There are 10 metropolitan areas in Romania that have been constituted as of 2013.
The current legislation in Romania regulates the status of the 265 cities according to their population and regional importance:
Legislation also restricts the possibility to engage into a metropolitan area project to only those cities that are of rank 0 or I. Here is a list of the municipalities that as of 2007 can for metropolitan areas around them with approximate populations. Only three zones have been officially constituted by the end of 2007: Oradea, Iasi and Constanta. At least 9 others are at the level of project.
*Timișoara and Arad intend to form the Arad–Timișoara Conurbation.
In the EU, a Functional Urban Area (FUA) - formerly known as larger urban zone (LUZ) - consists of a city and its commuting zone.