Derby, Connecticut Population 2021

12,213
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Derby is a city located in New Haven County Connecticut. With a 2020 population of 12,213, it is the 20th largest city in Connecticut and the 2682nd largest city in the United States . Derby is currently declining at a rate of -0.51% annually and its population has decreased by -5.34% since the most recent census, which recorded a population of 12,902 in 2010. Derby reached it's highest population of 12,878 in 2010. Spanning over 5 miles, Derby has a population density of 2,416 people per square mile.

The average household income in Derby is $72,778 with a poverty rate of 12.99%. The median rental costs in recent years comes to $1,087 per month, and the median house value is $206,300. The median age in Derby is 40 years, 38.2 years for males, and 41.2 years for females.

Derby Demographics

According to the most recent ACS, the racial composition of Derby was:

  • White: 78.48%
  • Black or African American: 8.87%
  • Other race: 4.66%
  • Asian: 4.04%
  • Two or more races: 3.78%
  • Native American: 0.17%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Derby, Connecticut is 12,213 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 12,402.The last official US Census in 2010 recorded the population at 12,902.

Derby, Connecticut Population 2021

Population by Race

Race Population Percentage
White9,79878.48%
Black or African American1,1088.87%
Some Other Race5824.66%
Asian5044.04%
Two or More Races4723.78%
American Indian and Alaska Native210.17%
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Derby Population by Race

Derby Population Pyramid $2021

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Derby Median Age

40


Total

38.2


Male

41.2


Female

Derby Adults

There are 10,045 adults, (2,118 of whom are seniors) in Derby.

Derby Age Dependency

57.5

Age Dependency Ratio

26.7

Old Age Dependency Ratio

30.8

Child Dependency Ratio

Derby Sex Ratio

Female

6,717

53.80%

Male

5,768

46.20%

Derby Population by Age

Derby Renter vs Owner Occupied by Household Type

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Derby Household Types

Type Owner Renter
Married75.9%24.1%
All57.3%42.7%
Non Family49.6%50.4%
Male45.8%54.2%
Female39.1%60.9%

57.3%

Rate of Home Ownership

Derby Households and Families

Type Count Average Size Owned
All5,1462.3857.3
Non Family2,2241.2249.6
Married1,8903.1475.9
Female9123.4639.1
Male1203.7745.8

3.24

Average Family Size

2.38

Average Household Size

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Derby Households by Type

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Education Attained Count Percentage
Less Than 9th Grade5806.28%
9th to 12th Grade6937.50%
High School Graduate3,15734.17%
Some College1,76619.11%
Associates Degree1,17612.73%
Bachelors Degree1,33914.49%
Graduate Degree5285.71%
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Derby Educational Attainment by Sex (over 25)

Derby Educational Attainment by Race

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Race Total High School Bachelors
White6,3785,6221,388
Hispanic1,5411,199197
Black785758138
Other Race4463514
Asian344196103
2+ Races243243120
Native American21

The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.

The highest rate of bachelors degrees is among 2+ races people with a rate of 49.38%.

Derby Educational Attainment by Race

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Name Average Male Female
Overall$45,235$46,232$44,299
Less Than 9th Grade$30,684$31,836$28,554
High School Graduate$37,477$38,724$34,634
Some College$45,725$54,894$40,250
Bachelors Degree$55,921$60,066$55,543
Graduate Degree$78,224$92,115$60,980

$45,235

Average Earnings

$46,232

Average Male

$44,299

Average Female

Derby Earnings by Educational Attainment

Derby Language by Age

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Derby Language

74.33% of Derby residents speak only English, while 25.67% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 12.15% of the population.

Derby Language

Derby Poverty by Race

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Name Total In Poverty Poverty Rate
White7,7731,07813.87%
Hispanic2,73337013.54%
Multiple46619541.85%
Other58112922.20%
Asian495459.09%
Black1,105413.71%

12.99%

Overall Poverty Rate

9.06%

Male Poverty Rate

16.40%

Female Poverty Rate

Poverty in Derby

The race most likely to be in poverty in Derby is Multiple, with 41.85% below the poverty level.

The race least likely to be in poverty in Derby is Black, with 3.71% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.75%. Among those working part-time, it was 12.02%, and for those that did not work, the poverty rate was 25.80%.

Derby Poverty

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Name Poverty
Less Than 9th Grade28.22%
Some College11.80%
High School8.25%
Bachelors or Greater6.18%

Derby Poverty Rate by Education

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Rate Poverty
Female Unemployed22.22%
Male Unemployed9.82%
Female Employed4.88%
Male Employed3.84%

Derby Poverty Rate by Employment Status and Sex

Derby Income by Household Type

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Name Median Mean
Households$56,357$72,778
Families$68,775$90,925
Married Families$92,692-
Non Families$38,649$48,483
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Income by Household Type

Derby Marital Status

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Marriage Rates

39.9%

Overall Marriage Rate

42.8%

Male Marriage Rate

37.6%

Female Marriage Rate

Derby Married by Age and Sex

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Derby Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Derby Marital Status by Race

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Derby Marital Status

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578

Number of Veterans

522

Male Veterans

56

Female Veterans

War Veterans
Vietnam161
Second Gulf War140
Korea78
First Gulf War72
World War II

Derby Veterans by War

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Age Group Veterans
65 to 74159
75+142
35 to 54126
55 to 6480
18 to 3471

Derby Veterans by Age

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Name Veterans % of Total
White5226.42%
Hispanic1116.51%
Other Race4910.38%
Black70.89%

Derby Veterans by Race

Derby Veterans by Education

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12.09%

Veteran Poverty Rate

20.04%

Veteran Disability Rate

Derby Veterans by Education

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67.7%

Labor Force Participation

60.7%

Employment Rate

10.4%

Unemployment Rate

Derby Employment by Age

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Derby Employment by Race

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Derby Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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64.45%

Born in Derby

83.56%

Native Born

16.44%

Foreign Born

5.61%

Non Citizen

10.82%

Naturalized

Place of Birth

83.56% of Derby residents were born in the United States, with 64.45% having been born in Connecticut. 5.61% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Derby Place of Birth

Year Population Growth Annual Growth Rate
202112,213-63-0.51%
202012,276-63-0.51%
201912,339-63-0.51%
201812,402-116-0.93%
201712,518-29-0.23%
201612,547-59-0.47%
201512,606-166-1.30%
201412,772-31-0.24%
201312,803-37-0.29%
201212,84080.06%
201112,832-46-0.36%
201012,8784870.39%
200012,3911920.16%
199012,199-147-0.12%
198012,346-253-0.20%
197012,5994670.38%
196012,1321,8731.69%
195010,259-28-0.03%
194010,287-501-0.47%
193010,788-450-0.41%
192011,2382,2472.26%
19108,9911,0611.26%
19007,9300.00%

Derby Population by Year