Illinois is a U.S. state that can be found in the Midwest. It is the largest of the Midwestern states, and the principle reason for this is the city of Chicago, one of the largest and most well known cities in the U.S. Unlike many states in the Midwest, Illinois is highly diverse in terms of population. It has an even balance between rural and urban area, and it is also diversified economically. One of the biggest industries in Illinois is transportation, and this industry has been prominent for well over 100 years. While the largest city in this state is Chicago, the capital is Springfield. The total population is 12.4 million, and Illinois was admitted to the Union in December of 1818. Illinois was an advent supporter of the Union during the Civil War, and this state is a popular center for jazz.

Prior to the arrival of Europeans, Illinois was home of the Cahokian Native American civilization. While this civilization was one of the most advanced in the Continental United States, it vanished by AD 1500. The GSP for Illinois in 2005 was $522 billion, placing it in the top 10 of the most wealthiest states in the U.S. Like New York City's impact on its state, a great deal of success for Illinois comes from Chicago, a major city that is the Illinois equivalent of New York City. The state income tax stand at about 3%, but the property taxes are quite high. When it comes to agriculture, Illinois is a prominent producer of wheat, cattle, and dairy products. The industrial sector produces are great deal of electrical equipment and chemical products.

The Illinois White Pages Phone Directory Database includes residential phone and address data for the state of Illinois. These listings are updated on a 90 day basis to contain the freshest possible phone directory data.