However, Trujillo has been influential to nearby cities for decades, having great interaction with them.

An aerial photograph from the satellite shows a single urban area where it is difficult to distinguish the boundaries of Trujillo and its conurbation metropolitan districts, virtually separated only administratively.

The Planning of Peruvian metropolitan areas are made, by the government of municipalities of each city, with authority granted by Organic Law of Municipalities, and they have the support of an expert office for urban planning with specific functions.

Wherefore officially valid data about districts conformation for metropolitan areas in Peru are those issued by official documents issued and validated by the respective municipal governments of each city under the law that local governments are autonomous political, economic and administrative matters within its jurisdiction and its powers according to the law of municipalities, an attribution of these is to approve the urban development plan.

According to PLANDET, agency of the Municipality of the city, Metropolitan Trujillo consists of the so-called Trujillo Urban Continuum formed by the districts of Trujillo, El Porvenir, Florencia de Mora, La Esperenza and Victor Larco Herrera, and the sector El Milagro of Huanchaco District, as well as all urban and rural settlements in the valley of Santa Catalina, the Moche river basin, which correspond to the districts of Huanchaco, Laredo, Moche and Salaverry, organized as a unit of planning.