Demographics of Niagara County, New York

Niagara County, New York had 208,912 people on July 1, 2025, by the Census Bureau’s estimate: −3,206 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.

Niagara County, in four figures

208,912
Population: July 1, 2025, Vintage 2025 estimate.; −1.5%
Change since July 2020: −3,206 people.; 43.3 ±0.3
Median age: ACS 2020–⁠2024.; $69,633 ±$2,124
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.

Niagara County, New York's population shrank 1.5% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Niagara 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).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Niagara County, New York's population shrank 1.5% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Niagara 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	212,118	100.0	100.0
2021	211,778	99.8	100.2
2022	210,403	99.2	100.7
2023	209,451	98.7	101.6
2024	209,380	98.7	102.5
2025	208,912	98.5	103.1

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Population of Niagara 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	212,118	−553	−258	0	−305
2021	211,778	−340	−920	+64	+305
2022	210,403	−1,375	−969	+171	−451
2023	209,451	−952	−795	+308	−418
2024	209,380	−71	−670	+399	+235
2025	208,912	−468	−682	+264	−65

Age, 2020–2024

The median age is 43.3 ±0.3: for men 42.0 ±0.4 and for women 44.4 ±0.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Niagara County by age, ACS 2020–2024
Age	People	Share	New York	United States
Under 5	10,503 ±161	5.0% ±0.1	5.4% ±<0.1	5.6% ±<0.1
5 to 17	31,347 ±917	14.9% ±0.4	15.0% ±<0.1	16.3% ±<0.1
18 to 24	16,473 ±781	7.8% ±0.4	8.9% ±<0.1	9.1% ±<0.1
25 to 44	51,335 ±1,022	24.4% ±0.5	27.1% ±<0.1	26.9% ±<0.1
45 to 64	57,375 ±1,207	27.2% ±0.6	25.6% ±0.1	24.8% ±<0.1
65 and over	43,688 ±1,175	20.7% ±0.6	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $69,633 ±$2,124, and income per person $38,904 ±$815, 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 Niagara County by income, ACS 2020–2024
Household income	Households	Share	New York	United States
Under $25,000	15,746 ±1,039	17.1% ±1.1	16.0% ±0.1	14.6% ±<0.1
$25,000 to $49,999	18,079 ±979	19.7% ±1.1	15.1% ±0.1	16.7% ±<0.1
$50,000 to $74,999	15,140 ±979	16.5% ±1.1	13.6% ±0.1	15.5% ±<0.1
$75,000 to $99,999	13,306 ±841	14.5% ±0.9	11.4% ±0.1	12.6% ±<0.1
$100,000 to $149,999	14,637 ±896	15.9% ±1.0	16.7% ±0.1	17.5% ±<0.1
$150,000 to $199,999	7,783 ±774	8.5% ±0.8	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	7,193 ±618	7.8% ±0.7	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 Niagara County by age, ACS 2020–2024
Age	Below poverty	Rate	New York	United States
All ages	28,014 ±2,039	13.5% ±1.0	14.0% ±0.2	12.5% ±0.1
Under 18	8,012 ±793	19.4% ±1.8	18.3% ±0.2	16.1% ±0.1
18 to 59	13,731 ±1,116	12.9% ±1.0	12.8% ±0.1	11.6% ±0.1
60 and over	6,271 ±619	10.6% ±1.0	13.1% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Niagara County, ACS 2020–2024
Measure	Niagara County	New York	United States
Housing units	100,446 ±96	8,585,241 ±652	143,775,355 ±10,234
Occupied	91.5% ±0.7	90.0% ±0.1	89.9% ±0.1
Vacant	8.5% ±0.7	10.0% ±0.1	10.1% ±0.1
Owner occupied	71.2% ±0.8	54.3% ±0.2	65.2% ±0.3
Renter occupied	28.8% ±1.0	45.7% ±0.1	34.8% ±0.1
Median home value	$189,800 ±$4,741	$423,800 ±$1,627	$332,700 ±$236
Median gross rent	$899 ±$20	$1,621 ±$7	$1,413 ±$2
Median year built	1958 ±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 Niagara County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	New York	United States
Hispanic or Latino	8,459 ±0	4.0% ±<0.1	19.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	173,008 ±672	82.1% ±0.3	52.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	13,322 ±774	6.3% ±0.4	13.4% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	2,465 ±235	1.2% ±0.1	9.0% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	1,050 ±150	0.5% ±0.1	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 32	0% to < 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	954 ±359	0.5% ±0.2	1.0% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	11,451 ±953	5.4% ±0.5	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 Niagara County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	New York	United States
Born in the state	177,188 ±1,545	84.1% ±0.7	62.4% ±0.1	57.3% ±<0.1
Born in another state	21,794 ±1,148	10.3% ±0.5	12.3% ±0.1	26.9% ±<0.1
Born a citizen outside the states	2,400 ±468	1.1% ±0.2	2.5% ±<0.1	1.7% ±<0.1
Born abroad	9,339 ±983	4.4% ±0.5	22.8% ±0.1	14.1% ±<0.1
Naturalized citizens	5,345 ±592	2.5% ±0.3	13.6% ±0.1	7.4% ±<0.1
Not citizens	3,994 ±724	1.9% ±0.3	9.2% ±0.1	6.8% ±<0.1

Niagara County among the counties of New York

18th of 62 by population, July 2025. Every one is listed on the New York page.

Counties of New York near Niagara County in population, July 2025
County	July 2025	Change since 2020
Rockland County	357,397	+5.9%
Albany County	321,225	+2.2%
Dutchess County	300,708	+1.5%
Saratoga County	241,343	+2.3%
Oneida County	226,392	−2.1%
Niagara County	208,912	−1.5%
Broome County	195,736	−1.2%
Ulster County	183,330	+1.1%
Schenectady County	162,581	+3.0%
Rensselaer County	160,510	−0.2%
Chautauqua County	124,126	−2.6%

Elsewhere on the site

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

Data retrieved September 25, 2026