Rhode Island is the smallest state in the United States, located in the northeastern part of the United States. The state is located in the northeastern region of the United States, with a land area of 4,005 square kilometers and a population of 1.11 million. The western part of the state is the Atlantic Ocean with a long coastline. The economy of the state is mainly based on services and manufacturing. In the past, straw hats were produced. Now, industrial products including electronic products, navigation equipment, and medical equipment have been manufactured. Due to the gems produced, the gem processing industry is also very developed. The area code for Rhode Island is 401, the abbreviated zip code is RI, and the zip codes for major cities are as follows: Providence 02901-02940; Newport 02840-02841.