Find schools and get information on the program that’s right for you.
Powered by Campus Explorer
Stephenson County is a county located in the state of Illinois. According to the 2010 census, it had a
population of 47,711. Stephenson County was
created on March 4, 1837. The county
seat is Freeport. The county is named
for Benjamin Stephenson (1769-1822), representative of Illinois
Territory in the United States Congress from 1814 to 1816.
Stephenson County is included in the Freeport, IL Micropolitan Statistical Area, which is also included in the Rockford-Freeport-Rochelle, IL Combined Statistical Area.
The county is named for Colonel Benjamin Stephenson, Adjutant General of the Illinois Territory (1813-1814).
County QuickFacts: CensusBureau Quick Facts
Stephenson County was created on March 4, 1837 (Laws, 1837, p. 96) and was formed from Jo Daviess and Winnebago
Counties. Present area, or parts of it, formerly included in: JoDaviess County (1826-1837), Winnebago County
(1836-1837), Putnam County (1825-1826), Fulton County (1823-1825), Pike County (1821-1823), Bond County (1817-1821),
Madison County (1812-1821) and St. Clair County (1801-1812).
The County was named for Benjamin Stephenson, prominent pioneer, a Colonel of the Territorial militia, and Adjutant General of the Territory (1813-1814). The County Seat is Freeport (1837-Present).
As reported by the Census Bureau, the county has a total area of 565 square miles (1,463 km2), of which, 564 square miles (1,461 km2) of it is land and 1 square miles (1 km2) of it (0.10%) is water.
Stephenson county is located in north Illinois. Lake Le-Aqua-Na State
Park is located in this county.
Bordering counties are as follows: