The United States is commonly divided into four census regions, each with distinct states and geographic character:
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont.
Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin.
Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, West Virginia.
Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wyoming.
These regional groupings are used for statistical, cultural, and administrative purposes, reflecting the nation's vast geographic and demographic diversity.