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 and multiracial populations.

Population by Race

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%

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