The Town Files

Sempronius, New York

Town in Cayuga County · population 840 (2020 Census)

Map: where Sempronius is in New YorkSempronius
Median home
$154,200
Household income
$70,000
Jan low / Jul high
11° / 77°
Snow a year
91 in
Tornadoes ≤10 mi since 1950
1
Median age
41.8

Sempronius is a town of 840 people in Cayuga County, New York. The median home is worth $154,200, below the typical New York town ($217,700). It ranks easier by car than 89% of New York towns, quieter than 74% of New York towns.

How Sempronius ranks

Percentile among New York towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of New York towns.

Sempronius lifestyle rankings vs other New York townsRetirement32nd pctFamilies44th pctQuiet74th pctWalkability20th pctFirst-time buyersbottomYoung professionals26th pctVibrancy8th pctHip & trendy16th pctCollege town31st pctUpscale25th pctVacation homesbottomSeaside characterbottomCyclingbottomTransit36th pctDriving89th pcttypical
The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025).

Homes and cost of living

The median home in Sempronius is worth $154,200, below the typical New York town ($217,700). Homes cost about 2.2 times the median household income of $70,000, which is more affordable than 76% of New York towns. Median rent is $950 a month. 92.1% of households own their home.

Sempronius vs Cayuga County vs typical New York townSemproniusCayuga CountyTypical New York townHome value$154,200$171,000$217,700Household income$70,000$67,904$80,740Monthly rent$950$942$1,080
Census ACS 5-year estimates, 2020–2024. "Typical town" = median of New York towns with 500+ people.
HousingSemproniusTypical New York town
Median home value$154,200$217,700
Median rent$950$1,080
Median household income$70,000$80,740
Home value ÷ income2.2×2.8×
Homeownership92.1%79.5%
Median year built19741965
Seasonal / vacation homes10.9%—

Who lives in Sempronius

PeopleSemproniusTypical New York town
Median age41.843.5
Age 65 and over19.6%20.4%
Under 1822.8%—
Bachelor's degree or higher16.1%30.4%
Below the poverty line10.6%9.3%
Veterans9.2%—
Born outside the U.S.0.9%—
Work from home5.8%11.1%
Average commute29.3 min26.0 min
Homes with broadband87.4%91.1%

Weather in Sempronius

July highs average 77.3°F and January lows 11.4°F. About 48.5 inches of rain and melted snow fall a year, with 90.7 inches of snow (typical New York town: 62.9 in). Expect about 1 days a year at 90°F or hotter and 164 nights at or below freezing.

Sempronius monthly temperatures and precipitation10°20°30°40°50°60°70°80°32° freezing29°11°Jan31°12°Feb39°20°Mar52°31°Apr65°43°May73°52°Jun77°57°Jul76°55°Aug69°48°Sep57°38°Oct45°28°Nov34°18°DecPrecipitation (in) · snow (in) in blue2.919.82.920.73.619.24.24.33.60.25.14.64.84.84.50.63.98.13.617.8
NOAA 1991–2020 climate normals: average daily high and low by month; precipitation and snowfall in inches. Temperatures from the Tully Heiberg Forest station (12.6 mi away); snowfall estimated from the 4 nearest snow stations, weighted by distance.

Tornadoes, storms and disasters

1 tornado has passed within 10 miles of Sempronius since 1950, compared with 5 for the typical New York town. The strongest, an F0, struck on April 18, 2004 about 8.1 miles from the town center. The most recent was on April 18, 2004.

Tornadoes within 10 miles of Sempronius by decade01950s01960s01970s01980s01990s12000s02010s02020s
NOAA Storm Events Database, tornado tracks (start to end point) passing within 10 miles of the town center, 1950–2026.

Hail of 1 inch or larger has been reported within 10 miles 16 times; the largest was 2.00 inches on June 9, 2011.

Severe weather in Cayuga County since 1996

Storm events in Cayuga County since 1996 by typeHail88Flood13Drought9High Wind59Lightning9Heavy Snow97Flash Flood46Frost/Freeze17
NOAA Storm Events Database, Cayuga County, 1996–2026 (all event types recorded since 1996). 5 deaths recorded.

Cayuga County has been included in 19 federal disaster or emergency declarations since 1953, most often for fire, flood, other.

DeclaredIncidentDeclaration
October 8, 2021HurricaneDR-4625: Remnants Of Tropical Storm Fred
March 20, 2020BiologicalDR-4480: Covid-19 Pandemic
March 13, 2020BiologicalEM-3434: Covid-19
November 14, 2017FloodDR-4348: Flooding
October 28, 2012HurricaneEM-3351: Hurricane Sandy

Jobs and pay in Cayuga County

Cayuga County had 24,605 jobs in 2024, paying an average of $62,623 a year. Unemployment was 3.6% in 2023; in Sempronius itself the ACS puts it at 3%.

Largest industries in Cayuga CountyHealth care & social assistan…3,776 jobs · $62,460Manufacturing3,220 jobs · $70,567Retail2,989 jobs · $36,530Hotels & restaurants2,034 jobs · $25,897Construction1,176 jobs · $83,576Wholesale trade841 jobs · $94,341
BLS Quarterly Census of Employment and Wages, 2024, private-sector jobs and average annual pay.
Unemployment rate in Cayuga County, 2000–20230%2%4%6%8%10%2000200420082012201620202023Cayuga 3.6%
Annual average unemployment rate (BLS Local Area Unemployment Statistics via USDA ERS).

Towns near Sempronius

Sempronius questions

Is Sempronius, New York a good place to retire?

On The Town Files lifestyle rankings, Sempronius scores better for retirees than 32% of New York towns and quieter than 74%. 19.6% of residents are 65 or older (median age 41.8).

How much does a house cost in Sempronius?

The median owner-occupied home in Sempronius is valued at $154,200 (Census ACS 2020–2024), against a median household income of $70,000, so homes cost about 2.2 times income. Median rent is $950 a month.

What is the weather like in Sempronius?

July highs average 77.3°F and January lows 11.4°F (NOAA 1991–2020 normals). It gets about 48.5 inches of precipitation a year and 90.7 inches of snow.

Does Sempronius get tornadoes?

1 tornado has passed within 10 miles of Sempronius since 1950 (NOAA Storm Events); the strongest was a F0 on April 18, 2004. The typical New York town has had 5.

How this page is made. Every number comes from public data, matched to Sempronius's Census boundary (GEOID 3601166278). Comparisons use the median of New York towns with at least 500 people. Weather comes from the nearest NOAA normals station; storm counts use NOAA tornado tracks within 10 miles of the town center. Data snapshot 2026-11-13.