Arizona’s largest city is a sprawling metropolis filled with licenses and permits. An entrepreneur in Phoenix will find no shortage of application to complete at city, county, state and sometimes federal levels of government. Fortunately, Phoenix and Arizona have clear forms and instructions making the process manageable. Phoenix is the sixth largest city in the United States with a population of more than 1.5 million residents and an extended metropolitan population of more than 4.4 million residents. Business costs are lower in Phoenix than in any other major metropolitan area in the United States. Phoenix industry is particularly well developed in the aerospace, bioscience, IT, software development, and renewable energy sectors.