St. Lawrence County, New York Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 27th-largest in New York
The population of St. Lawrence County, New York is 107,796 as of the 2023 American Community Survey, making it the 27th-largest county in New York. The median household income is $61,900, the median home value is $119,800, and the median age is 39.0.
The population of St. Lawrence County has declined 5.0% since 2010 (111,821 → 106,198), a -0.37% annualized rate.
107,796
Population
-0.37%
Annual growth
40
People / sq mi
$61,900
Median Income
$119,800
Median Home Value
St. Lawrence County covers 2,680 sq mi of land at 40.2 people per square mile.
About St. Lawrence County, NY
St. Lawrence County is a county in New York with a population of 107,796. It ranks #27 among counties in New York by population. The median age is 39.0, in line with the national median. The population is 51.0% male and 49.0% female.
The median household income in St. Lawrence County is $61,900, below the US median of $74,580. 11.9% of residents live below the federal poverty level. Home values sit at a median of $119,800, with monthly rent averaging $799. The homeownership rate of 71.5% is higher than the national rate of 64.8%.
Educational attainment in St. Lawrence County reflects 24.6% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.1% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.0 minutes each way.
St. Lawrence County Population History (2010-2024)
The county of St. Lawrence County had a population of 111,821 in 2010 and 106,198 in 2024, a -5.0% growth over 14 years. The peak was 112,388 in 2012. Average annual growth rate: -0.37%.
106,198
Population (2024)
111,821
Population (2010)
112,388
Peak (2012)
-0.37%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 111,821 |
| 2011 | 112,290 |
| 2012 | 112,388 |
| 2013 | 111,967 |
| 2014 | 111,476 |
| 2015 | 110,399 |
| 2016 | 109,506 |
| 2017 | 108,768 |
| 2018 | 108,534 |
| 2019 | 107,766 |
| 2020 | 108,327 |
| 2021 | 107,835 |
| 2022 | 107,043 |
| 2023 | 106,727 |
| 2024 | 106,198 |
Race & Ethnicity
| White | 92.1% |
| Black or African American | 2.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.6% |
| Two or More Races | 0.0% |
Age & Sex
39.0
Median Age
49.0%
Female
51.0%
Male
18.4%
Age 65+
Age Distribution
Children (under 15): 16.3% · Seniors (65+): 18.4%
Income & Poverty
| Median household income | $61,900$-22,678 vs state |
| Mean household income | $78,890 |
| Per-capita income | $31,574 |
| Poverty rate | 11.9%+2.1% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 50.1% |
Top Industries by Employment
The largest employment sector in St. Lawrence County is professional & business services, accounting for 35.3% of workers.
How residents commute
0.3%
Drive alone
6.7%
Carpool
75.0%
Public transit
7.1%
Work from home
21.0 min
Avg commute
Housing
$119,800$-283,200 vs state
Median home value
$799
Median rent
71.5%
Homeownership rate
51,884
Total housing units
80.4%
Occupied
19.6%
Vacant
28.5%
Renter-occupied
Social & access
94.1%
With health insurance
90.5%
With broadband internet
14.5%
Foreign-born
7.1%
Veterans (18+)
17.7%
With a disability
93.0%
Speak language other than English at home
Education
89.1%
High School+
24.6%
Bachelor's+
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County rankings
Frequently Asked Questions
St. Lawrence County, New York has a population of 107,796 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 27th-largest county in New York. Population density is 40 people per square mile.
The population of St. Lawrence County has declined 5.0% since 2010 (111,821 → 106,198), a -0.37% annualized rate.
The median household income in St. Lawrence County, New York is $61,900, with mean (average) household income of $78,890 and per-capita income of $31,574. 11.9% of residents live below the federal poverty level.
In St. Lawrence County, the largest racial and ethnic groups are White (92.1%), Black or African American (2.0%), Hispanic or Latino (1.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in St. Lawrence County, New York is 39.0 years. Residents are 49.0% female and 51.0% male.
The median home value in St. Lawrence County is $119,800 and median monthly rent is $799. 71.5% of occupied housing units are owner-occupied. The county has 51,884 total housing units, 19.6% of which are vacant.
The largest employment sector in St. Lawrence County, New York is professional, scientific, and management services, employing 35.3% of workers. The unemployment rate is 3.0%.
New York is among the largest cities associated with St. Lawrence County, New York, with a population of 8,516,202.
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Statewide data for New York
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.