Middle Island

County:: Suffolk County
County Seat:: No
Area (mi²):: 8.219
State:: New York

Middle Island is a CDP located in Suffolk County, New York. Middle Island has a 2025 population of 10,793. Middle Island is currently growing at a rate of 0.19% annually but its population has decreased by -2.15% since the most recent census, which recorded a population of 11,030 in 2020.

The average household income in Middle Island is $106,925 with a poverty rate of 12.02%.The median age in Middle Island is 43.4 years: 40.9 years for males, and 45.7 years for females.

Demographics

The racial composition of Middle Island includes 76.33% White, 13.53% Black or African American, 3.03% other race, and smaller percentages for Asian, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	8,462	76.33%
Black or African American	1,500	13.53%
Two or more races	651	5.87%
Other race	336	3.03%
Asian	105	0.95%
Native American	32	0.29%

Middle Island Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Middle Island's average per capita income is $60,259. Household income levels show a median of $89,702. The poverty rate stands at 12.02%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$146,473	-
Families	$105,043	$126,623
Households	$89,702	$106,925
Non Families	$53,016	$70,381

$60,259

Average Income

$89,702

Median Household Income

12.02%

Poverty Rate