Cookies on ons.gov.uk

Cookies are small files stored on your device when you visit a website. We use some essential cookies to make this website work.

We would like to set additional cookies to remember your settings and understand how you use the site. This helps us to improve our services.

Manage settings

You have accepted all additional cookies. You have rejected all additional cookies. You can change your cookie preferences at any time.

Skip to main content
/census/2001censusandearlier/dataandproducts/dataandproductnotes
Office for National Statistics logo - Homepage
English (EN) | Cymraeg (CY)
  • Release calendar
  • Methodology
  • Media
  • About
  • Blog
  • Menu
  • Search
  • Home
  • Business, industry and trade
    • Business
    • Changes to business
    • Construction industry
    • IT and internet industry
    • International trade
    • Manufacturing and production industry
    • Retail industry
    • Tourism industry
  • Economy
    • Economic output and productivity
    • Environmental accounts
    • Government, public sector and taxes
    • Gross Domestic Product (GDP)
    • Gross Value Added (GVA)
    • Inflation and price indices
    • Investments, pensions and trusts
    • National accounts
    • Regional accounts
  • Employment and labour market
    • People in work
    • People not in work
  • People, population and community
    • Armed forces community
    • Births, deaths and marriages
    • Crime and justice
    • Cultural identity
    • Education and childcare
    • Elections
    • Health and social care
    • Household characteristics
    • Housing
    • Leisure and tourism
    • Measuring progress, well-being and beyond GDP
    • Personal and household finances
    • Population and migration
  • Taking part in a survey?
  • English (EN) | Cymraeg (CY)

Data and analysis from Census 2021

  1. Home
  2. Census
  3. 2001 Census and earlier
  4. Data and Products
  5. Data and product notes

Data and product notes

Notes and information about differences or issues specific to a small number of releases.

  • Differences in health area data

    Information explaining why some data for Primary Care Trusts differ between Key Statistics and Standard Table releases.

  • Origin-destination background information

    Overview and background information about the creation of Origin-Destination statistics.

  • Origin-destination guidance

    Guidance on combining data from different Origin-Destination tables.

  • Urban area definitions

    Details of the definitions used for urban areas in 2001 Census products.

Footer links

Help

  • Accessibility
  • Cookies
  • Privacy
  • Terms and conditions

About ONS

  • What we do
  • Careers
  • Contact us
  • News
  • Freedom of Information

Connect with us

  • X
  • Instagram
  • Facebook
  • LinkedIn
  • Consultations
  • Discussion forums
  • Email alerts
OGL

All content is available under the Open Government Licence v3.0, except where otherwise stated