Heroica Nogales, better known as Nogales, is a city on the northwest border of the Mexican state of Sonora, head of the municipality of the same name. It limits towards the north with the city of Nogales, Arizona. The municipality has a population of 233,952 inhabitants, which makes it the third most populated municipality in Sonora with 8.3% of the total population of the state. Much of the population growth in recent decades is due to the arrival of the maquiladora industry accentuated even more by NAFTA. In 2004 the total brutal production of the Industry was approximately double that of the service sector and about four times more than that of commerce.