Quincy

Population

39,589 (2020)

Type

City

Area

15.76 sq mi (40.83 km²), 0.04 sq mi water

Median age

40.5

Households

21,475

Persons per household

2.3

Median household income

$50,488

Average house value

$123,138

Businesses

1,539

Employees

29,895

Government

CITY OF QUINCY

Government office

730 MAINE ST, QUINCY, IL 62301