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Population on 1 January. By sex and age groups

Population on 1 January. By sex and age groups Catalonia. 2020
Men Women Total
From 0 to 4 years 175,639 166,444 342,083
From 5 to 9 years 204,556 191,792 396,348
From 10 to 14 years 220,728 206,517 427,245
From 15 to 19 years 207,496 191,580 399,076
From 20 to 24 years 202,399 188,549 390,948
From 25 to 29 years 219,923 214,102 434,025
From 30 to 34 years 236,169 236,439 472,608
From 35 to 39 years 280,407 277,014 557,421
From 40 to 44 years 341,608 326,890 668,498
From 45 to 49 years 327,722 312,984 640,706
From 50 to 54 years 289,820 285,138 574,958
From 55 to 59 years 252,047 261,223 513,270
From 60 to 64 years 216,118 234,163 450,281
From 65 to 69 years 180,837 203,833 384,670
From 70 to 74 years 163,167 193,233 356,400
From 75 to 79 years 122,899 154,907 277,806
From 80 to 84 years 80,027 116,849 196,876
From 85 to 89 years 56,833 101,208 158,041
From 90 to 94 years 21,319 49,615 70,934
From 95 to 99 years 4,302 14,070 18,372
From 100 years and over 341 1,849 2,190
Total 3,804,357 3,928,399 7,732,756
Source: Idescat. Population Estimates.

Last update: December 23, 2020. 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 "..".