South St. Lawrence, Thousand Island - Seaway, NY demographics:
population, income, and more

Total population
9,152
3.3% year-over-year change
Median household income
$68,036/yr
4.8% year-over-year change
Housing units
5,508
-2.5% year-over-year change

South St. Lawrence population

How many people live in South St. Lawrence

South St. Lawrence is home to 9,152 residents, according to the most recent Census data. Gender-wise, 52.4% of South St. Lawrence locals are male, and 47.6% are female.

Total population
9,152
3.3% year-over-year change
Gender ratio
Male
52.4%
4,796
Female
47.6%
4,356
Value Percent YoY change
Male 4,796 52.4% 5.2%
Female 4,356 47.6% 1.2%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in South St. Lawrence is 51, with the population distributed as follows: about 16.7% are children under 15, then 17.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 20.2% of the population, while another 24.8% fall into the 45 to 64 bracket. Finally, around 20.5% are 65 or older.

Median age
51.2
Age breakdown
Under 15
16.7%
15 to 24
17.8%
25 to 44
20.2%
45 to 64
24.8%
Over 65
20.5%
Value Percent YoY change
Under 15 1,525 16.7% 12.3%
15 to 24 1,630 17.8% 4.2%
25 to 44 1,848 20.2% 5.1%
45 to 64 2,268 24.8% -0.8%
Over 65 1,880 20.5% -0.7%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In South St. Lawrence, 97.2% of the population are US-born citizens, while 1.6% have gained naturalized citizenship. At the same time, 1.2% of residents are non-citizens. As for race, 92.3% of locals are Caucasian, 1.7% are African American and 0.8% have Asian roots. There’s also a share of 4.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
97.2%
Non-U.S.-born citizens
1.6%
Non-citizens
1.2%
Value Percent YoY change
U.S.-born citizens 8,895 97.2% 3.6%
Non-U.S.-born citizens 149 1.6% -7.5%
Non-citizens 107 1.2% -10.1%
Racial breakdown
White
92.3%
Black or African American
1.7%
American Indian and Alaska Native
0.2%
Asian
0.8%
Native Hawaiian and other Pacific Islander
0%
Two or more races
4.4%
Other
0.7%
Value Percent
White 8,447 92.3%
Black or African American 152 1.7%
American Indian and Alaska Native 14 0.2%
Asian 71 0.8%
Native Hawaiian and other Pacific Islander 2 0%
Two or more races 400 4.4%
Other 66 0.7%

Households in South St. Lawrence

A peek inside South St. Lawrence households

South St. Lawrence has 3,461 households, with an average of 2 members in each. Of these, 63.4% are families, while the remaining 36.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
3,461
-0.8% year-over-year change
Average people per household
2
Non-family households
1,266
Family households
2,194
Value Percent YoY change
Non-family households 1,266 36.6% -2.3%
Family households 2,194 63.4% 0.1%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in South St. Lawrence

The housing landscape of South St. Lawrence

South St. Lawrence's housing consists of 5,508 units, with 82.3% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.5% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 9.6% of the housing landscape.

Housing units
5,508
-2.5% year-over-year change
Housing types
Value Percent
1 unit, detached 4,536 82.3%
1 unit, attached 29 0.5%
2 units 111 2%
3 or 4 units 86 1.6%
5 to 9 units 34 0.6%
10 to 19 units 31 0.6%
20 to 49 units 102 1.8%
50 or more units 41 0.7%
Mobile home 529 9.6%
Boat, RV, van, etc. 10 0.2%
Homes built since 2020
72
44.0% year-over-year change

The age of buildings in South St. Lawrence

In South St. Lawrence, the median construction year is 1965. About 24.7% of homes were built before the 1940s, with another 6.7% going up by 1949. Most development happened in the second half of the 20th century. Then, 8.6% of homes were added from 2000 to 2009, 6% between 2010 and 2019, and 1.3% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 1,360 24.7% -1.3%
Built between 1940 and 1949 371 6.7% 2.5%
Built between 1950 and 1959 558 10.1% -2.5%
Built between 1960 and 1969 487 8.8% 1.2%
Built between 1970 and 1979 795 14.4% -6.7%
Built between 1980 and 1989 498 9% -16.0%
Built between 1990 and 1999 563 10.2% -5.4%
Built between 2000 and 2009 476 8.6% -6.5%
Built between 2010 and 2019 329 6% 27.0%
Built in 2020 or later 72 1.3% 44.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

South St. Lawrence occupancy rates

Out of the 3,461 occupied housing units in South St. Lawrence, 79.7% are owner-occupied, while 20.3% are lived in by tenants. Meanwhile, 37.2% of all homes on the local market sit vacant.

Occupied housing units
3,461
-0.8% year-over-year change
Occupancy breakdown
Renter occupied
703
Owner occupied
2,758
Value Percent YoY
change
Renter occupied 703 20.3% -11.6%
Owner occupied 2,758 79.7% 2.4%
Unoccupied housing units
37.2%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

South St. Lawrence housing costs

Housing costs in South St. Lawrence come to a median of $714 per month, while tenants specifically pay a median gross rent of $871.

Median housing costs per month
$714/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in South St. Lawrence
$871/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in South St. Lawrence

South St. Lawrence education at a glance

About 39.4% of the population in South St. Lawrence went to high school, while 19.7% pursued college studies. Another 14.9% earned an associate degree and 12.6% hold a bachelor’s. Meanwhile, 11% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 176 2.4% -3.3%
High school diploma 2,884 39.4% 3.1%
College diploma 1,441 19.7% -8.0%
Associate degree 1,092 14.9% 5.2%
Bachelor's degree 920 12.6% 9.7%
Graduate degree 808 11% 0.4%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in South St. Lawrence

How much people earn in South St. Lawrence

The average annual household income in South St. Lawrence was $72,193 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +4.3% change from the previous year. At the same time, the median income stood at $68,036, reflecting a +4.8% shift over the same period.

Average household income in South St. Lawrence
$72,193/year
4.3% year-over-year change
Median household income in South St. Lawrence
$68,036/year
4.8% year-over-year change

South St. Lawrence income by age

In South St. Lawrence, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $78,498. Those with someone between 45 and 64 in charge, often well established professionally, earn $77,500 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $43,083, while those led by someone over 65, many of whom may be retired, have about $55,000 in earnings. Overall, 85% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $43,083 5.0%
25 - 44 $78,498 3.8%
45 - 64 $77,500 12.4%
Over 65 $55,000 -3.3%
Above poverty level
6,905
Below poverty level
1,218
Value Percent YoY
change
Above poverty level 6,905 85% 5.2%
Below poverty level 1,218 15% -7.4%

Employment in South St. Lawrence

Workforce and job types in South St. Lawrence

79.1% of the working population are employed in professional or administrative positions, while 20.9% are in hands-on or service-based jobs. Also, 11.9% run their own businesses, 46.8% are employed by private companies, and 24.6% work in the public sector.

Workforce demographics

White collar
2,905
Blue collar
768
Value Percent YoY change
White collar 2,905 79.1% 1.2%
Blue collar 768 20.9% -3.3%
Employer type
Self employees
11.9%
Private companies
46.8%
Governmental workers
24.6%
Not for profit companies
16.7%
Value Percent YoY change
Self employees 436 11.9% 8.7%
Private companies 1,717 46.8% 3.5%
Governmental workers 905 24.6% -8.6%
Not for profit companies 615 16.7% 0.2%

Transportation in South St. Lawrence

How people get around in South St. Lawrence

Commuting methods vary: 90.8% of residents travel by personal vehicle and 7.9% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 2,834 90.8% 0.2%
Taxicab 2 0.1% 0.0%
Bus or trolleybus 2 0.1% -50.0%
Ferryboat 3 0.1% -25.0%
Motorcycle 29 0.9% 16.0%
Bicycle 4 0.1% 0.0%
Walk 247 7.9% -5.4%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

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FAQs about South St. Lawrence demographics 

What is the total population of South St. Lawrence?

South St. Lawrence has a total population of 9,152 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +3.3% compared to a year ago.

What is the gender ratio in South St. Lawrence?

The gender ratio in South St. Lawrence is as follows:
  • 52.4% males (4,796 residents)
  • 47.6% females (4,356 residents)

What is the median age in South St. Lawrence?

The median age in South St. Lawrence is 51.2.

What is the age distribution of the population in South St. Lawrence?

The age distribution in South St. Lawrence is as follows:
  • Under 15: 16.7% (1,525 residents)
  • Ages 15-24: 17.8% (1,630 residents)
  • Ages 25-44: 20.2% (1,848 residents)
  • Ages 45-64: 24.8% (2,268 residents)
  • Over 65: 20.5% (1,880 residents)

What is the racial and ethnic makeup of South St. Lawrence?

The racial and ethnic makeup of South St. Lawrence is as follows:
  • White: 92.3% (8,447 residents)
  • Black or African American: 1.7% (152 residents)
  • American Indian and Alaska Native: 0.2% (14 residents)
  • Asian: 0.8% (71 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (2 residents)
  • Two or More Races: 4.4% (400 residents)
  • Other: 0.7% (66 residents)

What percentage of the population in South St. Lawrence are U.S.-born citizens?

U.S.-born citizens represent 97.2% of the population in South St. Lawrence.

How many housing units are there in South St. Lawrence?

There are 5,508 housing units in South St. Lawrence, reflecting a -2.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in South St. Lawrence and what is the average household size?

South St. Lawrence has a total of 3,461 households, with an average of 2 people in each.

What is the median household income in South St. Lawrence?

South St. Lawrence has a median household income of $68,036, representing a +4.8% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for South St. Lawrence?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 79.1% (2,905 residents)
  • Blue-collar workers: 20.9% (768 residents)

Places of employment:
  • Self-employed: 11.9% (436 residents)
  • Private companies: 46.8% (1,717 residents)
  • Governmental workers: 24.6% (905 residents)
  • Not-for-profit companies: 16.7% (615 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025