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Methodological aspects

The data from the population census concerning the location of economic activity of the employed population on the location of the student population place of study allows for knowing the commuting for the population by comparing the place of work/study with the place of residence of the workers and students. The population census also examines mobility characteristics like transport means used, number of trips and their duration, while connecting these variables to demographic and economic characteristics.

The reference population for the study of commuting to work reasons is the resident employed population (REP), which is comprised of all employed residents, including both those working outside and within the resident area. The same analysis applies to both the resident student population (RSP).

The unit of analysis in the statistics of commuting are those persons who are residents of Catalonia that are working and residents of Catalonia that are studying. In the 2001 and 2011, when a person was both studying and working they only had to answer questions about mobility related to work. This criteria is not maintained in earlier years.

With respect to age, all editions of the statistics include all people that work or study, with the exception of 2001, which only included information on the population aged 16 years and over.

In the 2001 and el 2011 censuses, part of the working and student population did not have to answer the specific questions on mobility in the census questionnaire and were therefore excluded from the analysis. These were people that:

  • Do not travel because they work or study at home.
  • Work or study in different municipalities, about which only the city of residence is known, but not the work or study city.
  • Have a second residence from which they travel to work or study, about which only the municipality of residence, work or study are known, but the municipality of the second home from which they commute is not available.

Questions about the means of transport have differed across the different editions. In the 2001 and 2011 censuses the data collection categories were modified and it was possible to answer with up to two possibilities in reference to longer journeys.

The 2001 and 2011 censuses asked about the number of journeys per day, which corresponded to the outward journey and the return journey, as well as the journey time from home to the place of work or study. These two variables were absent in the previous editions.

The following categories are defined:

  • Residents that work inside area/Resident students that study inside area: Persons that work/study in the same geographic area in which they reside.
  • Residents that work out-of-area/Resident students that study out-of-area: Resident persons in the selected geographic area that work/study in a different area.
  • Non-residents that work inside area/Non Resident students that study inside area: Persons that work/study in the selected geographic area but reside outside of this area.
  • Resident employed/student population (REP and RSP): Resident employed/Student population = Residents that work inside area/Students that study inside area + Residents that work out-of-area/Students that study out-of-area + employed/students that commute to several municipalities.
  • Located places of work/study (LPW and LPS): = Residents that work inside area/Students that study inside area + Non-residents that work inside area/Non-resident students that study inside area.
  • Difference: The difference between the number of located places of work/study and the resident employed/student population by geographic area.
  • Non-commuting: Works or studies at home.
  • Not applicable: Works or studies in several municipalities, has a second residence at the place of work or study or did not answer this question.
  • Means of transport: In car or van as driver. In car or van as passenger. In bus, coach or minibus. In metro. On motorbike. Walking. On train. On bicycle. Other means.

The Population and Housing Census 2011 includes survey data. The results have been conveniently rounded up and are shown without decimals. Hence, some totals may not coincide with the sum of their disaggregation.

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 "..".

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