Demographics of Lewis County, New York

Lewis County, New York had 26,479 people on July 1, 2025, by the Census Bureau’s estimate: −92 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.

Lewis County, in four figures

26,479
Population: July 1, 2025, Vintage 2025 estimate.; −0.3%
Change since July 2020: −92 people.; 41.9 ±0.4
Median age: ACS 2020–⁠2024.; $68,182 ±$3,903
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.

Lewis County, New York's population shrank 0.3% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Lewis 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

Lewis County, New York's population shrank 0.3% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Lewis 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	26,571	100.0	100.0
2021	26,739	100.6	100.2
2022	26,616	100.2	100.7
2023	26,568	100.0	101.6
2024	26,512	99.8	102.5
2025	26,479	99.7	103.1

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Population of Lewis 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	26,571	−24	+9	0	−35
2021	26,739	+168	+30	+2	+117
2022	26,616	−123	−5	+9	−116
2023	26,568	−48	−4	+6	−45
2024	26,512	−56	−23	+15	−46
2025	26,479	−33	−26	+8	−17

Age, 2020–2024

The median age is 41.9 ±0.4: for men 42.0 ±0.5 and for women 41.8 ±0.7. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Lewis County by age, ACS 2020–2024
Age	People	Share	New York	United States
Under 5	1,539 ±45	5.8% ±0.2	5.4% ±<0.1	5.6% ±<0.1
5 to 17	4,480 ±180	16.8% ±0.7	15.0% ±<0.1	16.3% ±<0.1
18 to 24	1,994 ±167	7.5% ±0.6	8.9% ±<0.1	9.1% ±<0.1
25 to 44	6,100 ±226	22.9% ±0.8	27.1% ±<0.1	26.9% ±<0.1
45 to 64	7,028 ±254	26.4% ±1.0	25.6% ±0.1	24.8% ±<0.1
65 and over	5,466 ±284	20.5% ±1.1	17.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $68,182 ±$3,903, and income per person $33,677 ±$1,122, 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 Lewis County by income, ACS 2020–2024
Household income	Households	Share	New York	United States
Under $25,000	1,657 ±191	14.9% ±1.7	16.0% ±0.1	14.6% ±<0.1
$25,000 to $49,999	2,330 ±236	21.0% ±2.1	15.1% ±0.1	16.7% ±<0.1
$50,000 to $74,999	2,115 ±241	19.0% ±2.1	13.6% ±0.1	15.5% ±<0.1
$75,000 to $99,999	1,751 ±236	15.8% ±2.1	11.4% ±0.1	12.6% ±<0.1
$100,000 to $149,999	2,097 ±207	18.9% ±1.8	16.7% ±0.1	17.5% ±<0.1
$150,000 to $199,999	637 ±102	5.7% ±0.9	10.1% ±0.1	9.6% ±<0.1
$200,000 or more	523 ±122	4.7% ±1.1	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 Lewis County by age, ACS 2020–2024
Age	Below poverty	Rate	New York	United States
All ages	3,254 ±379	12.3% ±1.4	14.0% ±0.2	12.5% ±0.1
Under 18	1,007 ±159	16.9% ±2.6	18.3% ±0.2	16.1% ±0.1
18 to 59	1,439 ±222	11.3% ±1.7	12.8% ±0.1	11.6% ±0.1
60 and over	808 ±140	10.5% ±1.8	13.1% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Lewis County, ACS 2020–2024
Measure	Lewis County	New York	United States
Housing units	15,637 ±55	8,585,241 ±652	143,775,355 ±10,234
Occupied	71.0% ±1.7	90.0% ±0.1	89.9% ±0.1
Vacant	29.0% ±1.6	10.0% ±0.1	10.1% ±0.1
Owner occupied	80.2% ±1.6	54.3% ±0.2	65.2% ±0.3
Renter occupied	19.8% ±1.7	45.7% ±0.1	34.8% ±0.1
Median home value	$166,100 ±$5,193	$423,800 ±$1,627	$332,700 ±$236
Median gross rent	$837 ±$57	$1,621 ±$7	$1,413 ±$2
Median year built	1972 ±2	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 Lewis County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	New York	United States
Hispanic or Latino	480 ±0	1.8% ±<0.1	19.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	24,862 ±248	93.4% ±0.9	52.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	193 ±91	0.7% ±0.3	13.4% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	78 ±35	0.3% ±0.1	9.0% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 16	0% to 0.1%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 25	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	46 to 242	0.2% to 0.9%	1.0% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	842 ±240	3.2% ±0.9	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 Lewis County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	New York	United States
Born in the state	22,876 ±360	86.0% ±1.4	62.4% ±0.1	57.3% ±<0.1
Born in another state	3,245 ±325	12.2% ±1.2	12.3% ±0.1	26.9% ±<0.1
Born a citizen outside the states	123 ±54	0.5% ±0.2	2.5% ±<0.1	1.7% ±<0.1
Born abroad	363 ±124	1.4% ±0.5	22.8% ±0.1	14.1% ±<0.1
Naturalized citizens	191 ±62	0.7% ±0.2	13.6% ±0.1	7.4% ±<0.1
Not citizens	60 to 284	0.2% to 1.1%	9.2% ±0.1	6.8% ±<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%.

Lewis County among the counties of New York

59th of 62 by population, July 2025. Every one is listed on the New York page.

Counties of New York near Lewis County in population, July 2025
County	July 2025	Change since 2020
Orleans County	39,825	−0.6%
Wyoming County	39,741	−1.3%
Essex County	36,438	−2.2%
Seneca County	32,883	−1.7%
Schoharie County	30,176	+1.4%
Lewis County	26,479	−0.3%
Yates County	24,547	−0.8%
Schuyler County	16,924	−5.3%
Hamilton County	5,006	−1.3%

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