Intercensal estimate in the field of demographics

Demographics

Demographics are the most recent statistical characteristics of a population. These types of data are used widely in sociology , public policy, and marketing. Commonly examined demographics include gender, race, age, disabilities, mobility, home ownership, employment status, and even location...

 is an estimate of population between official census

Census

A census is the procedure of systematically acquiring and recording information about the members of a given population. It is a regularly occurring and official count of a particular population. The term is used mostly in connection with national population and housing censuses; other common...

 dates. Some nations produce regular intercensal estimates while others do not. Intercensal estimates can be less informative or more informative than official census figures, depending on methodology

Methodology

Methodology is generally a guideline for solving a problem, with specificcomponents such as phases, tasks, methods, techniques and tools . It can be defined also as follows:...

, completeness, accuracy and date of data, and can be released by nations, subnational entities, or other organizations including those not affiliated with governments. They differ from population projection

Population projection

Population projection, in the field of demography, is an estimate of a future population. In contrast with intercensal estimates and censuses, which usually involve some sort of field data gathering, projections usually involve mathematical models based only on pre-existing data. A projection may...

s. They also can have significant undercounts or overestimates.

By country

• Indonesia's BPS
  BPS
  BPS can stand for:In science, mathematics and technology*Base pairs, a measure of length of DNA using the number of nucleotide pairs*Basis points, equal to one one-hundredth of a percentage point...
  
   releases province by province annual estimates for all provinces, regencies, and kota in Indonesia, with some provinces more up to date than others.

• Brazil's IBGE
  IBGE
  The Brazilian Institute of Geography and Statistics or IBGE , is the agency responsible for statistical, geographic, cartographic, geodetic and environmental information in Brazil...
  
   releases regular annual estimates for all states and cities in Brazil.

• Canada's Statistics Canada
  Statistics Canada
  Statistics Canada is the Canadian federal government agency commissioned with producing statistics to help better understand Canada, its population, resources, economy, society, and culture. Its headquarters is in Ottawa....
  
   releases regular quarter annual intercensal estimates for provinces and territories in Canada.

• Japan releases regular annual intercensal estimates for all prefectures and cities in Japan, every October ONLY. It releases national estimates monthly.

• The United States Census Bureau releases regular intercensal estimates of total population of the country, states, and metropolitan areas annually. Unincorporated areas are counted only during censuses. California compiles annual estimates separately from the Census Bureau, which includes unincorporated areas and differing methodology.