Henry County, Illinois

Henry County
Henry County Courthouse
Map of Illinois highlighting Henry County
Location within the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
Coordinates: 41°21′N 90°08′W / 41.35°N 90.14°W / 41.35; -90.14
Country United States
State Illinois
FoundedJanuary 13, 1825
Named forPatrick Henry
SeatCambridge
Largest cityKewanee
Area
 • Total
826 sq mi (2,140 km2)
 • Land823 sq mi (2,130 km2)
 • Water2.7 sq mi (7 km2)  0.3%
Population
 (2020)
 • Total
49,284
 • Estimate 
(2023)
48,448 Decrease
 • Density60/sq mi (23/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional districts16th, 17th
Websitewww.henrycty.com

Henry County is a county located in the U.S. state of Illinois. The 2020 United States Census, listed its population at 49,284.[1] Its county seat is Cambridge.[2] Henry County is included in the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.[3]

  1. ^ "Henry County, Illinois". United States Census Bureau. Retrieved June 9, 2023.
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  3. ^ United States Office of Management and Budget. "Update of Statistical Area Definitions and Guidance on Their Uses" (PDF). pp. 5, 36. Archived from the original (PDF) on May 14, 2006. Retrieved July 21, 2006.