There are no official definitions of city, town, village, hamlet, neighborhood, etc. All named entities with human habitation are classified as Populated Place, including incorporated places (20 percent of the Nation's communities), unincorporated places (the majority), housing developments not yet incorporated, and neighborhoods within incorporated places.
The most frequently occurring community name varies through the years. In a past year, it was "Midway" with 212 occurrences and "Fairview" in second with 202. More recently, "Fairview" counted 288 and "Midway" 256. The name "Springfield" is often thought to be the only community name appearing in each of the 50 States, but at last count it was in only 34 states. The most recent count shows "Riverside" with 186 occurrences in 46 States; only Alaska, Hawaii, Louisiana, and Oklahoma not having a community so named.