Lewis County, New York Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 59th-largest in New York
The population of Lewis County, New York is 26,618 as of the 2023 American Community Survey, making it the 59th-largest county in New York. The median household income is $68,329, the median home value is $158,000, and the median age is 42.0.
The population of Lewis County has declined 1.9% since 2010 (27,072 → 26,570), a -0.13% annualized rate.
26,618
Population
-0.13%
Annual growth
21
People / sq mi
$68,329
Median Income
$158,000
Median Home Value
Lewis County covers 1,276 sq mi of land at 20.9 people per square mile.
About Lewis County, NY
Lewis County is distinguished by its share of foreign-born residents, 12.0% of the population. With 26,618 residents, Lewis County is a county in New York.
Household earnings are middling, with a median of $68,329 — below the US median of $78,538. About 8.8% of residents live below the federal poverty level, below the national 12.4%. Median home value is $158,000, with typical rent around $821.
Roughly 19.4% of adults have a bachelor’s, below the national 35.0%. Remote work is below the national 14.0% at 7.6%, and the average commute runs about 24 minutes each way.
Lewis County Population History (2010-2024)
The county of Lewis County had a population of 27,072 in 2010 and 26,570 in 2024, a -1.9% growth over 14 years. The peak was 27,190 in 2012. Average annual growth rate: -0.13%.
26,570
Population (2024)
27,072
Population (2010)
27,190
Peak (2012)
-0.13%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 27,072 |
| 2011 | 27,021 |
| 2012 | 27,190 |
| 2013 | 27,092 |
| 2014 | 27,085 |
| 2015 | 26,824 |
| 2016 | 26,656 |
| 2017 | 26,606 |
| 2018 | 26,503 |
| 2019 | 26,329 |
| 2020 | 26,557 |
| 2021 | 26,721 |
| 2022 | 26,602 |
| 2023 | 26,584 |
| 2024 | 26,570 |
Race & Ethnicity
| White | 94.3% |
| Black or African American | 0.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.6% |
| Two or More Races | 0.0% |
Age & Sex
42.0
Median Age
49.3%
Female
50.7%
Male
19.8%
Age 65+
Age Distribution
Children (under 15): 18.8% · Seniors (65+): 19.8%
Income & Poverty
| Median household income | $68,329$-16,249 vs state |
| Mean household income | $79,621 |
| Per-capita income | $32,690 |
| Poverty rate | 8.8%-1.0% vs state |
| Unemployment rate | 3.2% |
| Employment-to-population | 55.8% |
Top Industries by Employment
The largest employment sector in Lewis County is professional & business services, accounting for 26.3% of workers.
How residents commute
1.2%
Drive alone
4.6%
Carpool
75.7%
Public transit
7.6%
Work from home
24.2 min
Avg commute
Housing
$158,000$-245,000 vs state
Median home value
$821
Median rent
80.4%
Homeownership rate
15,572
Total housing units
70.4%
Occupied
29.6%
Vacant
19.6%
Renter-occupied
Social & access
95.1%
With health insurance
91.0%
With broadband internet
12.0%
Foreign-born
8.5%
Veterans (18+)
14.9%
With a disability
97.2%
Speak language other than English at home
Education
91.4%
High School+
19.4%
Bachelor's+
Largest cities in New York
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Part of New York
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County rankings
Frequently Asked Questions
Lewis County, New York has a population of 26,618 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 59th-largest county in New York. Population density is 21 people per square mile.
The population of Lewis County has declined 1.9% since 2010 (27,072 → 26,570), a -0.13% annualized rate.
The median household income in Lewis County, New York is $68,329, with mean (average) household income of $79,621 and per-capita income of $32,690. 8.8% of residents live below the federal poverty level.
In Lewis County, the largest racial and ethnic groups are White (94.3%), Black or African American (0.9%), Hispanic or Latino (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Lewis County, New York is 42.0 years. Residents are 49.3% female and 50.7% male.
The median home value in Lewis County is $158,000 and median monthly rent is $821. 80.4% of occupied housing units are owner-occupied. The county has 15,572 total housing units, 29.6% of which are vacant.
The largest employment sector in Lewis County, New York is professional, scientific, and management services, employing 26.3% of workers. The unemployment rate is 3.2%.
New York is among the largest cities associated with Lewis County, New York, with a population of 8,516,202.
Lewis County, NY Climate
Lewis County, NY has an average annual temperature of 6.4°C (44°F) and receives about 1077 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
6.4°C
Avg Temp
1077
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -8° / 17° | 89 mm |
| February | -7° / 19° | 65 mm |
| March | -1° / 29° | 76 mm |
| April | 6° / 42° | 82 mm |
| May | 13° / 55° | 84 mm |
| June | 17° / 63° | 90 mm |
| July | 20° / 68° | 93 mm |
| August | 19° / 66° | 98 mm |
| September | 14° / 58° | 107 mm |
| October | 8° / 47° | 91 mm |
| November | 2° / 36° | 107 mm |
| December | -5° / 23° | 95 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Lewis County, NY
The most comfortable months to visit Lewis County, NY are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 26°C high). The coldest is January (near -14°C low). September is usually the wettest month.
Where to stay near Lewis County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.