Barnstaple (/ˈbɑːrnstəbəl/ or /ˈbɑːrnstəpəl/) is a river-port town and civil parish in the North Devon district of Devon, England. The town lies at the River Taw's lowest crossing point before the Bristol Channel. From the 14th century, it was licensed to export wool from which it earned great wealth. Later it imported Irish wool, but its harbour silted up and other trades developed such as shipbuilding, foundries and sawmills. A Victorian market building survives, with a high glass and timber roof on iron columns.

The name is first recorded in the 10th century and is thought to derive from the Early English bearde, meaning "battle-axe", and stapol, meaning "pillar", i.e. a post or pillar to mark a religious or administrative meeting place. The derivation from staple meaning "market", indicating a market from its foundation, is likely to be incorrect, as the use of staple in that sense first appears in 1423.

Barnstaple was formerly referred to as "Barum", as a contraction of the Latin form of the name ad Barnastapolitum in Latin documents such as the episcopal registers of the Diocese of Exeter. The spelling Barnstable was also used for the town but is now obsolete, although that spelling is retained in America by a town in Massachusetts and its county, which were named after Barnstaple.

Barum is a historical name, which was revived in the Victorian era in several novels. It remains in the names of a football team, a brewery and several businesses, and on numerous milestones. The former Brannam Pottery in Litchdon Street was known for its trademark "Barum" etched on the base of its products.

The earliest local settlement was probably at Pilton by the River Yeo, now a northern suburb. Pilton is recorded in the Burghal Hidage (c. 917) as a burh founded by Alfred the Great, and may have undergone a Viking attack in 893, but by the later 10th-century Barnstaple had taken over its local defence. It had a mint before the Norman Conquest.

The feudal barony of Barnstaple had its caput at Barnstaple Castle, granted by William the Conqueror to Geoffrey de Montbray, who appears as its holder in the 1086 Domesday Book. The barony fell to the Crown in 1095 after Montbray rebelled against William II. He transferred the barony to Juhel de Totnes, a feudal baron of Totnes. By 1107 Juhel had founded Totnes Priory and then Barnstaple Priory, of the Cluniac order, dedicated to St Mary Magdalene. After Juhel's son died intestate, the barony was split between the de Braose and Tracy families, before reuniting under Henry de Tracy. It then passed through several families, before ending in the hands of Margaret Beaufort (died 1509), mother of King Henry VII.

A market is first recorded in 1274. The town's wealth in the Middle Ages rested on being a staple port licensed to export wool. It had an early merchant guild of St Nicholas. In the early 14th century it was Devon's third richest town after Exeter and Plymouth, and its largest textile centre outside Exeter until about 1600. The wool trade was aided by its port, from which five ships were contributed to a force sent to fight the Spanish Armada in 1588. Barnstaple was one of the "privileged ports" of the Spanish Company, (established 1577), whose armorials appear on two mural monuments to 17th-century merchants: Richard Beaple (died 1643), three times Mayor, and Richard Ferris (Mayor in 1632), who with Alexander Horwood received a payment from the Corporation of Barnstaple in 1630 for "riding to Exeter about the Spanish Company." in St Peter's Church, and on the decorated plaster ceiling of the old Golden Lion Inn, Boutport Street, now a restaurant beside the Royal and Fortescue Hotel.

The town benefited from rising trade with America in the 16th and 17th centuries, for the benefit of wealthy merchants who built impressive town houses. Some of these survive behind more recent frontages, for instance No. 62 Boutport Street, said to have one of the best plaster ceilings in Devon. The merchants also built almshouses, including Penrose's, and backed their legacy with elaborate family monuments inside the church.

By the 18th century, Barnstaple had ceased to be a woollen manufacturing town. Its output was replaced from Ireland, for which it was the main landing place; the raw materials were then taken by land to clothmaking towns in mid and east-Devon, such as Tiverton and Honiton. However, the harbour was silting up. As early as c. 1630 Tristram Risdon reported, "It hardly beareth small vessels." Bideford, lower down the estuary and benefiting from the scouring by the fast-flowing River Torridge, gradually took over the trade.

Although Barnstaple's trade in 1680–1730 was surpassed by Bideford's, it retained economic importance into the early 20th century, manufacturing lace, gloves, sail-cloth and fishing-nets, with extensive potteries, tanneries, sawmills and foundries, and some shipbuilding still carried on. The Bear Street drill hall dates from the early 19th century.

Between the 1930s and the 1950s the urban area grew to incorporate the villages of Pilton, Newport, and Roundswell through ribbon development.

There are three tiers of local government covering Barnstaple, at parish (town), district and county level: Barnstaple Town Council, North Devon Council (based just outside Barnstaple) and Devon County Council (based in Exeter). Barnstaple Town Council meets at the Guildhall on High Street and has its offices at Barum House on The Square.

Barnstaple was an ancient borough. Its early status as a borough was ambiguous; in 1340 the town's guild claimed it had been incorporated in 930 by King Athelstan in a charter which had since been lost. The town was described as a borough in the Domesday Book of 1086, and from at least 1210 the town was being run by a guild which appointed a mayor. The claim in 1340 was made as part of a petition to Edward III seeking a new charter with additional powers. This was resisted by the lord of the feudal barony of Barnstaple. Following an inquisition ad quod damnum it was ruled that the town was in fact a lower status mesne borough answerable to the lord, rather than a free borough responsible directly to the monarch. The mayor was therefore not recognised as such by the monarch, but was deemed to be merely a bailiff of the lord. The guild made several other unsuccessful attempts to secure a charter from the king throughout the fourteenth and fifteenth centuries, including seeking confirmation of rights supposedly conferred by charters from Henry II and subsequent monarchs, but those charters were forgeries, copied from Exeter's charters.

The town eventually secured a charter of incorporation from Mary I in 1557. The council built the Guildhall on High Street in 1828 to serve as its meeting place. It was reformed to become a municipal borough in 1836, governed by a corporate body officially called the "mayor, aldermen and burgesses of the borough of Barnstaple", but generally known as the corporation or town council. The borough boundaries, which had previously been identical to the parish of Barnstaple, were enlarged at the same time to include part of the parish of Pilton (including the village itself) and the Newport area from the parish of Bishop's Tawton. The borough was further enlarged in 1899 to take in the Rolle's Quay area from Pilton and an area on the west bank of the River Taw (including Barnstaple Junction railway station) which had previously been in the parish of Tawstock.

The town council moved its offices to Castle House in the grounds of the castle in 1927, which in turn was replaced by a new Civic Centre on North Walk in 1969. The borough of Barnstaple was abolished in 1974 under the Local Government Act 1972, with the area merging with Barnstaple Rural District, South Molton Rural District and the urban districts of Ilfracombe and Lynton to become the new district of North Devon. A successor parish was created covering the area of the former borough, with its council taking the name Barnstaple Town Council. The Civic Centre passed to North Devon Council, whilst the town council was initially based at the Guildhall. In 1993 the town council acquired Barum House on The Square to serve as its offices, but continues to use the Guildhall for meetings.

From 1295 the Borough of Barnstaple had two members in the House of Commons until 1885, when this was reduced to one. The constituency was replaced for the 1950 general election by the large modern constituency of North Devon, held by Nick Harvey MP of the Liberal Democrats from 1992 until 2015, when Peter Heaton-Jones of the Conservative Party was elected and re-elected in 2017. Between 2019 and 2024 the MP was the Conservative Selaine Saxby. Since 2024 the MP has been the Liberal Democrat Ian Roome.

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Barnstaple is the largest town in North Devon. It lies 68 miles (109 km) west-south-west of Bristol, 50 miles (80 km) north of Plymouth and 34 miles (55 km) north-west of the county town and city of Exeter. It was founded at the lowest crossing point of the River Taw, where its estuary starts to widen, about 7 miles (11 km) inland from Barnstaple Bay in the Bristol Channel. On the north side, the Taw is joined by the River Yeo, which rises on Berry Down near Combe Martin.

Most of the town lies on the east bank of the estuary, connected to the west by the ancient Barnstaple Long Bridge, with 16 arches. The town's early medieval layout still appears from the street plan and street names, with Boutport Street ("About the Port") following the curved line of a ditch outside the town walls. The area of medieval shipbuilding and repair is still called The Strand, an early word for shore.

Barnstaple has cool wet winters and mild wet summers. Mean high temperatures range from 9 C (48 F) in January to 21 C (70 F) in July. The record high is 34 C (94 F) and the record low −9 C (16 F). October is the wettest month with 103 mm (4.1 in) of rain. The mean annual rainfall is 862 mm (33.9 in), with rain on 138 days.

Barnstaple parish population in the 1801 census was 3,748, in 1901 9,698, and in 2001 22,497.

In 2011 the racial make-up was:

• White British 77.9%
• White Irish 0.3%
• Other White 2.6%
• Mixed race 2.2%
• Asian 1.6%
• Black 14.3%
• Other 0.1%

As a major town, Barnstaple has a similar ethnic make-up to other south-west towns such as Truro and Cullompton. It is more diverse than the North Devon district (95.9% White British) and Devon as a whole (94.2% White British).

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North Devon is some distance from Britain's traditional areas of industrial activity and population. In the late 1970s it gained several industrial firms due to the availability of central government grants for opening factories and operating them on low or zero levels of local taxation. This was scarcely successful, with few lasting beyond the few years that grants were available. One success was the manufacturing of generic medicines by Cox Pharmaceuticals (now branded Allergan), which moved in 1980 from a site in Brighton, Sussex. A lasting effect on the town has been the development and expansion of industrial estates at Seven Brethren, Whiddon Valley and Pottington.

Whilst the 1989 opening of the improved A361 connection to the motorway network assisted trade in ways such as weekend tourism, it was detrimental to some distribution businesses. These had previously seen the town as a base for local distribution, a need removed when travelling time to the M5 motorway was roughly halved.

With Barnstaple as the main shopping area for North Devon, retail work contributes to the economy. There are chain stores in the town centre and in the Roundswell Business Park, on the western fringe of the town. Multi-million pound redevelopment round the former Leaderflush Shapland works at Anchorwood Bank is creating a conservation area near the River Taw, hundreds of new homes, a retail area of shops, restaurants and leisure facilities.

By far the largest employer in the region is local and central government, particularly the Royal Marines Base Chivenor, 3 miles (5 km) west of the town, and North Devon District Hospital, 1 mile (1.6 km) to the north.

In 2005 unemployment in North Devon was 1.8–2.4 per cent, while median per capita wage for North Devon was 73 per cent of the UK national average. The level of work in the informal or casual sector is high, partly during seasonal tourism. By 2018 unemployment in North Devon had fallen from a 2010 high to 1.2 per cent, while median weekly full-time pay stood at £440 per week and average housing prices at £230,000. The number of businesses registered has risen by 370 since 2010 to 4,895. The year 2018 also saw government investment through Coastal Community grants and Housing Infrastructure funds £83 million to upgrade the North Devon Link Road.

Barnstaple is twinned with:

• Barnstable, Massachusetts, United States
• Uelzen, Germany
• Trouville-sur-Mer, France
• Susa, Piedmont, Italy
• Harstad, Norway

Barnstaple has an eclectic mix of architectural styles, with the 19th century predominant, despite remnants of early buildings and several early plaster ceilings. St Anne's Chapel in the central churchyard can be seen as the most important ancient building to survive. Queen Anne's Walk was erected in about 1708 as a mercantile exchange. The Georgian Guildhall is also of interest, as is the Pannier Market beneath it. The museum has an "arts and crafts" appearance with tessellated floors and locally made staircase and decorative fireplaces.

Barnstaple Castle, founded in the 11th or 12th century and first mentioned the 12th century, may derive from Juhel (Joel) of Totnes in the early 12th century. King Stephen granted the castle to Henry de Tracy, a supporter of his. In the 12th century, stone buildings were built over the motte, possibly during Henry de Tracy's tenure. The castle descended through his family to another Henry de Tracy, who held the castle in 1228 when Henry III ordered the Sheriff of Devon to make sure its walls did not exceed 10 feet (3.0 m) in height. By the death of the last Henry de Tracey in 1274, the castle had begun to decay. An inquisition of 1281 found that building materials had been removed from the castle without permission; by 1326 it was a ruin. Part of the castle walls blew down in a storm in 1601.

The Neo-Gothic Manor of Tawstock, originally Tawstock House, is two miles south of Barnstaple. It replaced an earlier Tudor mansion, built in 1574 but lost to a fire in 1787.

The Grade II listed St Anne's Chapel was restored in 2012 and is used as a community centre that can accommodate 60 people. It was an ancient Gothic chantry chapel, whose assets were acquired by the Mayor of Barnstaple and others in 1585, some time after the Dissolution of the Monasteries. A deed of feoffment dated 1 November 1585 exists in the George Grant Francis collection in Cardiff.