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Intercensal Adjustment of Current Population Estimates (1995 - 2000)
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Method of Intercensal Adjustment of Current Population Estimates
The intercensal adjusted population
The population estimates as of the first day of each month are calculated using the recent census population. However, the estimated population as of October 1, 2000 based on the Census population of 1995 is not necessarily equal to the Census population of 2000. Therefore, the population estimates between the 1995 and the 2000 Population Censuses have been revised by the intercensal adjustment.
The intercensal adjustment was made for the following population.
(2) The population by sex for prefectures as of October 1 of each year (1996 to 1999)
Note: No adjustment has been made for the population by age.
Outline of intercensal adjustment
1 Intercensal adjusted population as of the first day of each month, Japan
(1) Method of calculationAdjusted population of the stated month
= Adjusted population of the previous month
+ Total net change of the previous month
+ Intercensal adjustment
(2) Adjusted population of the previous month
As for October 1, 1995, it is the Census population of 1995 (included unknown age population after being prorated).
(3) Total net change (from the first day to the last day of the previous month)
+ Migration change
+ Net increase by change of nationality (for Japanese population only)
(4) Intercensal adjustment (from the first day to the last day of the previous month)
The adjustment number is calculated by evenly distributing the difference between the Census population of 2000 and the estimated population as of October 1, 2000 based on the Census population of 1995 to each month.
2 Intercensal adjusted population as of October 1 of each year by prefectures
(1) Method of calculationAdjusted population of the stated year
= Adjusted population of the previous year
+ Total net change from October of the previous year to September of the stated year
+ Intercensal adjustment
(2) Adjusted population of the previous year
As for October 1, 1995, it is the Census population of 1995 (included unknown age population after being prorated).
(3) Total net change (from October of the previous year to September of the stated year)
+ Migration change
+ Net increase by change of nationality (for Japanese population only)
The adjustment number is calculated by evenly distributing the difference between the Census population of 2000 and the estimated population as of October 1, 2000 based on the Census population of 1995 to each year.