Quincy, IL Profile: Facts, Map & Data

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Quincy, Illinois - Basic Facts

Real Estate Resources

The City of Quincy had a population of 40,697 as of July 1, 2016. Quincy ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Quincy is located at latitude 39.9337 and longitude -91.3793 in Adams County. The formal boundaries for the City of Quincy (see map below) encompass a land area of 15.87 sq. miles and a water area of 0.04 sq. miles. Adams County is in the Central time zone (GMT -6). The elevation is 568 feet.

The City of Quincy (GNIS ID: 2396301) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Quincy is located within Township of Quincy, a minor civil division (MCD) of Adams County.

Beneath the boundary map are tables with Quincy population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Quincy: Bluffs, Gem City.


Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.

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City of Quincy, IL Boundary Map



Also See: BIG Map | Driving Directions | IL Congressional Districts
Boundary Maps: Township of Quincy | Adams County | Illinois Counties

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Quincy, IL Data & Demographics (As of July 1, 2016)

POPULATION

Total Population 40,697
Population in Households 38,614
Population in Familes 28,875
Population in Group Qrtrs 2,083
Population Density1 2,564
Diversity Index2 22
 

HOUSEHOLDS

Total Households 17,120
Average Household Size 2.26
Family Households 9,861
Average Family Size 3

HOUSING

Total Housing Units 18,895 (100%)
Owner Occupied HU 10,626 (56.2%)
Renter Occupied HU 6,493 (34.4%)
Vacant Housing Units 1,775 ( 9.4%)
Median Home Value $98,952
Average Home Value $127,746
 

INCOME

Median Household Income $40,715
Average Household Income $56,149
Per Capita Income $24,063
  (Compound Annual Growth Rates)

GROWTH RATES

2010-2015 2015-2020
Population 0.02% 0.02%
Households -0.03% -0.02%
Families -0.17% -0.16%
Median Household Income   1.04%
Per Capita Income   1.43%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Quincy, IL - Peer Comparisons by Rank and Percentile

The table below compares Quincy to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 43 97th
Population Density1 # 174 87th
Diversity Index2 # 440 68th
Median Household Income # 1107 19th
Per Capita Income # 862 37th

Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.