The largest capital city in the United States is Phoenix, Arizona.
Phoenix not only serves as the capital of Arizona but also stands out as the most populous state capital in the country. With a population exceeding 1.7 million residents, it is known for its warm climate and extensive desert landscapes. Unlike many other capital cities, which are often smaller than the overall state population, Phoenix’s growth has been driven by its vibrant economy and attractive living conditions. The city is an essential hub for various industries and continues to expand, making it a unique blend of political importance and economic activity.