Quincy, Illinois
City in Adams County, Illinois · ZIP 62301, 62305
- Adams County
- Census data · ACS 2019-2023
- 11 public schools
- 38,786 (2024 estimate)Population
- 17,451Households
- $56,372Median household income
- $146,100Median home value
- 11Public schools
- 2ZIP codes
About Quincy
This page shows only what has been published about Quincy: Census facts with their sources first, then its businesses, jobs, events, people in public roles, housing and questions as they are added. Nothing here is written by the town government.
Town intelligenceOfficial sources, refreshed yearly
| Census | Population |
|---|---|
| 2000 | 40,366 |
| 2010 | 40,633 |
| 2020 | 39,463 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: Census 2000 Summary File 1: total population, place level, state 17, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 17, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 17, retrieved November 14, 2026.
Median household income $56,372 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.
Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 17, retrieved November 14, 2026.
- Owner occupied
- 11,300 units
- Renter occupied
- 6,151 units
- Vacancy rate
- 8.3%
Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.
Source: American Community Survey 5-year data profile 2019–2023, place level, state 17, retrieved November 14, 2026.
| Measure | Quincy | Adams County | Illinois |
|---|---|---|---|
| Population | 39,188 | 65,166 | 12,692,653 |
| Median household income | $56,372 | $64,962 | $81,702 |
| Median age | 40.1 | 41.1 | 38.9 |
| Median home value | $146,100 | $155,900 | $250,500 |
| Bachelor’s degree or higher | 26.6% | 27.0% | 37.2% |
| Foreign-born residents | 2.0% | 1.4% | 14.4% |
| Owner-occupied homes | 64.8% | 72.5% | 66.8% |
| Mean commute to work | 13.9 minutes | 17.0 minutes | 28.1 minutes |
Source: American Community Survey 5-year data profile 2019–2023, place level, state 17, retrieved November 14, 2026.
CommunityRules and moderation
Events in QuincyAll events
No upcoming event is listed in Quincy yet. Members and businesses add events from the Events page; each is screened before it shows.
Schools
| School | Type | Grades | District |
|---|---|---|---|
| Colonel George Iles Elem Sch | Public | K–5 | Quincy SD 172 |
| Dr. Abby Fox Rooney Elem Sch | Public | K–5 | Quincy SD 172 |
| Early Childhood | Public | Pre-K–K | Quincy SD 172 |
| Sarah Atwater Denman Elem | Public | K–5 | Quincy SD 172 |
| Thomas S Baldwin Elem Sch | Public | K–5 | Quincy SD 172 |
| Quincy Jr High School | Public | 6–8 | Quincy SD 172 |
| Academic Behavior&Community Acad | Alternative | 7–12 | Adam/Brwn/Cass/Morgn/Pik/Sctt ROE |
| Adams Co Juvenile Detention Cntr | Alternative | 5–12 | Quincy SD 172 |
| Adams County RSSP | Alternative | 7–12 | Adam/Brwn/Cass/Morgn/Pik/Sctt ROE |
| Quincy Area Voc Ctr | Career and technical | 11–12 | Adam/Brwn/Cass/Morgn/Pik/Sctt ROE |
| Quincy Sr High School | Public | 9–12 | Quincy SD 172 |
Open public schools in the NCES directory for 2023–2024, placed by their listed location; private schools are not in the source. Enrollment and ratings are not shown.
Sources: NCES Common Core of Data, public school directory 2023–2024, retrieved November 14, 2026; NCES EDGE public school geocodes 2024–2025, retrieved November 14, 2026.
Legislative districts
| Chamber | District |
|---|---|
| U.S. House of Representatives | Congressional District 15 (IL-15) |
| State legislature, lower chamber | State House District 99 |
| State legislature, upper chamber | State Senate District 50 |
Boundaries from the Census Bureau’s TIGER/Line district files, matched to Quincy’s own boundary. Who holds each seat appears on the People page once the official records are approved.
Sources: Census cartographic boundaries 2025: congressional districts, 119th Congress, retrieved November 14, 2026; Census cartographic boundaries 2025: state legislative districts, upper chamber, state 17, retrieved November 14, 2026; Census cartographic boundaries 2025: state legislative districts, lower chamber, state 17, retrieved November 14, 2026.
Frequently asked about QuincyPromoted from questions people asked
No question about Quincy has been asked often enough to publish an answer yet. Ask Quincy and the answer, once a person checks it, appears here.
Nearby towns
- Melrose TownshipTownship
- Riverside TownshipTownship
- Ellington TownshipTownship
- BloomfieldCensus designated place
- BurtonCensus designated place
- FowlerCensus designated place
- Gilmer TownshipTownship
- Fall Creek TownshipTownship
- Burton TownshipTownship
- UrsaVillage
Other towns in Adams County
- AdamsCensus designated place
- Beverly TownshipTownship
- BeverlyCensus designated place
- BloomfieldCensus designated place
- Burton TownshipTownship
- BurtonCensus designated place
- Camp Point TownshipTownship
- Camp PointVillage
- Clayton TownshipTownship
- ClaytonVillage