States and Equivalent Entities are the primary governmental divisions of the United States. In addition to the 50 states, the Census Bureau treats the District of Columbia, Puerto Rico, American Samoa, the Commonwealth of the Northern Mariana Islands, Guam, and the U.S. Virgin Islands as the statistical equivalents of states for the purpose of data presentation.

In its online database, IECAM reports data for the state of Illinois with and without the City of Chicago.

Illinois State count
The total number, for the selected data, for the state of Illinois, including the City of Chicago.

Illinois State count without Chicago
The total number, for the selected data, for the state of Illinois, excluding the City of Chicago.

Source of definition: U.S. Census Bureau, Geography Division. Geographic Terms and Concepts – State or Statistically Equivalent Entity.