Municipalities ("municipios" in Spanish) and boroughs ("delegaciones" in Spanish) are incorporated places in Mexico, that is, second or third-level political divisions with internal autonomy, legally prescribed limits, powers and functions. In terms of second-level political divisions there are 2,438 municipalities and Mexico and 16 semi-autonomous boroughs (all within the Federal District). A municipality can be constituted by one or more cities one of which is the "cabecera municipal" (municipal seat). Cities are usually contained within the limits of a single municipality, with a few exceptions in which small areas of one city may extend to other adjacent municipalities "without" incorporating the city which serves as the municipal seat of the adjacent municipality. Some municipalities or cities within municipalities are further divided into "delegaciones" or boroughs. However, unlike the boroughs of the Federal District, these are third-level administrative divisions; they have very limited autonomy and no elective representatives.