Why Edwardsville, Kansas and Kansas City, Kansas are similar

Divided into 254 counties, more than any other U.S. state. Originally divided into municipalities , a unit of local government under Spanish and Mexican rule. Wikipedia

Independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, including its insular areas and associated states. One of the few government agencies explicitly authorized by the United States Constitution. Wikipedia

Culturally recognised union between people, called spouses, that establishes rights and obligations between them, as well as between them and their children, and between them and their in-laws. Considered a cultural universal, but the definition of marriage varies between cultures and religions, and over time. Wikipedia

Time zone in parts of Canada, the United States, Mexico, Central America, some Caribbean Islands, and part of the Eastern Pacific Ocean. Six hours behind Coordinated Universal Time (UTC). Wikipedia

Race and ethnicity in the United States Census, defined by the federal Office of Management and Budget (OMB) and the United States Census Bureau, are the self-identified categories of race or races and ethnicity chosen by residents, with which they most closely identify, and indicate whether they are of Hispanic or Latino origin (the only categories for ethnicity). The racial categories represent a social-political construct for the race or races that respondents consider themselves to be and, "generally reflect a social definition of race recognized in this country." Wikipedia

Principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. Part of the U.S. Department of Commerce and its director is appointed by the President of the United States. Wikipedia