Population By Country
Data provided by World Bank. All data available for downloading. Use “View Mode” field inside the report to select preferable format.
Click the “New Report” icon to run a report about population by country (with age structure). Select a year from interval 1961 – 2013 and get the table with population and its age structure data for all countries.
Click the “New Report” icon to run a report about population of the country by year (with age structure). Select a country and get the table with population and its age structure data by year for 1961 – 2013
Click the “New Graph” icon to run a Graph builder with population dynamics by year for a country. Select a country and get a graph with its population by year for 1961 – 2013.
Graph Example: USA population dynamics
Click the “New Graph” icon to run a Population comparing for few countries graph. Select few countries and get graph where you can compare its population by year for 1961 – 2013.
Graph Example: Compare Population Dynamics: China vs India
Click the “New Graph” icon to run a Graph builder for comparing of children share in population for few countries. Select few countries and get graph where you can compare the share of people aged from 0 to 14 in country population by year for 1961 – 2013.
Graph Example: Compare Share Of Children For US, China and Afganistan
Click the “New Graph” icon to run a Graph builder for comparing of share of adults in population for few countries. Select few countries and get graph where you can compare the share of people aged from 15 to 64 in population by year for 1961 – 2013.
Graph Example: Compare Share Of People Aged 15 – 64 Years For US, China and India
How do they calculate population of the country?
The population by country is the estimation of amount of humans living in each country at the moment. International institutions calculate country population using local data provided by national governments. These amounts can be corrected in some way in case a quality of national data is low.
According to World Bank definition total population of the country includes all residents regardless of legal status or citizenship – except for refugees not permanently settled in the country of asylum, who are generally considered part of the population of their country of origin.
There are different ways for national governments to count people under their authority. First of all they can use data aggregated by different national services on the regular basis: data aggregated by tax service, social insurance data etc. Quality of this data varies from country to country significantly. The advantage of this approach is that this data can be updated regularly. In case of “strong government” the legal population will be counted correctly. But this data obviously does not include illegal migrants and other people who are “invisible” for official services on some reasons. It can lead to significant mistakes.
Other tool available for national authorities is the population census. The basic goal of census is to identify the real population and population structure. This approach can give better results, but a population census can not be performed often. It is too expensive to conduct it on the yearly basis. Therefore national governments usually use data from different sources.
Sometimes there is no chance to get any data from national government. In this case we can use estimations only. For example population of Sudan is really unknown now. Last census took place in 1993, when the population was calculated at 25 millions. Because of continuous civil war (and, finally, the secession of South Sudan in 2011) national government had no opportunity to get any reasonable data about population dynamics. So now we only have few estimations made by different institutions. Estimation of Sudan population varies from 37 million (United Nations) to 45 million (CIA).
Therefore working with population numbers you should always remember that it is just an estimation made with some (good or bad) quality. So when you check World Bank data about United States population you should realize that quantity 316,128,839 is just en estimation which looks like exact number. Taking into account the fact that few millions (from 7 to 30 millions) of illegal immigrants live in United States it would be more reasonable to round this amount up to million.