A county town is a county's administrative centre in the United Kingdom or Ireland. County towns are usually the location of administrative or judicial functions, or established over time as the de facto main town of a county. The concept of a county town eventually became detached from its original meaning of where the county administration is based (see County halls below). In fact, many county towns are no longer part of "their" administrative county. For example, Nottingham is administered by a unitary authority entirely separate from the rest of Nottinghamshire. Many county towns are in fact cities, but all are referred to as county towns irrespective of whether city status is held or not.

This list shows county towns prior to the reforms of 1889. For 1889 and later see the section below

This list shows county towns prior to the reforms of 1889. For 1889 and later see the "County Halls" section below

Note - Despite the fact that Belfast is the capital of Northern Ireland, it is not the county town of any county. Greater Belfast straddles two counties (Antrim and Down).

Van Morrison, OBE (born George Ivan Morrison; 31 August 1945) is a Northern Irish singer-songwriter and musician. His live performances at their best are regarded as transcendental and inspired; while some of his recordings, such as the studio albums Astral Weeks and Moondance, and the live album It's Too Late to Stop Now, are widely viewed as among the greatest ever made.

Known as "Van the Man" to his fans, Morrison started his professional career when, as a teenager in the late 1950s, he played a variety of instruments including guitar, harmonica, keyboards and saxophone for various Irish showbands covering the popular hits of the day. He rose to prominence in the mid-1960s as the lead singer of the Northern Irish R&B band Them, with whom he recorded the garage band classic "Gloria". His solo career began under the pop-hit oriented guidance of Bert Berns with the release of the hit single "Brown Eyed Girl" in 1967. After Berns' death, Warner Bros. Records bought out his contract and allowed him three sessions to record Astral Weeks in 1968. Even though this album would gradually garner high praise, it was initially poorly received; however, the next one, Moondance, established Morrison as a major artist, and throughout the 1970s he built on his reputation with a series of critically acclaimed albums and live performances. Morrison continues to record and tour, producing albums and live performances that sell well and are generally warmly received, sometimes collaborating with other artists, such as Georgie Fame and The Chieftains. In 2008 he performed Astral Weeks live for the first time since 1968.