Sidney

County:: Kennebec County
County Seat:: No
Area (mi²):: 42.247
State:: Maine

Sidney is located in Kennebec County, Maine. Sidney has a 2025 population of 4,956. Sidney is currently growing at a rate of 1.1% annually and its population has increased by 6.26% since the most recent census, which recorded a population of 4,664 in 2020.

The average household income in Sidney is $105,401 with a poverty rate of 5.87%. The median age in Sidney is 39.7 years: 37.8 years for males, and 42 years for females.

Demographics

The racial composition of Sidney includes 96.66% White, and smaller percentages for Two or more races, Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	4,568	96.66%
Two or more races	85	1.8%
Asian	73	1.54%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Sidney Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Sidney's average per capita income is $50,938. Household income levels show a median of $81,250. The poverty rate stands at 5.87%.

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	$100,263	-
Families	$91,224	$110,638
Households	$81,250	$105,401
Non Families	$47,949	$53,927

$50,938

Average Income

$81,250

Median Household Income

5.87%

Poverty Rate