New Hampshire is in the northeastern region of the United States. The state has a land area of 24,097 square kilometers and a population of about 850,000. The state's capital is Concord. 80% of the state's land is forested, with lush vegetation, so hardwood is produced here. The largest city in New Hampshire is Manchester, which has the same name as Manchester in the United Kingdom. The abbreviated zip code for New Hampshire is NH and the area code is 603. The postcodes of major cities are as follows: Manchester is 03101, 03102, 03103, 03104, 03105, 03107, 03108, 03109, 03111; Nashua is 03060, 03061, 03062, 03063, 03064; The postcodes for Portsmouth are 03801, 03802, 03803, 03804.