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Stephenson County, Illinois

Stephenson County
Stephenson County Courthouse
Map of Illinois highlighting Stephenson County
Location within the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
Coordinates: 42°21′N 89°40′W / 42.35°N 89.67°W / 42.35; -89.67
Country United States
State Illinois
Founded1837
Named forBenjamin Stephenson
SeatFreeport
Largest cityFreeport
Area
 • Total
565 sq mi (1,460 km2)
 • Land565 sq mi (1,460 km2)
 • Water0.5 sq mi (1 km2)  0.09%
Population
 (2020)
 • Total
44,630
 • Estimate 
(2023)
43,105 Decrease
 • Density79/sq mi (30/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional districts16th, 17th
Websitewww.co.stephenson.il.us

Stephenson County is a county located in the U.S. state of Illinois. According to the 2020 United States Census, it had a population of 44,630.[1] Its county seat is Freeport.[2] Stephenson County is included in the Freeport, IL Micropolitan Statistical Area, which is also included in the Rockford-Freeport-Rochelle, IL Combined Statistical Area.

  1. ^ "QuickFacts". United States Census Bureau. Retrieved January 23, 2021.
  2. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.

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