GIS- popuation and census data

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Geographical Information Systems:

Population and Cenus data

Seconary data- any data collected from another source.

Secondary analysis- is the re-analysis of this data.

Administrative records- includes records such as NHS, school records (publc service records)

Major Government Surveys- decennial census, general lifestyle survey.

Research data-  is data collected by other people/organisations.


Data as context- to be able to compare conxtauly against past and present for example.

        Data as Comparison- used to compare old trends to current trends, highlighing whether patterns             have changed over time or not.

         Data as the basis of analysis- major sources of research data i.e. the relatiosip between the geographical variaions in fear of crime and crime incidence.

          Understand the previous research- this allows us to highlights the key themes and key players.

What are the Pro's and Cons?


< seconary data is cheap/ often free

< clean and uncoded

< machine readable, often already formated.


<not always appropriate 

< out of data

< inconsistant definitions of key words

<take into acount the political framework and bias

The Decennial Census of Population

Census= the total enumration of the population at a single point in time.

provides a national coverage of popualtion

its a legal requiement so is a complete national head count.


> to plan public spending

> to compare across areas

> acess demand

> to look at emoloyment rates, markets and changes in popuation nationally overtime.

>Monitor impact of public policy (looks at equal opppoutunities)

What do we do with census data? 

< descrive the demography of an area

< explore the nature of relationships both demographically and social-economically.

< allows us to calualte statistical rates i.e. death

< combine cenus variables into a single overall indec or meaure of deprivation.


- people are vaulable assets

- Baylonians and chinese counted people to manage food demand, milita and tax.

- Egyptians used census' to plan armies of people to build pryamids and to redistribute land in the nile flood plane.

- Greeks and Romans, occured every 5 years, had to return to your place of ogin (males place of orgin)

- Englad has thier first thorough survey in 1086 (domesday book…


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