New York Stewart International Airport (SWF)36 miles away |
| Nearest city of 250,000+ | Newark, NJ85 miles away |
| Nearest city of 1 million+ | New York, NY93 miles away |
Straight-line distances from the center of Denning; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Denning had 493 residents in the 2020 census, down 4% since 2000.
It’s the 958th largest of 1,007 towns in New York by population.
Ulster County grew from 88,422 residents in 1900 to 181,851 in 2020.
Ulster County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 74°F in summer, and winter lows average 12°F. About 63.2 inches of rain and melted snow fall in a typical year, with about 105 inches of snow.
Source: NOAA 1991–2020 climate normals, Slide Mtn, NY weather station (8 miles away).
44,452 jobs at 5,065 businesses in Ulster County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
16 doctors and other health care providers list an office in Denning’s ZIP codes.
Nearest hospitals
Providers with an office here
| Specialist doctors | 2 |
|---|---|
| Nurse practitioners and physician assistants | 5 |
| Mental health providers | 5 |
| Physical and occupational therapists | 4 |
| Pharmacies | 2 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Museums (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 6.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Tri-Valley Central School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Tri-Valley Elementary SchoolGrahamsville | Pre-K–6 | 471 | Public | 5.8 mi |
| Tri-Valley Secondary SchoolGrahamsville | 7–12 | 408 | Public | 5.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Wawarsing, Neversink, Shandaken, Rochester Town and Hardenburgh.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.