Manhattan is the most densely populated of the five boroughs of New York City. The borough is coterminous with New York County, an original county of the U.S. state of New York. Wikipedia

Phoenix is the capital, and largest city, of the State of Arizona. With 1,445,632 people, Phoenix is the most populous state capital in the United States, as well as the sixth most populous city nationally, after New York, Los Angeles, Chicago, Houston, and Philadelphia. Wikipedia