In 2023, Croydon had the largest population among London's 32 boroughs at 397,741, while Kensington and Chelsea had the smallest population, at 147,460.

The London Borough Profiles help paint a general picture of an area by presenting a range of headline indicator data in both spreadsheet and map form to help show statistics covering demographic, economic, social and environmental datasets for each borough, alongside relevant comparator areas. The London Borough Atlas does the same but provides further detailed breakdowns and time-series data for each borough. The full datasets and more information for each of the indicators are usually available on the London Datastore. A link to each of the datasets is contained in the spreadsheet and map. London Borough Profiles On opening the Microsoft Excel version, a simple drop down box allows you to choose which borough profile you are interested in. Selecting this will display data for that borough, plus either Inner or Outer London, London and a national comparator (usually England where data is available). To see the full set of data for all 33 local authorities in London plus the comparator areas in Excel, click the 'Data' worksheet. A chart and a map are also available to help visualise the data for all boroughs (macros must be enabled for the Excel map to function). The data is set out across 11 themes covering most of the key indicators relating to demographic, economic, social and environmental data. Sources are provided in the spreadsheet. Notes about the indicator are provided in comment boxes attached to the indicator names. For a geographical and bar chart representation of the profile data, choose the InstantAtlas version. Choose indicators from the left hand side. Click on the comparators to make them appear on the chart and map. Sources, links to data, and notes are all contained in the box in the bottom right hand corner. These profiles include data relating to: Population, Households (census), Demographics, Migrant population, Ethnicity, Language, Employment, NEET, DWP Benefits (client group), Housing Benefit, Qualifications, Earnings, Volunteering, Jobs density, Business Survival, Crime, Fires, House prices, New homes, Tenure, Greenspace, Recycling, Carbon Emissions, Cars, Public Transport Accessibility (PTAL), Indices of Multiple Deprivation, GCSE results, Children looked after, Children in out-of-work families, Life Expectancy, Teenage conceptions, Happiness levels, Political control, and Election turnout. London Borough Atlas To access even more data at local authority level, use the London Borough Atlas. It contains data about the same topics as the profiles but provides further detailed breakdowns and time-series data for each borough. There is also an InstantAtlas version available. The London boroughs are: City of London, Barking and Dagenham, Barnet, Bexley, Brent, Bromley, Camden, Croydon, Ealing, Enfield, Greenwich, Hackney, Hammersmith and Fulham, Haringey, Harrow, Havering, Hillingdon, Hounslow, Islington, Kensington and Chelsea, Kingston upon Thames, Lambeth, Lewisham, Merton, Newham, Redbridge, Richmond upon Thames, Southwark, Sutton, Tower Hamlets, Waltham Forest, Wandsworth, Westminster. You may also find our small area profiles useful - Ward, LSOA, and MSOA.