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Learn about the history, geography, politics and demographics of the most populous county in New Hampshire. Hillsborough County has two county seats, Manchester and Nashua, and is part of the Boston-Worcester-Providence metropolitan area.
Hillsborough County was one of the five original counties created by this act. The County began to execute its legal authority on March 19, 1771, when approval was received from the King of England. The original jurisdiction of the County included 13 towns that are now in Merrimack County.
Hillsborough County, NH (herein named “County”) provides the hcnh.org website as a service to the public. The County is not responsible for, and expressly disclaims all liability for, damages of any kind arising out of use, reference to, or reliance on any information contained within this website.
Hillsborough is a town in Hillsborough County, New Hampshire, United States, and the birthplace of Franklin Pierce, the 14th president. The town has a population of 5,939, a historic center, and several villages and forests.
Hillsborough County, NH (herein named “County”) provides the hcnh.org website as a service to the public. The County is not responsible for, and expressly disclaims all liability for, damages of any kind arising out of use, reference to, or reliance on any information contained within this website.
Hillsborough County is the most populous county in the U.S. state of New Hampshire. As of the 2020 census, the population was 422,937, almost one-third the population of the entire state. Its county seats are Manchester and Nashua, the state's two biggest cities.
Hillsborough, county, southern New Hampshire, U.S., bordered to the south by Massachusetts. It is a hilly upland region drained by the Merrimack, Piscataquog, and other rivers and dotted with numerous small lakes, including Franklin Pierce Lake and Powder Mill Pond.
