Counties were formerly administrative units across the whole UK. Due to various administrative restructurings however, the only administrative areas still referred to as counties are the nonmetropolitan (shire) counties of England. The English metropolitan counties, although no longer administrative units, are also used for statistical purposes.

​

https://www.ordnancesurvey.co.uk/products/boundary-line#technical

​

Source:

https://osdatahub.os.uk/downloads/open/BoundaryLine

Licence:

Contains public sector information licensed under the Open Government Licence v3.0.

https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/

The current counties of England are defined by the ceremonial counties, a collective name for the county areas to which are appointed a Lord Lieutenant. The office of Lord Lieutenant was created in the reign of Henry VIII. The Lord Lieutenant is the chief officer of the county and representative of the Crown. Whenever the Queen visits an area she will be accompanied by the Lord Lieutenant of that area. Legally the ceremonial counties are defined by the Lieutenancies Act 1997 as ‘Counties and areas for the purposes of the lieutenancies in Great Britain’ with reference to the areas used for local government.

​

https://www.ordnancesurvey.co.uk/products/boundary-line#technical

​

Source:

https://osdatahub.os.uk/downloads/open/BoundaryLine

Licence:

Contains public sector information licensed under the Open Government Licence v3.0.

https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/

​

A PDF map that shows the counties and unitary authorities in the United Kingdom as at 1 April 2023. (File Size - 583 KB)

This file contains the digital vector boundaries for Counties and Unitary Authorities in the United Kingdom, as at December 2019. The boundaries available are: (BUC) Ultra Generalised (500m) - clipped to the coastline (Mean High Water mark). Contains both Ordnance Survey and ONS Intellectual Property Rights. Download File SizesUltra Generalised (500m) - clipped to the coastline (200 KB)Units for the following fields:St_length = metresSt_area = metres2REST URL of ArcGIS for INSPIRE View Service https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2019_Boundaries_UK_BUC2/MapServer/exts/InspireView REST URL of ArcGIS for INSPIRE Feature Download Service https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2019_Boundaries_UK_BUC2/MapServer/exts/InspireFeatureDownload REST URL of Feature Access Service https://ons-inspire.esriuk.com/arcgis/rest/services/Administrative_Boundaries/Counties_and_Unitary_Authorities_December_2019_Boundaries_UK_BUC2/FeatureServer

1:1,000,000 raster map showing the County boundaries of Northern Ireland. A raster map is a static image displayed on screen which is suitable as background mapping. 1:1 000,000 Raster is smallest scale OSNI raster product giving an excellent overview of Northern Ireland. Published here for OpenData. By download or use of this dataset you agree to abide by the Open Government Data Licence.Please Note for Open Data NI Users: Esri Rest API is not Broken, it will not open on its own in a Web Browser but can be copied and used in Desktop and Webmaps

This file contains the digital vector boundaries for the historical admin counties without associated county boroughs in England and Wales as at Census Day 1921.

The boundaries available are: (BGC) Generalised resolution - clipped to the coastline (Mean High Water mark).

Contains both Ordnance Survey and ONS Intellectual Property Rights.

This file contains the digital vector boundaries for Counties and Unitary Authorities, in the United Kingdom, as at December 2024.The boundaries available are: (BGC) Generalised (20m) - clipped to the coastline (Mean High Water mark).Contains both Ordnance Survey and ONS Intellectual Property Rights.REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Counties_and_Unitary_Authorities_December_2024_Boundaries_UK_BGC/FeatureServerREST URL of WFS Server –https://dservices1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/services/Counties_and_Unitary_Authorities_December_2024_Boundaries_UK_BGC/WFSServer?service=wfs&request=getcapabilitiesREST URL of Map Server –https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/Counties_and_Unitary_Authorities_December_2024_Boundaries_UK_BGC/MapServer

Data identifying Cambridgeshire's county boundary. For more information, please see the ONS Geoportal website. If data is used, please acknowledge the copyright and the source of the data by including the following attribution statements:

Contains National Statistics data © Crown copyright and database right (2016)

Contains OS data © Crown copyright and database right (2016)

For more details about licencing go to: https://www.ons.gov.uk/methodology/geography/licences

Source: ONS Geoportal

All data is correct as of download date: 17/10/2016

Counties dataset generated from the 2019 National Statutory Boundary dataset. Ungeneralised.

The division into counties based on the model used in the English system, was introduced gradually by English settlers from the late 12th century onwards. These land divisions were formed following the Norman invasion of Ireland in imitation of the counties then in use as units of local government in the Kingdom of England. The older term "shire" was historically equivalent to "county". The principal function of the county was to impose royal control in the areas of taxation, security and the administration of justice at local level. Following a survey under the 1825 Boundary Survey Act, an extensive series of maps of Ireland was created by the Irish division of the Ordnance Survey for taxation purposes. These maps both documented and standardised the boundaries of the thirty two counties of Ireland.

Coordinate Reference System: Irish Transverse Mercator.

This dataset is provided by Tailte Éireann – National Mapping Division

The division into counties based on the model used in the English system, was introduced gradually by English settlers from the late 12th century onwards. These land divisions were formed following the Norman invasion of Ireland in imitation of the counties then in use as units of local government in the Kingdom of England. The older term "shire" was historically equivalent to "county". The principal function of the county was to impose royal control in the areas of taxation, security and the administration of justice at local level. Following a survey under the 1825 Boundary Survey Act, an extensive series of maps of Ireland was created by the Irish division of the Tailte Éireann for taxation purposes. These maps both documented and standardised the boundaries of the thirty two counties of Ireland.Coordinate Reference System: Irish Transverse Mercator.This dataset is provided by Tailte Éireann

Analysis of ‘Counties - OSi National Statutory Boundaries’ provided by Analyst-2 (analyst-2.ai), based on source dataset retrieved from http://data.europa.eu/88u/dataset/e8045183-64c0-4bb3-afc7-69a92fbf1f47 on 15 January 2022.

--- Dataset description provided by original source is as follows ---

--- Original source retains full ownership of the source dataset ---

The division into counties based on the model used in the English system, was introduced gradually by English settlers from the late 12th century onwards. These land divisions were formed following the Norman invasion of Ireland in imitation of the counties then in use as units of local government in the Kingdom of England. The older term "shire" was historically equivalent to "county". The principal function of the county was to impose royal control in the areas of taxation, security and the administration of justice at local level. Following a survey under the 1825 Boundary Survey Act, an extensive series of maps of Ireland was created by the Irish division of the Ordnance Survey for taxation purposes. These maps both documented and standardised the boundaries of the thirty two counties of Ireland.County boundary dataset generated from the 2019 OSi National Statutory Boundary dataset. Generalised to 20 metres.Coordinate Reference System: Irish Transverse Mercator.

This dataset is from the Ordnance Survey and it provides a representation of the hierarchy of administrative and electoral boundaries for GB (England, Scotland and Wales). The product is part of the new OS Open products suite and is designed to be used with other OpenData sets.The dataset is made up of 18 layers which are grouped in their respective categories. It contains all levels of electoral and administrative boundaries, from district, wards, civil parishes (or communities) up to parliamentary and assembly constituencies. The layers can be grouped as followed:Administrative Boundaries• Mean high water (GB)• Country (GB)• Historic European regions (GB)• Historic counties (GB)• Ceremonial counties (GB)• District, Metropolitan district, Unitary authority (GB)• Civil parish and community (GB)• Ward (district, unitary, metropolitan, London borough) (England, Scotland)• English region (England)• County (England)• Community (Wales)Electoral Boundaries• Westminster constituencies (GB)• Scottish and Welsh constituency• Scottish and Welsh electoral region• Polling districts (England)• County electoral division (England)• Unitary electoral division (England and Wales)• Greater London Authority Assembly constituenciesThe currency of this data is 04/2022 and the coverage of this service is GB.The map projection is British National Grid.

This file contains the digital vector boundaries for the historical County Boroughs in England and Wales as at Census Day 1921.Version 2 note: Includes York, City and County Of CB (H06201859).The boundaries available are: (BGC) Generalised resolution - clipped to the coastline (Mean High Water mark).Contains both Ordnance Survey and ONS Intellectual Property Rights.

REST URL of WFS Server – https://dservices1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/services/County_Boroughs_December_1921_Boundaries_EW_BGC_V2/WFSServer?service=wfs&request=getcapabilities

REST URL of MapServer – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/County_Boroughs_(December_1921)_Boundaries_EW_BGC_V2/MapServer

REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/CB_JUN_1921_EW_BGC_V2/FeatureServer

This file contains the digital vector boundaries for County Electoral Division, in England, as at May 2023.The boundaries available are: (BUC) Ultra Generalised (500m) - clipped to the coastline (Mean High Water Mark).Contains both Ordnance Survey and ONS Intellectual Property Rights.

REST URL of Feature Access Service – https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/County_Electoral_Division_May_2023_Boundaries_EN_BUC/FeatureServerREST URL of WFS Server –https://dservices1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/services/County_Electoral_Division_May_2023_Boundaries_EN_BUC/WFSServer?service=wfs&request=getcapabilitiesREST URL of Map Server –https://services1.arcgis.com/ESMARspQHYMw9BZ9/arcgis/rest/services/County_Electoral_Division_(May_2023)_Boundaries_EN_BUC/MapServer

The division into counties based on the model used in the English system, was introduced gradually by English settlers from the late 12th century onwards. These land divisions were formed following the Norman invasion of Ireland in imitation of the counties then in use as units of local government in the Kingdom of England. The older term "shire" was historically equivalent to "county". The principal function of the county was to impose royal control in the areas of taxation, security and the administration of justice at local level. Following a survey under the 1825 Boundary Survey Act, an extensive series of maps of Ireland was created by the Irish division of the Tailte Éireann for taxation purposes. These maps both documented and standardised the boundaries of the thirty two counties of Ireland.Coordinate Reference System: Irish Transverse Mercator.This dataset is provided by Tailte Éireann

Abstract copyright UK Data Service and data collection copyright owner.

The Great Britain Historical Database has been assembled as part of the ongoing Great Britain Historical GIS Project. The project aims to trace the emergence of the north-south divide in Britain and to provide a synoptic view of the human geography of Britain at sub-county scales. Further information about the project is available on A Vision of Britain webpages, where users can browse the database's documentation system online.

These digital boundaries were created by the Great Britain Historical GIS Project and form part of the Great Britain Historical Database, which contains a wide range of geographically-located statistics, selected to trace the emergence of the north-south divide in Britain and to provide a synoptic view of the human geography of Britain, generally at sub-county scales.

They represent the boundaries of Administrative Counties in England and Wales as in use at the date of each Census of Population between 1911 and 1971, 1911 being the first census to report extensively on these units.

Main Topics:

These digital boundaries can be used to map economic, social and demographic statistics from the Censuses of Population, 1911 to 1971, the Registrar-General's reports from the same period, and other relevant statistical sources. They can also be used as reference maps for these administrative units.

These units were aggregations of Local Government Districts and differed significantly from both Ancient Counties and the Registration Counties covered by earlier censuses. Difference include that the three Ridings of Yorkshire and the three Parts of Lincolnshire were separate Administrative Counties, as were East and West Suffolk, and East and West Sussex. The Isle of Ely and the Soke of Peterborough were also separate Administrative Counties until 1965, when Middlesex was also abolished as the County of London was expanded to become Greater London. The Isle of Wight was a separate Administrative County from Hampshire throughout the period.

The boundary data contain the same numerical identifiers as are included in the GBHD transcriptions of census and vital registration statistics for Administrative Counties, making statistical mapping straightforward.

A PDF map that shows the local authority districts, counties and unitary authorities in the United Kingdom as at April 2023. The map has been created to show the United Kingdom from country level down to local authority district level. (File Size - 1,909 KB)

The geoBoundaries Global Database of Political Administrative Boundaries Database is an online, open license resource of boundaries (i.e., state, county) for every country in the world. Currently 199 total entities are tracked, including all 195 UN member states, Greenland, Taiwan, Niue, and Kosovo. Comprehensive Global Administrative Zones (CGAZ) is a set of global composites for administrative boundaries. Disputed areas are removed and replaced with polygons following US Department of State definitions. It has three boundary levels ADM0, ADM1, and ADM2, clipped to international boundaries (US Department of State), with gaps filled between borders. This dataset is part of CGAZ. It was ingested from version 6.0.0 of Global Composite Files with DBF_DATE_LAST_UPDATE=2023-09-13. It shows boundaries at level ADM0 (country-level boundaries).

Abstract copyright UK Data Service and data collection copyright owner.

The aims of the project were :
to ascertain how many enclosure, parochial assessment, drainage and sanitary maps survive in England and Wales;
to analyse their cartographic characteristics, including scale, date and mapmaker;
to analyse the way in which central and local government and their agencies used maps as instruments with which to implement policy relating to the ownership, use and taxation of land;
to analyse regional and temporal variations in the coverage of England and Wales by various types of map;
to obtain data on historic parish and township boundaries in England and Wales.
Main Topics:

The dataset covers all the enclosure, parochial assessment, drainage and sanitary maps of England and Wales which were available for public consultation at the time of data collection (1993-1997). For all maps, the date of the map, its scale, its centroid on the National Grid, its dimensions, its maker (where known) and all details as to the types of information (boundaries, communications, settlement, land use, water features, public boundaries, cadastral information) contained on each map are recorded. It is possible to analyse the data by late nineteenth century county, by date and by type of map.

Please note: this study does not include information on named individuals and would therefore not be useful for personal family history research.