At the moment, Express has store locations in 46 states. The only states that do not have any Express stores as of 2015 are Alaska, Montana, North Dakota and Wyoming.
Express has store locations in the following states: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia and Wisconsin.
However, the number of stores in each state varies immensely. South Dakota has a single Express store in Sioux Falls, while California has 75 locations. This is due to a wide variety of factors, such as commercial opportunities and brand appeal in certain areas. For example, states such as California and New York, have very large populations, which makes it easier to find customers. These states are also very urban and generally command higher standards of living than more rural areas, which creates a market for premium goods.
Additionally, it's possible more people in certain areas are simply more interested in Express' clothing than in others. As such, Express is more likely to maintain or expand its stores in states where more people desire its products.