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Population statistics is the use of statistics to analyze characteristics or changes to a population. It is related to social demography and demography.

Population statistics can analyze anything from global demographic changes to local small scale changes. For example, an analysis of global change shows that population growth has slowed, infant mortality rates have declined and there have been small increases in the aged.


National population statistics are usually collected by conducting a census. However, because these are usually huge logistical exercises, countries normally conduct censuses only once every five to 10 years. Even when a census is conducted it may miss counting everyone (known as undercount). Also, some people counted in the census may be recorded in a different place than where they usually live, because they are travelling, for example (this may result in overcounting). Consequently, raw census numbers are often adjusted to produce census estimates that identify such statistics as resident population, residents, tourists and other visitors, nationals and aliens(non-nationals). For privacy reasons, particularly when there are small counts, some census results may be rounded, often to the nearest ten, hundred, thousand and sometimes randomly up, down or to another small number such as within 3 of the actual count.

Between censuses, administrative data collected by various agencies about population events such as births, deaths, and cross-border migration may be used to produce intercensal estimates.

Population estimates and projections[edit]

Population estimates are usually derived from census and other administrative data. Population estimates are normally produced after the date the estimate is for.

Some estimates, such as the Usually resident population estimate who usually lives in a locality as at the census date, even though the census did not count them within that locality. Census questions usually include a questions about where a person usually lives, whether they are a resident or visitor, or also live somewhere else, to allow these estimates to be made.

Other estimates are concerned with estimating population on a particular date that is different from the census date, for example the middle or end of a calendar or financial year. These estimates often use birth and death records and migration data to adjust census counts for the changes that have happened since the census.

Population projections are produced in advance of the date they are for. They use time series analysis of existing census data and other sources of population information to forecast the size of future populations. Because there are unknown factors that may affect future population changes, population projections often incorporate high and low as well as expected values for future populations. Population projections are often recomputed after a census has been conducted. It depends on how conjusted the area is in the particular demarcation.


While many censuses were conducted in antiquity, there are few population statistics that survive. One example though can be found in the Bible, in chapter 1 of the Book of Numbers. Not only are the statistics given, but the method used to compile those statistics is also described. In modern day terms, this metadata about the census is probably of as much value as the statistics themselves as it allows researchers to determine not only what was being counted but how and why it was done.


Modern population statistics are normally accompanied by metadata that explains how the statistics have been compiled and adjusted to compensate for any collection issues.

Statistical sources[edit]

Most countries have a census bureau or government agency responsible for conducting censuses. Many of these agencies publish their country's census results and other population statistics on their agency's website.

See also[edit]


External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Population_statistics — Please support Wikipedia.
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126 news items


Sun, 27 Jul 2014 19:37:30 -0700

"They're effectively winning twice as many medals per head of population as the next country on the table," population statistics manager Vina Cullum said. New Zealand is ranked fifth behind Wales, Scotland and Samoa - only one spot off our ranking on ...

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Infolink Architecture & Building
Mon, 28 Jul 2014 19:03:37 -0700

Australia's population growth has registered a slowdown in 2013, according to population statistics recently released by the Australian Bureau of Statistics (ABS), with just over 396,000 new residents added to the population over the 2013 calendar year.


Tue, 08 Jul 2014 07:21:33 -0700

Whenever the government makes claims regarding population statistics that are nowhere near what the Department of Statistics is producing, the government is discrediting the Department; telling the world not to believe the work of that Department, and ...
Thu, 24 Jul 2014 18:07:30 -0700

"We're doing very well when we look at how many medals we're winning relative to our population," population statistics manager Vina Cullum said. New Zealand has 0.67 medals per million of population, behind only Cyprus with 0.89 and Scotland, which ...

Arizona Republic

Arizona Republic
Thu, 31 Jul 2014 16:15:00 -0700

Aruna Murthy, director of economic analysis for the Arizona Office of Employment and Population Statistics, blamed the poor numbers on the rapid slowdown in construction of buildings. Nationally, such projects have increased 5.6 percent over the past year.
New Zealand Herald
Fri, 25 Jul 2014 09:52:30 -0700

As of last night, New Zealand athletes had won three medals - one gold and two bronze - putting them third on a population-based medal table with 0.67 medals per million of population, Statistics New Zealand said. The nation was behind only Scotland ...
Hartford Courant
Thu, 31 Jul 2014 16:15:00 -0700

HARTFORD – The latest statewide data on Connecticut police traffic stops indicates that minorities are being stopped at rates higher than population statistics would suggest is normal. State officials are now crunching those numbers to determine ...
Minneapolis Star Tribune (blog)
Tue, 22 Jul 2014 10:15:00 -0700

The immigrant population statistics are laid out in a report published a month ago by the Chicago Council on Global Affairs. Whatever your politics, the figures illustrate that job markets in the Midwest are quietly beckoning a lot of people from other ...

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