Quincy (Illinois)

Adams County


Quincy [ kwɪnsi ] is a city on the Mississippi River and county seat of Adams County in the western part of the U.S. state of Illinois. In the census in 2010, Quincy had 40 633 inhabitants.


Quincy is located on the Mississippi River, which forms the border with Missouri. The city is located at 39 ° 55'56 " north latitude and 91 ° 23'19 " west longitude and extending over 37.81 km ².

Quincy is located 180 km north- west of St. Louis, 152 kilometers west of Springfield, 176 km southwest of Peoria, 190 km south of Davenport and 289 km north-east of Kansas City.


On the eastern outskirts of Quincy runs in a north -south Interstate 172 From Missouri leads the U.S. Highway 24 through the Quincy Bayview Bridge in the city center, where it meets with the Illinois State Routes 57, 96 and 104

In Quincy several railway lines meet, the various railway companies (including BNSF Railway, Amtrak ) are operated.

The nearest airport is 20 km east of the city center Quincy Regional Airport.

Demographic data

According to the census in 2010 lived in Quincy 40 633 people in 16,938 households. The population density was 1074.7 people per square kilometer.

The racial the population was composed of 90.8 percent white, 5.4 percent African American, 0.2 percent Native American, 0.9 percent Asian and other ethnic groups; 2.2 percent were descended from two or more races. Regardless of ethnicity were 1.4 percent of the population are Hispanic or Latino of any race.

In the 16,938 households lived statistically 2.28 per person.

22.3 percent of the population were under 18 years old, 59.4 percent were between 18 and 64 and 18.3 percent were 65 years or older. 52.1 percent of the population was female.

The median income for a household was $ 39,024. The per capita income was $ 23,736. 16.0 percent of the population lived below the poverty line.

Sons and daughters of the town

  • Mary Astor, actress
  • Tad Hilgenbrink, actor
  • Neysa McMein, illustrator
  • Paul Tibbets, pilot of the Air Force. He initiated on August 6, 1945 the first dropping an atom bomb on a populated area.
  • John Milton Yinger (1916-2011), sociologist

Twin Cities

  • Germany Herford, North Rhine -Westphalia
  • People's Republic of China Jiaxing in Zhejiang province, China