Quincy is a city in Adams County, Illinois, home to about 39,109 people across 16 square miles. Its ZIP codes are 62301 and 62305.
Homes sold for a median of $127 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Quincy
Mostly Quincy; also Burton and Bloomfield
Each card is that ZIP code’s whole market, including any part outside Quincy. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Quincy’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | St. Louis Lambert International Airport (STL)98 miles away |
|---|---|
| Closer regional airport | Quincy Regional Airport Baldwin Field (UIN)8 miles away |
| Nearest city of 250,000+ | St. Louis, MO108 miles away |
| Nearest city of 1 million+ | Chicago, IL232 miles away |
Straight-line distances from the center of Quincy; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Quincy had 39,463 residents in the 2020 census, down 2% since 2000.
It’s the 44th largest of 1,450 towns in Illinois by population.
Adams County grew from 67,058 residents in 1900 to 65,737 in 2020.
Adams County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 87°F in summer, and winter lows average 19°F. About 36.5 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Quincy Dam 21, IL weather station (5 miles away).
31,699 jobs at 1,787 businesses in Adams County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
986 doctors and other health care providers list an office in Quincy’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 152 |
|---|---|
| Specialist doctors | 189 |
| Dentists | 53 |
| Nurse practitioners and physician assistants | 162 |
| Mental health providers | 259 |
| Physical and occupational therapists | 118 |
| Optometrists | 21 |
| Chiropractors | 32 |
| Pharmacies | 13 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (13 nearby)
Grocery stores (4 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Counts are within about 3 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1819.
Colleges and universities
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Quincy SD 172, Adam/Brwn/Cass/Morgn/Pik/Sctt ROE. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Early ChildhoodQuincy | Pre-K–K | 434 | Public | 3.0 mi |
| Colonel George Iles Elem SchQuincy | K–5 | 535 | Public | 3.2 mi |
| Dr. Abby Fox Rooney Elem SchQuincy | K–5 | 500 | Public | 0.7 mi |
| Lincoln-Douglas Elementary SchoolQuincy | K–5 | 588 | Public | 3.1 mi |
| Sarah Atwater Denman ElemQuincy | K–5 | 501 | Public | 2.1 mi |
| Thomas S Baldwin Elem SchQuincy | K–5 | 564 | Public | 1.2 mi |
| Adams Co Juvenile Detention CntrQuincy | 5–12 | — | Alternative Education | 1.1 mi |
| Quincy Jr High SchoolQuincy | 6–8 | 1,295 | Public | 2.5 mi |
| Academic Behavior&Community AcadQuincy | 7–12 | — | Alternative Education | 2.4 mi |
| Adams County RSSPQuincy | 7–12 | — | Alternative Education | 2.4 mi |
| Quincy Sr High SchoolQuincy | 9–12 | 1,847 | Public | 1.0 mi |
| Quincy Area Voc CtrQuincy | 10–12 | — | Career and Technical | 1.2 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Blessed Sacrament Catholic SchoolQuincy | Pre-K–8 | 182 | Roman Catholic | 3.3 mi |
| St Dominic Elementary SchoolQuincy | Pre-K–8 | 165 | Roman Catholic | 0.2 mi |
| St Francis SolanusQuincy | Pre-K–8 | 212 | Roman Catholic | 2.0 mi |
| St James Lutheran SchoolQuincy | Pre-K–8 | 94 | Lutheran Church–Missouri Synod | 2.6 mi |
| St Peter SchoolQuincy | Pre-K–8 | 430 | Roman Catholic | 1.5 mi |
| ChaddockQuincy | 1–12 | 102 | Nonsectarian | 1.6 mi |
| Transitions SchoolQuincy | 1–12 | 15 | Nonsectarian | 3.0 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Burton and Bloomfield.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.