Quincy, Illinois Population 2022

39,229
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Quincy is a city located in Adams County Illinois. It is also the county seat of Adams County. With a 2020 population of 39,229, it is the 46th largest city in Illinois and the 1141st largest city in the United States. Quincy is currently declining at a rate of -0.30% annually and its population has decreased by -2.20% since the most recent census, which recorded a population of 40,111 in 2020. Spanning over 16 miles, Quincy has a population density of 2,497 people per square mile.

The average household income in Quincy is $65,733 with a poverty rate of 15.32%. The median rental costs in recent years comes to $688 per month, and the median house value is $118,800. The median age in Quincy is 40.7 years, 39.2 years for males, and 42.1 years for females.

Quincy Demographics

According to the most recent ACS, the racial composition of Quincywas:

  • White: 88.97%
  • Black or African American: 6.50%
  • Two or more races: 3.17%
  • Asian: 0.72%
  • Other race: 0.47%
  • Native American: 0.17%
  • Native Hawaiian or Pacific Islander: 0.01%
The current population of Quincy, Illinois is 39,229 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 40,111.

Quincy, Illinois Population 2022

2021 and 2022 population is estimated by projecting the 2019 numbers.

Quincy Metro Area Population by Year

Population by Race

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Quincy Population by Race

Quincy Population Pyramid 2022

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Quincy Median Age

40.3


Total

37.8


Male

42.7


Female

Quincy Adults

There are 31,540 adults, (8,321 of whom are seniors) in Quincy.

Quincy Age Dependency

Age Dependency Ratio

35.8

Old Age Dependency Ratio

36.9

Child Dependency Ratio

Quincy Sex Ratio

Female

20,876

52.05%

Male

19,235

47.95%

Quincy Population by Age

Quincy Renter vs Owner Occupied by Household Type

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Quincy Household Types

63.5%

Rate of Home Ownership

Quincy Households and Families

2.97

Average Family Size

2.26

Average Household Size

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Quincy Households by Type

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Quincy Educational Attainment by Sex (over 25)

Quincy Educational Attainment by Race

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The highest rate of high school graduation is among islander people with a rate of 100.00%.

The highest rate of bachelors degrees is among other race people with a rate of 60.76%.

Quincy Educational Attainment by Race

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$36,436

Average Earnings

$41,739

Average Male

$29,068

Average Female

Quincy Earnings by Educational Attainment

Quincy Language by Age

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Quincy Language

97.18% of Quincy residents speak only English, while 2.82% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.18% of the population.

Quincy Language

Quincy Poverty by Race

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15.32%

Overall Poverty Rate

14.18%

Male Poverty Rate

16.38%

Female Poverty Rate

Poverty in Quincy

The race most likely to be in poverty in Quincy is Islander, with 100.00% below the poverty level.

The race least likely to be in poverty in Quincy is Other, with NaN% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.26%. Among those working part-time, it was 15.83%, and for those that did not work, the poverty rate was 27.20%.

Quincy Poverty

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Quincy Poverty Rate by Education

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Quincy Poverty Rate by Employment Status and Sex

Quincy Income by Household Type

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Income by Household Type

Quincy Marital Status

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Marriage Rates

47.6%

Overall Marriage Rate

50.6%

Male Marriage Rate

44.8%

Female Marriage Rate

Quincy Married by Age and Sex

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Quincy Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.

Quincy Marital Status by Race

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Quincy Marital Status

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2,560

Number of Veterans

Male Veterans

Female Veterans

Quincy Veterans by War

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Quincy Veterans by Age

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Quincy Veterans by Race

Quincy Veterans by Education

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5.58%

Veteran Poverty Rate

33.83%

Veteran Disability Rate

Quincy Veterans by Education

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63.4%

Labor Force Participation

60.1%

Employment Rate

5.2%

Unemployment Rate

Quincy Employment by Age

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Quincy Employment by Race

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Quincy 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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74.77%

Born in Quincy

98.56%

Native Born

1.44%

Foreign Born

0.31%

Non Citizen

1.13%

Naturalized

Place of Birth

98.56% of Quincy residents were born in the United States, with 74.77% having been born in Illinois. 0.31% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Quincy Place of Birth

Note: 2021 and 2022 data is projected

Quincy Population by Year