St. Lawrence County, New York
Located in New York, St. Lawrence County has a population of 107,226 residents and a median age of 39.3 years, making it the #583 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 16.9%. The median home value is $121,900, and the median household income is $62,850, which is 16% below the national median.
Demographics
St. Lawrence County has a population of 107,226, making it the #583 most populous county in the US. The median age is 39.3 years, which is 1.0% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in St. Lawrence County is $62,850, ranking #1,815 out of 3,222 counties — 16.4% below the national median. The poverty rate is 16.9% and unemployment stands at 5.3%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in St. Lawrence County is $121,900 (-56.8% vs national). Renters pay a median of $818/mo and the homeownership rate is 71.9%.
Median Home Value Trend
Rankings →Household Type
Education
In St. Lawrence County, 25.3% of adults age 25+ hold a bachelor's degree or higher, which is 24.9% below the national average, ranking #1,188 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in St. Lawrence County is 76.8 years. 17.1% of adults report poor or fair health and 6.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
19.6% of adults in St. Lawrence County smoke , 37.1% are obese , and 22.7% report excessive drinking. The drug overdose death rate is 21.7 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in St. Lawrence County is 1.3 per 100,000 and the suicide rate is 12.4 per 100,000. Motor vehicle deaths occur at a rate of 9.5 per 100,000.
Homicide Rate Trend
Families & Children
21.4% of children in St. Lawrence County live in poverty and the infant mortality rate is 6.6 per 1,000 live births. The teen birth rate is 9.8 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in St. Lawrence County is 53.4%. The mean commute time is 22.9 min, which is 16.9% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, St. Lawrence County voted Republican with a margin of 18.0%. The vote was 41% Dem / 59% Rep. Compared to 2020, the margin shifted 6.3 toward Republicans .
Vote Share Over Time
About St. Lawrence County, New York
St. Lawrence County, New York has a total population of 107,226, making it the 583rd most populous county in the United States. The median age in St. Lawrence County is 39.3 years, which is 1.0% above the national median of 38.9 years.
The median household income in St. Lawrence County is $62,850, which ranks #1,815 of 3,222 counties nationwide. This is 16.4% below the national median of $75,149. The poverty rate is 16.9%, higher than the national rate of 12.6%. The unemployment rate stands at 5.3%.
The median home value in St. Lawrence County is $121,900, 56.8% below the national median. Renters in St. Lawrence County pay a median gross rent of $818 per month. The homeownership rate is 71.9%, compared to the national rate of 64.4%.
In St. Lawrence County, 25.3% of residents aged 25 and older hold a bachelor's degree or higher, 24.9% below the national average of 33.7%. Health insurance coverage stands at 94.0% of the population. The average commute time for workers is 22.9 min.
St. Lawrence County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 91.2% of the population, followed by Two or More Races (2.6%) and Hispanic or Latino (2.5%).
All data for St. Lawrence County, New York comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.