Cayuga County > Sempronius (town)
Population trend for Sempronius
01,0001990: 80280219902000: 89389320002010: 89589520102020: 84084020202023: 8058052023
U.S. Census Bureau ACS, IPUMS

Sempronius is a town in Cayuga County, in the Central region.

2023 Median income for Cayuga County communities
American Community Survey, 2023
2000
Cayuga County home price index (FHFA)
1979–2024: Home prices rose about 457%.

272 160 49 1979 2024

The numbers at left represent an index, not dollar prices. The index is set to 100 in the year 2000.

Federal Reserve Bank of St. Louis (FRED)
Occupied housing units in Sempronius
American Community Survey, 2023
Household types in Sempronius
Married-couple families: 147 (68.7%) Married-couple families Male householder (no spouse): 34 (15.9%) Male householder (no spouse) Female householder (no spouse): 33 (15.4%) Female householder (no spouse) Householder living alone: 72 (80.0%) Householder living alone Householder not living alone: 18 (20.0%) Householder not living alone Family Nonfamily
ACS, 2023
Poverty rates by age group in Sempronius

Pct 5 and under 2% Pct 6 to 17 12% Pct 18 to 64 9% Pct 65 and over 14%

The overall poverty rate in Sempronius is 8 percent.
The highest rate is found among residents ages 65 and over.
Year: 2023

ACS, 2023

Where residents of Sempronius lived in the prior year

Same house: 778 (97.1%) Same county (different house): 16 (2%) 801 current residents Same house: 778 (97.1%) Same house Same county (different house): 16 (2%) Same county (different house) Different NY county: 4 (0.5%) Different NY county (under 1%) Different state: 3 (0.4%) Different state (under 1%)
U.S. Census ACS, 2023
Median age of Sempronius residents
35.2 40.8 47.4 45.8 2010 2015 2020 2023


The margin of error can be high in 2023 estimates, particularly for small towns and villages.

Changes in median age can also indicate a shift in the number of school-age children; see the Education page for enrollment trends.

U.S. Census Bureau