Derby

Derby
Sadler Gate
Cathedral Quarter
Arboretum Park
Motto: 
Latin: Industria, Virtus et Fortitudo, lit.'Energy, Power and Strength'
Shown within Derbyshire
Coordinates: 52°55′29″N 1°28′41″W / 52.9247°N 1.4780°W / 52.9247; -1.4780
OS grid referenceSK 3518 3649
Sovereign stateUnited Kingdom
Constituent countryEngland
RegionEast Midlands
Shire countyDerbyshire
Combined AuthorityEast Midlands
Settled600
City status1977
Unitary authority1997
Administrative HQCouncil House, Derby
Areas of the city
(2011 census BUASD)
Government
 • TypeUnitary authority with leader and cabinet
 • BodyDerby City Council
 • ControlNo overall control
 • LeaderNadine Peatfield (L)
 • MayorGed Potter
 • Chief ExecutivePaul Simpson
 • House of Commons
Area
 • Total
78 km2 (30 sq mi)
 • Rank221st
Population
 (2024)
 • Total
274,149
 • Rank67th
 • Density3,514/km2 (9,100/sq mi)
DemonymDerbeian
Ethnicity (2021)
 • Ethnic groups
List
Religion (2021)
 • Religion
List
Time zoneUTC+0 (GMT)
 • Summer (DST)UTC+1 (BST)
Postcode area
DE1, 3, 21–24, 73
Dialling code01332
ISO 3166 codeGB-DER
GSS codeE06000015
ITL codeTLF11
GVA2021 estimate
 • Total£7.5 billion
 • Per capita£28,627
GDP (nominal)2021 estimate
 • Total£8.4 billion
 • Per capita£32,025
Websitederby.gov.uk

Derby (/ˈdɑːrbi/ DAR-bee) is a cathedral city and unitary authority area on the River Derwent in Derbyshire, England. Derbyshire is named after Derby, which was its original county town. As a unitary authority, Derby is administratively independent from Derbyshire County Council. The population of Derby is 274,149 (2024).

The Romans established the town of Derventio, which was later captured by the Anglo-Saxons and then by the Vikings who made Djúra-bý one of the Five Boroughs of the Danelaw. Initially a market town, Derby grew rapidly in the industrial era and was home to Lombe's Mill, an early British factory and it contains the southern part of the Derwent Valley Mills World Heritage Site. With the arrival of the railways in the 19th century, Derby became a centre of the British rail industry. Despite having a cathedral since 1927, Derby did not gain city status until 1977.

Derby is a centre for advanced transport manufacturing. It is home to engine manufacturer Rolls-Royce and Alstom (formerly Bombardier Transportation) has a production facility at the Derby Litchurch Lane Works; Toyota's UK headquarters is located in the south-west of the city at Burnaston.