Puerto Vallarta is a Mexican balneario resort city situated on the Pacific Ocean's Bahía de Banderas. The 2010 census reported Puerto Vallarta's population as 255,725 making it the second largest city in the state of Jalisco. The City of Puerto Vallarta is the government seat of the Municipality of Puerto Vallarta which comprises the city as well as population centers outside of the city extending from Boca de Tomatlán to the Nayarit border (the Ameca River).
The city is located at 20°40′N 105°16′W. The municipality has an area of 502.19 square miles (1,300.7 km2). To the north it borders the southwest part of the state of Nayarit. To the east it borders the municipality of Mascota and San Sebastián del Oeste, and to the south it borders the municipalities of Talpa de Allende and Cabo Corriente.