Abandoned City San Zhi, Taiwan

In all the New England states, city status is conferred by the form of government, not population. Town government has a board of selectmen or Town Council for the executive branch, and a town meeting for the legislative branch, but unlike the US Government, the executive acts only as an administrative body and cannot override the will of town meeting. New England cities, on the other hand, have a mayor for the executive, and a legislature referred to as either the city council or the board of aldermen.
In Virginia, all incorporated municipalities designated as cities are independent of the adjacent or surrounding county while a town is an incorporated municipality which remains a part of an adjacent or surrounding county. The largest incorporated municipalities by population are all cities, although some smaller cities have a smaller population than some towns. For example, the smallest city of Norton has a population of 3,904 and the largest town of Blacksburg has a population of 39,573. The other U.S. independent cities are Baltimore, Maryland; St. Louis, Missouri; and Carson City, Nevada.
In Pennsylvania, municipalites with more than 10 persons can incorporate as a borough. Any township or borough with a population of at least 10,000 can ask the state legislature to charter as a city. In Pennsylvania, a village is simply an unincorporated community within a township. Parker, Pennsylvania is known as the smallest city in the United States.
Minnesota, has a city population of 200,000 to 500,000 with subsidiaries as low as 50,000 with many non-appropriated assembled towns and counties with decrepit representations.