Sempronius is a town in Cayuga County, New York, home to about 789 people across 29 square miles. It has no ZIP code of its own: it’s part of 13118.
Homes sold for a median of $133 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Moravia; part is in Sempronius
Each card is that ZIP code’s whole market, including any part outside Sempronius. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Sempronius’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Syracuse Hancock International Airport (SYR)30 miles away |
|---|---|
| Closer regional airport | Ithaca Tompkins Regional Airport (ITH)17 miles away |
| Nearest city of 250,000+ | Buffalo, NY125 miles away |
| Nearest city of 1 million+ | New York, NY191 miles away |
Straight-line distances from the center of Sempronius; 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.
Sempronius had 840 residents in the 2020 census, down 6% since 2000.
It’s the 921st largest of 1,007 towns in New York by population.
Cayuga County grew from 66,234 residents in 1900 to 76,248 in 2020.
Cayuga County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 80°F in summer, and winter lows average 17°F. About 37.1 inches of rain and melted snow fall in a typical year, with about 56 inches of snow.
Source: NOAA 1991–2020 climate normals, Aurora Rsch Farm, NY weather station (13 miles away).
17,820 jobs at 1,509 businesses in Cayuga 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 Sempronius.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Dentists | 2 |
| Nurse practitioners and physician assistants | 4 |
| Mental health providers | 2 |
| Physical and occupational therapists | 5 |
| Chiropractors | 1 |
| Pharmacies | 1 |
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.
Parks (2 nearby)
Grocery stores (1 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Counts are within about 3.5 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 Moravia Central School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Millard Fillmore Elementary SchoolMoravia | Pre-K–5 | 408 | Public | 2.4 mi |
| Moravia Junior-Senior High SchoolMoravia | 6–12 | 442 | Public | 2.2 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 Moravia, Niles, Scipio, Venice and Summerhill.
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.