Puerto Rico senatorial district IV

Puerto Rico senatorial district IV, also known as the senatorial district of Mayagüez-Aguadilla, is one of the eight senatorial districts of Puerto Rico. It is currently represented by Ada García Montes and Migdalia González.

District profile
Senatorial district IV has an approximate population of 478,194. It covers the following municipalities:
 * Aguada
 * Aguadilla
 * Añasco
 * Cabo Rojo
 * Hormigueros
 * Isabela
 * Las Marías
 * Mayagüez
 * Moca
 * Rincón
 * San Germán
 * San Sebastián

In previous distributions, the territory covered by senatorial district IV has changed. In 1972 and 1983, the district included the municipalities of Lajas and Maricao. In the 1991 redistribution, both were assigned to the district of Ponce, while Isabela was reassigned to the district.

The district hasn't suffered changes in the recent redistributions of 2002 and 2011.