Macoupin County is located in the central part of Illinois. It is bordered by Montgomery, Christian, Madison, Jersey, Greene, and Sangamon counties. The county seat is Carlinville. The county has a total area of 819 square miles, making it the fourth largest county in Illinois.

Macoupin County is governed by a seven-member Board of Commissioners. The board is elected from seven districts within the county. The board is responsible for setting policy, approving the budget, and overseeing the county's departments.

The county is also served by a state's attorney, sheriff, coroner, and treasurer.

The county is home to several state parks, including Silver Lake State Park, Pere Marquette State Park, and the Macoupin County Conservation Area.

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