Tazewell County, Illinois

Tazewell County, Illinois
Location within the U.S. state of Illinois
Coordinates: 40°31′N 89°31′W / 40.51°N 89.51°W / 40.51; -89.51
Country United States
State Illinois
Founded1827
Named afterLittleton Waller Tazewell
SeatPekin
Largest cityPekin
Area
 • Total
658 sq mi (1,700 km2)
 • Land649 sq mi (1,680 km2)
 • Water9.0 sq mi (23 km2)  1.4%
Population
 (2020)
 • Total
131,343
 • Estimate 
(2024)
129,821
 • Density202/sq mi (78.1/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional districts16th, 17th
Websitewww.tazewell.com

Tazewell County (/ˈtæzwɛl/) is located in the U.S. state of Illinois. According to the 2020 census, it had a population of 131,343. Its county seat and largest city is Pekin. It is pronounced with a short "a", to rhyme with "razz" rather than "raze."

Tazewell County is part of the Peoria metropolitan area. The majority of the population lives along the county's western border.