Intercensal estimate in the field of demographics is an estimate of population between official census dates. Some nations produce regular intercensal estimates while others do not. Intercensal estimates can be less or more informative than official census figures, depending on methodology, completeness, accuracy (as they can have significant undercounts or overestimates) 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 projections.
Statistics Canada releases regular quarter annual intercensal estimates for provinces and territories in Canada.
Japan releases regular annual intercensal estimates for all prefectures and cities, every October. National estimates are released 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.