Adams County Map, Illinois

Written and Fact-checked by | Updated On: April 26, 2026 | 14:30 ET

Map of Adams County - Adams County is a county located in the U.S. state of Illinois. Adams County Map showing cities, highways, important places and water bodies. Get Where is Adams County located in the map, major cities in Adams county, population, areas, and places of interest.

Adams County Map, Illinois

Adams County Map, Illinois

About Adams County Map, Illinois: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.

Most Viewed Illinois Links

Illinois MapIllinois County MapIllinois Cities Map
Illinois Zip codesAirports in IllinoisWhere is Springfield
Illinois Area CodesIllinois Blank MapIllinois River Map
Illinois Physical MapIllinois Road MapWhere is Chicago

Adams County, Illinois

Adams County is a county located in the U.S. state of Illinois. It's county seat is Quincy. As per 2020 census, the population of Adams County is 64954 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 855 sq mi (2,214 km2). Adams County was established on 1825.

Facts about Adams County, Illinois

CountryUnited States
StateIllinois
RegionWestern Illinois
County SeatQuincy
Named AfterJohn Quincy Adams
Established1825
Organized1825
Coordinates39.99° N, 91.19° W
Total Area~871 sq mi
Land Area~855 sq mi
Water Area~16 sq mi
Population (2020)~65,737
Population RankMid-sized county in Illinois
Largest CityQuincy
Main IndustriesManufacturing, Healthcare, Agriculture, Education
Major RiverMississippi River
Time ZoneCentral Time (UTC−06:00)
Known ForHistoric Quincy architecture, riverfront, presidential heritage
Websitehttps://www.co.adams.il.us

Ctities in Adams county

City NameTypePopulation (2020)Pop. DensityArea
Camp PointVillage1,121988.5/sq mi (381.7/km2)1.134 sq mi (2.94 km2)
ClaytonVillage639722.9/sq mi (279.1/km2)0.884 sq mi (2.29 km2)
CoatsburgVillage1501,136.4/sq mi (438.8/km2)0.132 sq mi (0.34 km2)
ColumbusVillage114520.5/sq mi (201.0/km2)0.219 sq mi (0.57 km2)
GoldenVillage6481,009.3/sq mi (389.7/km2)0.642 sq mi (1.66 km2)
La PrairieVillage42217.6/sq mi (84.0/km2)0.193 sq mi (0.5 km2)
LibertyVillage5431,388.7/sq mi (536.2/km2)0.391 sq mi (1.01 km2)
LimaVillage1481,096.3/sq mi (423.3/km2)0.135 sq mi (0.35 km2)
LoraineVillage300355.5/sq mi (137.2/km2)0.844 sq mi (2.19 km2)
MendonVillage8721,017.5/sq mi (392.9/km2)0.857 sq mi (2.22 km2)
PaysonVillage1,025876.1/sq mi (338.3/km2)1.17 sq mi (3.03 km2)
PlainvilleVillage2711,153.2/sq mi (445.2/km2)0.235 sq mi (0.61 km2)
QuincyCity39,4632,503.2/sq mi (966.5/km2)15.765 sq mi (40.83 km2)
UrsaVillage609882.6/sq mi (340.8/km2)0.69 sq mi (1.79 km2)

Roads and Highways in Adams County, Illinois

Adams County is well-connected by a network of major highways that link it to nearby cities, the Mississippi River region, and surrounding counties.

  • Interstate 172 – runs east-west, connecting Quincy to Interstate 72 near Mendon
  • U.S. Route 24 – passes through the county, linking Quincy to Pittsfield and extending toward Indiana
  • Illinois Route 96 – runs north-south along the Mississippi River, connecting Quincy to Nauvoo
  • Illinois Route 57 – connects Quincy to Pittsfield through rural areas
  • Illinois Route 104 – runs east-west, linking Quincy to Springfield

Neighboring Counties of Adams County

  • Hancock County (north)
  • Brown County (east)
  • Pike County (south)
  • Marion County, Missouri (west)
  • Ralls County, Missouri (southwest)

Top Attractions in Adams County, Illinois

Adams County offers a mix of history, riverfront views, and cultural sites, especially centered around the city of Quincy.

  • Quincy Historic District – Known for its well-preserved 19th-century homes and architecture.
  • Villa Kathrine – A unique Moorish-style mansion overlooking the Mississippi River.
  • All Wars Museum – Showcases military artifacts and stories from various conflicts.
  • Quincy Museum – A local history museum housed in a historic mansion.
  • Washington Park – A popular green space with walking paths and seasonal events.
  • Mississippi Riverfront – Offers scenic views, walking trails, and picnic areas.
  • Quincy Art Center – Features regional art exhibits and creative programs.
  • South Park – A family-friendly park with playgrounds and open space.

Distance from Adams County to Nearby Cities

  • Quincy to Springfield – 105 mi (169 km)
  • Quincy to St. Louis – 115 mi (185 km)
  • Quincy to Peoria – 120 mi (193 km)
  • Quincy to Chicago – 275 mi (443 km)
  • Quincy to Kansas City – 200 mi (322 km)

FAQs about Adams County

Where is Adams County located?

Adams County is located in western Illinois along the Mississippi River, bordering the state of Missouri.

What is Adams County known for?

The county is known for its historic architecture, riverfront views, and the city of Quincy.

What is the largest city in Adams County?

Quincy is the largest city and serves as the county seat of Adams County.

Are there outdoor activities in Adams County?

Yes, the county offers parks, riverfront trails, and recreational areas for outdoor activities.

How can I reach Adams County?

Adams County can be reached via Interstate 172, U.S. Route 24, and several Illinois state highways.

Explore Map of Illinois Counties
US Counties Map by State
Treading Links
Most Viewed Links
Info World
World Sports

©2011-2026 Whereig.com