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.