Demographics of Onondaga County, New York

Onondaga County, New York had 466,584 people on July 1, 2025, by the Census Bureau’s estimate: −8,845 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Onondaga County, in four figures

466,584
Population: July 1, 2025, Vintage 2025 estimate.; −1.9%
Change since July 2020: −8,845 people.; 39.6 ±0.2
Median age: ACS 2020–⁠2024.; $76,945 ±$1,228
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Onondaga County, New York's population shrank 1.9% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Onondaga County, New York's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Onondaga County, New York's population shrank 1.9% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Onondaga County, New York's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	475,429	100.0	100.0
2021	471,829	99.2	100.2
2022	469,910	98.8	100.7
2023	468,524	98.5	101.6
2024	468,173	98.5	102.5
2025	466,584	98.1	103.1

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Population of Onondaga County, New York on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	475,429	−1,084	−61	+4	−1,003
2021	471,829	−3,600	−381	+507	−3,816
2022	469,910	−1,919	−299	+1,307	−2,680
2023	468,524	−1,386	−213	+1,843	−2,984
2024	468,173	−351	−175	+2,139	−2,284
2025	466,584	−1,589	−140	+1,442	−2,901

Age, 2020–2024

The median age is 39.6 ±0.2: for men 38.5 ±0.3 and for women 40.6 ±0.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Onondaga County by age, ACS 2020–2024
Age	People	Share	New York	United States
Under 5	25,388 ±24	5.4% ±<0.1	5.4% ±<0.1	5.6% ±<0.1
5 to 17	73,166 ±1,349	15.5% ±0.3	15.0% ±<0.1	16.3% ±<0.1
18 to 24	47,444 ±1,165	10.1% ±0.2	8.9% ±<0.1	9.1% ±<0.1
25 to 44	119,197 ±1,262	25.3% ±0.3	27.1% ±<0.1	26.9% ±<0.1
45 to 64	117,948 ±1,555	25.0% ±0.3	25.6% ±0.1	24.8% ±<0.1
65 and over	87,986 ±1,573	18.7% ±0.3	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $76,945 ±$1,228, and income per person $43,166 ±$662, in 2024 dollars. The median is $85,974 ±$402 in New York and $80,734 ±$166 in the United States.

Households by income

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Households in Onondaga County by income, ACS 2020–2024
Household income	Households	Share	New York	United States
Under $25,000	31,781 ±1,439	16.1% ±0.7	16.0% ±0.1	14.6% ±<0.1
$25,000 to $49,999	33,909 ±1,478	17.1% ±0.7	15.1% ±0.1	16.7% ±<0.1
$50,000 to $74,999	30,714 ±1,282	15.5% ±0.6	13.6% ±0.1	15.5% ±<0.1
$75,000 to $99,999	26,032 ±1,296	13.2% ±0.7	11.4% ±0.1	12.6% ±<0.1
$100,000 to $149,999	35,159 ±1,346	17.8% ±0.7	16.7% ±0.1	17.5% ±<0.1
$150,000 to $199,999	19,063 ±881	9.6% ±0.4	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	21,102 ±965	10.7% ±0.5	17.1% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Onondaga County by age, ACS 2020–2024
Age	Below poverty	Rate	New York	United States
All ages	62,038 ±2,357	13.8% ±0.5	14.0% ±0.2	12.5% ±0.1
Under 18	19,942 ±1,234	20.6% ±1.2	18.3% ±0.2	16.1% ±0.1
18 to 59	29,772 ±1,435	12.7% ±0.6	12.8% ±0.1	11.6% ±0.1
60 and over	12,324 ±834	10.4% ±0.7	13.1% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Onondaga County, ACS 2020–2024
Measure	Onondaga County	New York	United States
Housing units	212,002 ±356	8,585,241 ±652	143,775,355 ±10,234
Occupied	93.3% ±0.5	90.0% ±0.1	89.9% ±0.1
Vacant	6.7% ±0.4	10.0% ±0.1	10.1% ±0.1
Owner occupied	65.9% ±0.7	54.3% ±0.2	65.2% ±0.3
Renter occupied	34.1% ±0.8	45.7% ±0.1	34.8% ±0.1
Median home value	$200,200 ±$3,012	$423,800 ±$1,627	$332,700 ±$236
Median gross rent	$1,108 ±$12	$1,621 ±$7	$1,413 ±$2
Median year built	1964 ±1	1959 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Onondaga County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	New York	United States
Hispanic or Latino	27,930 ±0	5.9% ±<0.1	19.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	347,603 ±892	73.8% ±0.2	52.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	48,051 ±1,373	10.2% ±0.3	13.4% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	19,309 ±474	4.1% ±0.1	9.0% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	1,541 ±220	0.3% ±<0.1	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	51 to 155	< 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	2,185 ±580	0.5% ±0.1	1.0% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	24,407 ±1,771	5.2% ±0.4	3.8% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Onondaga County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	New York	United States
Born in the state	353,732 ±2,917	75.1% ±0.6	62.4% ±0.1	57.3% ±<0.1
Born in another state	72,665 ±2,393	15.4% ±0.5	12.3% ±0.1	26.9% ±<0.1
Born a citizen outside the states	7,568 ±825	1.6% ±0.2	2.5% ±<0.1	1.7% ±<0.1
Born abroad	37,164 ±1,868	7.9% ±0.4	22.8% ±0.1	14.1% ±<0.1
Naturalized citizens	20,609 ±1,110	4.4% ±0.2	13.6% ±0.1	7.4% ±<0.1
Not citizens	16,555 ±1,323	3.5% ±0.3	9.2% ±0.1	6.8% ±<0.1

Onondaga County among the counties of New York

11th of 62 by population, July 2025. Every one is listed on the New York page.

Counties of New York near Onondaga County in population, July 2025
County	July 2025	Change since 2020
Nassau County	1,398,939	+0.6%
Westchester County	1,015,743	+1.4%
Erie County	946,741	−0.6%
Monroe County	750,506	−1.0%
Richmond County	501,290	+1.2%
Onondaga County	466,584	−1.9%
Orange County	417,669	+4.2%
Rockland County	357,397	+5.9%
Albany County	321,225	+2.2%
Dutchess County	300,708	+1.5%
Saratoga County	241,343	+2.3%

Elsewhere on the site

Rankings this appears in

No. 11 Counties by population in New York
No. 46 Counties by population growth in New York

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — counties and Puerto Rico municipios, with components of change and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026