County · New York

Seneca County, New York

Seneca County, New York. Seneca County had 32,883 residents in 2025 by the Census Bureau's estimate, down 2.8% since 2020, a steeper fall than New York's (−1.0%). It holds 17 places (5 cities, villages and boroughs, 10 towns and townships and 2 census-designated) and 11 census tracts. GEOID 36099.

Seneca County is the county of the Seneca Falls, NY micropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

32,883

Census Bureau estimate (no margin published)
2020 Census count: 33,814 · ACS 2020-2024: 32,920

Median household income

$68,089

±$2,709 (90% margin)
New York: $85,974

Median home value

$155,400

±$6,917 (90% margin)
New York: $423,800

Median gross rent

$957

±$29 (90% margin)
New York: $1,621

How many people live in Seneca County, and is it growing?

The 2020 Census counted 33,814 residents in Seneca County. The Census Bureau estimates 32,883 for July 1, 2025, down 2.8% since 2020, a steeper fall than New York's (−1.0%). The 2020-2024 American Community Survey puts the population at 32,920 over 324 square miles of land.

July 2020→2021 −208 (33,237)
2021→2022 −561 (32,676)
2022→2023 −227 (32,449)
2023→2024 +222 (32,671)
2024→2025 +212 (32,883)

Seneca County in New York. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Seneca County	New York	Change since 2015-2019
Total population	32,920	19,852,366	−1,470
Households	13,606±256	7,722,646	no clear change
Average household size	2.28±0.04	2.49	no clear change
Housing units	16,194±55	8,585,241	−167

Seneca County's population since 2000

From 33,342 in 2000 to 32,883 in 2025: down 1.4%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 33,342
2005 (estimate) 35,177
2010 Census 35,251
2015 (estimate) 34,814
2020 Census 33,814
2025 (estimate) 32,883

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Seneca County?

Seneca County holds 17 places: 5 cities, villages and boroughs (incorporated places), 10 towns and townships (county subdivisions with their own government) and 2 census-designated places. The largest is Town of Seneca Falls with 8,845 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Seneca County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Seneca Falls (town)	town	9,027	8,982±22	$62,487	$137,100	15.9%	100%
Waterloo (town)	town	7,378	7,324±29	$63,226	$117,500	10.6%	100%
Seneca Falls	CDP	6,809	6,956±303	$59,864	$123,700	15.9%	100%
Waterloo	village	4,810	4,605±231	$51,642	$114,300	11.7%	100%
Fayette (town)	town	3,657	3,607±23	$77,875	$173,900	9.8%	100%
Romulus (town)	town	3,203	3,110±19	$69,447	$178,800	18.6%	100%
Ovid (town)	town	2,847	2,094±197	$63,594	$175,700	22.8%	100%
Covert (town)	town	2,163	2,004±235	$75,688	$227,200	7.6%	100%
Varick (town)	town	1,656	1,724±223	$80,250	$267,200	17.6%	100%
Lodi (town)	town	1,482	1,825±270	$78,489	$182,600	9.4%	100%
Junius (town)	town	1,388	1,196±123	$76,750	$160,400	13.0%	100%
Tyre (town)	town	1,013	1,054±176	$63,125	$161,900	9.1%	100%
Interlaken	village	595	493±93	$59,028	$143,900	11.4%	100%
Ovid	village	534	402±112	$79,583	$121,400	8.2%	100%
RomulusGEOID 3663429	CDP	356	265±114	$45,417	$89,200	32.9%	100%
Lodi	village	254	307±70	$54,125	$114,100	9.2%	100%
Geneva	city	12,812	12,512±27	$79,435	$165,500	16.0%	0%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Seneca County?

The median resident of Seneca County is 43.0 years old; 20.3% are under 18 and 21.6% are 65 or older. The largest group is non-Hispanic white residents at 87.3%, then Hispanic or Latino residents (of any race) at 4.4%. 3.0% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Seneca County	New York	Change since 2015-2019
Median age	43.0±0.6	39.8	+0.9
Under 18 years	20.3%±0.1 pts	20.5%	–
65 years and over	21.6%±0.2 pts	17.9%	–
Hispanic or Latino (any race)	4.4%	19.8%	+0.9 pts
White alone, not Hispanic	87.3%±0.8 pts	52.8%	−1.7 pts
Black or African American alone, not Hispanic	3.5%±0.3 pts	13.4%	−1.3 pts
Asian alone, not Hispanic	0.6%±0.2 pts	9.0%	no clear change
American Indian and Alaska Native alone, not Hispanic	0.1%±0.1 pts	0.2%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.1 pts	0.0%	–
Two or more races, not Hispanic	3.5%±0.8 pts	3.8%	–
Some other race alone, not Hispanic	0.7%±0.4 pts	1.0%	–
Born outside the United States	3.0%±0.8 pts	22.8%	no clear change
Speak a language other than English at home (age 5+)	7.7%±1.2 pts	30.9%	–
Civilian veterans (age 18+)	7.7%±0.9 pts	3.7%	–
With a disability	17.1%±1.3 pts	12.6%	–
No health insurance coverage	9.0%±1.5 pts	5.1%	no clear change
High school graduate or higher (age 25+)	84.7%±1.3 pts	88.0%	–
Bachelor's degree or higher (age 25+)	25.2%±1.8 pts	40.2%	+4.1 pts
Graduate or professional degree (age 25+)	9.5%±1.0 pts	17.9%	–
Moved from another state in the past year	0.9%±0.3 pts	1.5%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Seneca County earn?

Half of Seneca County's 13,606 households earn less than $68,089 a year (±$2,709), against $85,974 in New York. In 2015-2019 it was $67,128 in 2024 dollars; the margins of error cannot tell the two periods apart. 13.5% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Seneca County	New York	Change since 2015-2019
Median household income	$68,089±$2,709	$85,974	no clear change
Mean household income	$89,874±$5,090	$128,247	–
Per capita income	$37,704±$2,031	$50,712	+$2,943
People below the poverty line	13.5%±1.7 pts	14.0%	no clear change
Children under 18 below the poverty line	17.6%±4.0 pts	18.3%	no clear change
Households receiving SNAP	12.0%±1.9 pts	15.6%	–
Households with a broadband subscription	86.4%±2.1 pts	90.8%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Seneca County?

Owners occupy 71.0% of Seneca County's occupied homes and renters 29.0%. The median owner-occupied home is valued at $155,400 by its owner (±$6,917). The median renter pays $957 a month including utilities, and 37.4% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Seneca County	New York	Change since 2015-2019
Median home value (owner-occupied)	$155,400±$6,917	$423,800	+$23,593
Median gross rent	$957±$29	$1,621	no clear change
Renters paying 35% or more of income on rent	37.4%±5.6 pts	43.1%	no clear change
Median monthly owner costs, with a mortgage	$1,418±$59	$2,555	–
Owner-occupied homes	71.0%±2.5 pts	54.3%	no clear change
Housing units	16,194±55	8,585,241	−167
Homeowner vacancy rate	0.1%±0.1 pts	1.1%	–
Rental vacancy rate	4.3%±2.2 pts	3.8%	–
Single-family detached homes	70.0%±2.4 pts	41.2%	–
Mobile homes	9.9%±1.2 pts	2.1%	–
Built 2020 or later	0.5%±0.2 pts	0.8%	–
Built 1939 or earlier	35.6%±2.3 pts	30.3%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Seneca County building?

Builders took permits for 58 new housing units across Seneca County in 2025 (54 single-family), 1.8 per 1,000 residents.

2019 48 units
2020 56 units
2021 40 units
2022 67 units
2023 46 units
2024 48 units
2025 58 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Seneca County get to work?

76.0% of Seneca County's workers drive alone and 8.6% work from home. The average trip to work takes 21.3 minutes. The unemployment rate in 2020-2024 averaged 4.5%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Seneca County	New York	Change since 2015-2019
In the labor force (age 16+)	56.2%±1.4 pts	62.7%	–
Unemployment rate	4.5%±1.0 pts	6.4%	no clear change
Drove alone to work	76.0%±2.3 pts	48.8%	–
Carpooled	9.0%±1.5 pts	6.3%	–
Public transportation	0.2%±0.1 pts	21.6%	–
Walked	3.4%±1.1 pts	5.6%	–
Worked from home	8.6%±1.6 pts	14.9%	+4.3 pts
Mean travel time to work	21.3 min±1.2	32.6 min	no clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Seneca County's census tracts?

Seneca County is divided into 11 census tracts. Among those with a reliable estimate, median household income runs from $49,527 (Tract 9505) to $77,875 (Tract 9507).

Census tracts of Seneca County, ACS 2020-2024 5-year estimates; sort by any column

Tract 950136099950100	–	2,401	2,250±218	$70,769	$160,800	$1,049	11.2%
Tract 950236099950200	Seneca Falls (71%)	2,668	2,591±211	$61,071	$144,700	$884	22.5%
Tract 950336099950300	Seneca Falls (44%)	3,465	3,551±237	$71,324	$120,900	$1,458	12.3%
Tract 950436099950400	Seneca Falls (58%)	2,894	2,840±264	$59,268	$147,700	$907	14.2%
Tract 950536099950500	Waterloo (62%)	3,683	3,547±315	$49,527	$110,100	$945	16.9%
Tract 950636099950600	Waterloo (26%)	3,695	3,777±319	$69,279	$126,200	$559	4.9%
Tract 950736099950700	Waterloo (16%)	3,657	3,607±23	$77,875	$173,900	$1,215	9.8%
Tract 9508.0136099950801	–	991	957±34	not published	not published	not published	–
Tract 9508.0236099950802	Romulus (2%)	3,868	3,877±227	$74,292	$214,900	$1,113	18.1%
Tract 950936099950900	Lodi (7%)	4,329	3,919±261	$74,231	$177,500	$747	16.6%
Tract 951036099951000	Interlaken (9%)	2,163	2,004±235	$75,688	$227,200	$1,257	7.6%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Seneca County compare with New York's other counties?

Seneca County's rank among New York's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	57th of 62
Growth 2020-2025	55th of 62
Residents per square mile	34th of 62
Median household income	45th of 62
Median home value	50th of 62
Median gross rent	34th of 62
Poverty rate	26th of 62
Bachelor's degree or higher	46th of 62
Median age	23rd of 62

Every county in New York

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Seneca County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.