The word borough derives from the Old English word burg, burh, meaning a fortified settlement; the word appears as modern English bury, -brough, Scots burgh, borg in Scandinavian languages, Burg in German.

A number of other European languages have cognate words that were borrowed from the Germanic languages during the Middle Ages, including brog in Irish, bwr or bwrc, meaning "wall, rampart" in Welsh, bourg in French, burg in Catalan (in Catalonia there is a town named Burg), borgo in Italian, burgo in Portuguese, Galician and Castilian (hence the castilian place-name Burgos, galician place-names O Burgo and Malburgo), the -bork of Lębork and Malbork in Polish and the -bor of Maribor in Slovenian.

The 'burg' element, which means "castle" or "fortress", is often confused with 'berg' meaning "hill" or "mountain" (cf. iceberg, inselberg). Hence the 'berg' element in Bergen or Heidelberg relates to a hill, rather than a fort. In some cases, the 'berg' element in place names has converged towards burg/borough; for instance Farnborough, from fernaberga (fern-hill).

In Australia, the term "borough" is an occasionally used term for a local government area. Currently there is only one borough in Australia, the Borough of Queenscliffe in Victoria, although there have been more in the past. However, in some cases it can be integrated into the council's name instead of used as an official title, such as the Kingborough Council in Tasmania.
In Quebec, the term borough is generally used as the English translation of arrondissement, referring to an administrative division of a municipality, or a district. Eight municipalities are divided into boroughs: See List of boroughs in Quebec.

In Ontario, it was previously used to denote suburban municipalities in Metropolitan Toronto, including Scarborough, York, North York and Etobicoke prior to their conversions to cities. The Borough of East York was the last Toronto municipality to hold this status, relinquishing it upon becoming part of the City of Toronto government on January 1, 1998.
The Colombian municipalities are subdivided into boroughs (English translation of the Spanish term localidades) with a local executive and an administrative board for local government. These boroughs are divided into neighborhoods.
There are four borough districts designated by the Local Government Reform Act 2014: Clonmel, Drogheda, Sligo, and Wexford. A local boundary review reporting in 2018 proposed granting borough status to any district containing a census town with a population over 30,000; this would have included the towns of Dundalk, Bray, and Navan. This would have required an amendment to the 2014 Act, promised for 2019 by minister John Paul Phelan.

Historically, there were 117 parliamentary boroughs in the Irish House of Commons, of which 80 were disfranchised by the Acts of Union 1800. All but 11 municipal boroughs were abolished under the Municipal Corporations (Ireland) Act 1840. Under the Local Government (Ireland) Act 1898, six of these became county boroughs: Dublin, Belfast, Cork, Derry, Limerick and Waterford. From 1921, Belfast and Derry were part of Northern Ireland and stayed within the United Kingdom on the establishment of the Irish Free State in 1922.

Galway was a borough from 1937 until upgraded to a county borough in 1985. The county boroughs in the Republic of Ireland were redesignated as "cities" under the Local Government Act 2001.

Dún Laoghaire was a borough from 1930 until merged into Dún Laoghaire–Rathdown county in 1994.

There were five borough councils in place at the time of the Local Government Reform Act 2014 which abolished all second-tier local government units of borough and town councils. Each local government authority outside of Dublin, Cork City and Galway City was divided into areas termed municipal districts. In four of the areas which had previously been contained borough councils, as listed above, these were instead termed Borough Districts. Kilkenny had previously had a borough council, but its district was to be called the Municipal District of Kilkenny City, in recognition of its historic city status.
Under Israeli law, inherited from British Mandate municipal law, the possibility of creating a municipal borough exists. However, no borough was actually creat…

Read more on Wikipedia

• Cities portal
• History of local government in England
• Borough status in the United Kingdom
• Boroughs incorporated in England and Wales 1835–1882 and 1882–1974
• Burgh and List of burghs in Scotland
• County borough
• Ancient borough
• Metropolitan borough
• Municipal borough
• Boroughs of New York City
• Borough-English, a form of inheritance associated with the English boroughs