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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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144 news items

Scoop.co.nz (press release)
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 ...
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 ...


Tue, 08 Jul 2014 07:15:00 -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 ...
San Jose Mercury News
Wed, 23 Jul 2014 23:56:15 -0700

According to the California Finance Department, which is the source for the city's population statistics, Dublin had 53,462 residents on Jan. 20 -- which includes the nearly 1,100 female inmates at the low-security federal prison. That population doesn ...
Guelph Mercury
Thu, 24 Jul 2014 05:33:45 -0700

The governments, both provincial and federal with their finger on the pulse (excuse my sarcasm), have realized over the last two or three years that there is nobody trained out there to fill the jobs vacated by our aging population. Statistics show ...
Motley Fool
Thu, 24 Jul 2014 04:32:56 -0700

To do all of this, Job Explorer uses existing Glassdoor data on available jobs and the career histories of its members, plus outside unemployment data and population statistics to create a new way to view America's job landscape -- one intended to help ...

Sky News Australia

3News NZ
Sun, 20 Jul 2014 19:25:02 -0700

Population statistics manager Vina Cullum said growth was driven by visitors from Asia, especially Japan and China, who were opting to holiday in New Zealand. Visitor arrivals numbered 2.79 million in the year to June 2014, up 6 percent from the ...

Sudan Tribune

Sudan Tribune
Sun, 06 Jul 2014 00:30:00 -0700

The director of the Department for Population and Social Studies at the Bureau Kamal al-Din Ahmed, said they have joint work with the NEC with respect to administrative distributions and official population statistics. Ahmed told the pro-government ...

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