Whiteside County is located in the U.S. state of Illinois. The county seat is Morrison. The county is bounded on the west by the Mississippi River.

The county government is based in the Whiteside County Courthouse in Morrison. The county is divided into twenty-two townships which provide local services.

The county is governed by a seven-member County Board, elected from single-member districts. The board members serve four-year terms. The board sets policy and approves the budget. The County Board is the legislative body of the county government and has limited authority to make laws or ordinances.

The county is also served by a number of elected officials, including a Sheriff, State's Attorney, Coroner, and Circuit Clerk. The county also has a number of appointed officials, including a County Administrator, County Clerk, and Treasurer.

The county is part of the Sauk Valley Region, which includes the cities of Sterling, Rock Falls, and Dixon. The county is also part of the Quad Cities Metropolitan Area, which includes the cities of Moline, East Moline, Rock Island, and Davenport in Iowa.

For the most up-to-date and in-depth information, please check the public records links below.