Derby

County:: Naugatuck Valley Planning Region
County Seat:: No
Area (mi²):: 5.056
State:: Connecticut

Derby is a city located in Naugatuck Valley Planning Region, Connecticut. Derby has a 2025 population of 12,468. Derby is currently growing at a rate of 0.25% annually and its population has increased by 1.27% since the most recent census, which recorded a population of 12,312 in 2020.

The average household income in Derby is $92,848 with a poverty rate of 9.25%. The median age in Derby is 46.3 years: 46.5 years for males, and 46.2 years for females.

Demographics

The racial composition of Derby includes 68.54% White, 13.35% Black or African American, 8.48% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Black or African American

Other race

Two or more races

Asian

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	8,471	68.54%
Black or African American	1,650	13.35%
Other race	1,048	8.48%
Two or more races	913	7.39%
Asian	237	1.92%
Native American	40	0.32%
Native Hawaiian or Pacific Islander	0	0%

Derby Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Derby's average per capita income is $55,046. Household income levels show a median of $76,263. The poverty rate stands at 9.25%.

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	$114,271	-
Families	$107,074	$119,892
Households	$76,263	$92,848
Non Families	$38,511	$55,083

$55,046

Average Income

$76,263

Median Household Income

9.25%

Poverty Rate