Nebraska (Nebraska -- NE) is in the Midwest of the United States, where the terrain is dominated by high plains. The state has a land area of 200,000 square kilometers and a population of about 1.65 million. The plain-dominated terrain makes the state's agriculture very developed. Nebraska's industry also revolves around agriculture. For example, it has a developed slaughtering industry that delivers beef and products to all parts of the United States. The region is also rich in oil and natural gas resources. In terms of transportation, airports, highways, railways and other facilities are relatively developed. The capital of the state is Lincoln. After the assassination of former US President Lincoln, the city's name was changed to Lincoln. There are more than 100 airports in the state. The zip code for Lincoln, Nebraska is 68501-68588.