St. Lawrence County's 2026 population is estimated at 105,140, reflecting a -0.5% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). St. Lawrence County is the 28th largest county in New York. The 2010 population was 111,821 and has grown -5.97% since 2010.
Data after 2023 is projected based on recent change
Overall: 39.3 years
Female: 41 years
Male: 38 years
There are 85,913 adults, (20,152 of whom are seniors) in St. Lawrence County.
Female: 52,353 (48.8%)
Male: 54,873 (51.2%)
The racial composition of St. Lawrence County includes 91.74% White, and smaller percentages for Black or African American, Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 98,372 | 91.74% |
| Two or more races | 4,163 | 3.88% |
| Black or African American | 2,172 | 2.03% |
| Asian | 1,185 | 1.11% |
| Other race | 785 | 0.73% |
| Native American | 541 | 0.5% |
| Native Hawaiian or Pacific Islander | 8 | 0.01% |
St. Lawrence County 's average per capita income is $47,505. Household income levels show a median of $62,850. The poverty rate stands at 16.86%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $95,798 | $115,849 |
| Families | $80,443 | $101,669 |
| Households | $62,850 | $82,664 |
| Non Families | $34,898 | $48,335 |
Average Income
Median Household Income
Poverty Rate
