Title: Northumberland
Content:  Northumberland is a ceremonial county, historic county, and unitary authority in North East England. The latter has a headquarters at Morpeth. Northumberland borders Cumbria to the west, County Durham to the south, Newcastle upon Tyne and North Tyneside to the south and southeast, and the Scottish Borders to the north. The historic county town is Alnwick. Northumberland is a predominantly rural county, with the lowest population density of any county in England. The largest settlement in the county is the town of Blyth. The North Sea to the east of the county runs 103 km along its coastline. Lying south of the Anglo-Scottish border, Northumberland has been the site of a number of historic battles. The county is noted for its undeveloped landscape of high moorland, now largely protected as 
Title: Northumberland, New York
Content:  Northumberland is a town in Saratoga County, New York, United States. The population was 4,603 at the 2000 census. The name comes from a location in Great Britain. The Town of Northumberland is at the county's eastern border and northeast of Saratoga Springs.
Title: Northumberland, Pennsylvania
Content:  Northumberland is a borough in Northumberland County, Pennsylvania, United States. The population was 3,804 at the 2010 census.
Title: Northumberland County, New Brunswick
Content:  Northumberland County is located in northeastern New Brunswick, Canada.
Title: Northumberland, New Hampshire
Content:  Northumberland is a town located in western Coös County, New Hampshire, U.S., north of Lancaster. It is part of the Berlin, NH&ndash;VT micropolitan statistical area. As of the 2020 census, the town population was 2,126, of whom 1,068 lived in the village of Groveton.
Title: Northumberland County, Virginia
Content:  Northumberland County is a county located in the Commonwealth of Virginia. As of the 2020 census, the population sits at 11,839. Its county seat is Heathsville. The county is located on the Northern Neck and is part of the Northern Neck George Washington Birthplace AVA winemaking appellation.
Title: Northumberland County, Ontario
Content:  Northumberland County is an upper-tier level of municipal government situated on the north shore of Lake Ontario, east of Toronto in Central Ontario. The Northumberland County headquarters are located in Cobourg.
Title: Northumberland County Council
Content:  Northumberland County Council is a unitary authority in North East England. The population of the non-metropolitan unitary authority at the 2011 census was 316,028.
Title: Northumberland
Content:  Northumberland is a unitary authority area and is the largest unitary area in England. The County Council is based in Morpeth. Like most English shire counties Northumberland had until April 2009 a two-tier system of local government, with one county council and six districts, each with their own district council, responsible for different aspects of local government. These districts were Blyth Valley, Wansbeck, Castle Morpeth, Tynedale, Alnwick and Berwick-upon-Tweed. The districts were abolished on 1 April 2009, the county council becoming a unitary authority. Elections for the new unitary authority council first took place on 1 May 2008. The County Council elections in 2021 returned the following results:
Title: Northumberland County, New South Wales
Content:  Northumberland County was one of the original Nineteen Counties in New South Wales and is now one of the 141 Cadastral divisions of New South Wales. It included the area to the north of Broken Bay, including Lake Macquarie and Newcastle. It was bounded by the part of the Hawkesbury River to the south, the Macdonald River to the south-west, and the Hunter River to the north. Northumberland County was named after the English Northumberland, and named by Lieutenant Charles Menzies, commandant at Newcastle, about 1804. In 1852 it had an area of 1498060 acre and population of 15,207, and was described as being 68 mi long and 53 mi wide and the main coal region of the colony. Between 21 July 1948 and 19 December 1963, the county had a local government, the Northumberland County Council, which was abolished at the same time as the Cumberland County Council.

Question: What is the capital of Northumberland County?
Answer: Sunbury.
Sunbury, Pennsylvania.