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Population on 1 January. By sex and age groups

Population on 1 January. By sex and age groups Catalonia. 2021
Men Women Total
From 0 to 4 years 167,164 159,112 326,276
From 5 to 9 years 199,791 187,689 387,480
From 10 to 14 years 221,740 207,514 429,254
From 15 to 19 years 211,501 195,485 406,986
From 20 to 24 years 206,938 192,169 399,107
From 25 to 29 years 220,352 212,680 433,032
From 30 to 34 years 236,064 234,378 470,442
From 35 to 39 years 270,739 268,114 538,853
From 40 to 44 years 334,515 321,731 656,246
From 45 to 49 years 335,658 319,891 655,549
From 50 to 54 years 295,926 289,305 585,231
From 55 to 59 years 258,499 265,803 524,302
From 60 to 64 years 221,676 239,871 461,547
From 65 to 69 years 184,142 207,509 391,651
From 70 to 74 years 161,205 191,879 353,084
From 75 to 79 years 123,445 156,988 280,433
From 80 to 84 years 82,905 119,015 201,920
From 85 to 89 years 56,350 99,666 156,016
From 90 to 94 years 21,592 50,405 71,997
From 95 to 99 years 4,280 14,054 18,334
From 100 years and over 341 1,815 2,156
Total 3,814,823 3,935,073 7,749,896
Source: Idescat. Population Estimates.

Last update: December 20, 2021. Revised series on July 11, 2023.

Methodological note

Definition of concepts

Intercensal population estimates
Calculation of the population by sex and age that connects two censuses. Intercensal estimates replace postcensal once you have the results of a new census of population, and provide final series of population between two censuses.
Postcensal population estimates
Calculation of the population by sex and age in the years after the last census. The postcensal estimates provide the series of population from the last census available, that are calculated adding the natural movement and migration that are recorded annually.

Methodological aspects

The basic information on the population on 1 January and the population structure indicatorsare obtained from the Population Estimates.

The Population Estimates are statistical operations produced annually that provide a headcount of the resident population within Catalonia and its distribution by sex and age. The time reference for the postcensal population estimates is 1st January.

The postcensal population estimates are calculated based on the last available census and the demographic shifts from the corresponding year (birth, death and migration). The information they provide enable us to find out the levels of demographic growth and the shift in the population pyramid on a yearly basis. It also enables us to reliably calculate the demographic, social and economic indicators in which the population groups are the reference denominator, especially when these denominators must be disaggregated according to the features of sex and age.

The early postcensal estimates aim to provide a statistical estimation of the population classified by sex and age as early as possible with respect to the reference date. They are calculated in the second quarter of the year based on the provisional data for demographic flows. The results are kept updated until replaced by the Definitive Post-Census Estimates, calculated once figures for births, deaths and migrations are available for the year of reference.

By taking a new population census tally, the annual figures of the population estimates can be revised in the interim between two censuses, and from this the intercensal population estimates are generated. The production of intercensal estimates, then, consists of retroactively correcting the postcensal population estimates with the aid of the data from the new census. The level of disaggregation of the data is the same as for the postcensal estimates.

Unavailable information is represented using the symbol ":". When the value is lower than that of the minimum unit to be able to estimate the statistical operation or if it effects statistical confidentiality, the symbol used is "..".