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World Population Prospects

 

 

World Urbanization Prospects, the 2011 Revision

Glossary of Demographic Terms

Variable

Definition

Total population

De facto population in a country, area or region as of 1 July of the year indicated. Figures are presented in thousands.

Urban population

De facto population living in areas classified as urban according to the criteria used by each area or country. Data refer to 1 July of the year indicated and are presented in thousands.

Rural population

De facto population living in areas classified as rural. Data refer to 1 July of the year indicated and are presented in thousands.

Percentage urban

Urban population as a percentage of the total population.

Percentage rural

Rural population as a percentage of the total population.

Total annual growth rate

See: Average annual rate of change of the total population

Urban annual growth rate

See: Average annual rate of change of the urban population

Rural annual growth rate

See: Average annual rate of change of the urban population

Average annual rate of change of the total population

Average exponential rate of growth of the population over a given period.  It is calculated as ln(Pt/P0)/n where n is the length of the period and P is the population. It is expressed as a per cent.

Average annual rate of change of the urban population

Average exponential rate of growth of the urban population over a given period.  It is calculated as ln(UPt/UP0)/n where n is the length of the period and UP is the urban population. It is expressed as a per cent.

Average annual rate of change of the rural population

Average exponential rate of growth of the rural population over a given period.  It is calculated as ln(RPt/RP0)/n where n is the length of the period  and RP is the rural population. It is expressed as a per cent.

Average annual rate of change of the percentage urban

Average exponential rate of change of the percentage urban over a given period.  It is calculated as ln(PUt/PU0)/n where n is the length of the period and PU is the percentage urban. It is expressed as a per cent.

Average annual rate of change of the percentage rural

Average exponential rate of change of the percentage rural over a given period.  It is calculated as ln(PRt/PR0)/n where n is the length of the period and PR is the percentage rural. It is expressed as a per cent.

Urban agglomeration

Refers to the de facto population contained within the contours of a contiguous territory inhabited at urban density levels without regard to administrative boundaries. It usually incorporates the population in a city or town plus that in the sub-urban areas lying outside of but being adjacent to the city boundaries.

Metropolitan area

Includes both the contiguous territory inhabited at urban levels of residential density and additional surrounding areas of lower settlement density that are also under the direct influence of the city (e.g., through frequent transport, road linkages, commuting facilities etc.).

City proper

A locality defined according to legal/political boundaries and an administratively recognized urban status that is usually characterized by some form of local government.

Capital cities

The designation of any specific city as a capital city is done solely on the basis of the designation as reported by the country or area. The city can be the seat of the government as determined by the country. Few countries designate more than one city to be a capital city with a specific title function (e.g., administrative and/or legislative capital).

Urban agglomerations annual growth rate

See: Average annual rate of change of urban agglomerations

Average annual rate of change of urban agglomerations

Average exponential rate of growth of the population of urban agglomerations over a given period.  It is calculated as ln(PUAt/PUA0)/n where n is the length of the period and PUA is the population of urban agglomerations. It is expressed as a per cent.

Percentage of the urban population residing in urban agglomerations

Population residing in urban agglomerations as a percentage of the total urban population.

Percentage of the total population residing in urban agglomerations

Population residing in urban agglomerations as a percentage of the total population

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