Population in largest city rose 0.776% to 6.67 mil in Spain in 2021, according to the National Statistical Office.
Historically, population in largest city in Spain reached an all time high of 6.67 mil in 2021 and an all time low of 2.47 mil in 1960. When compared to Spain's main peers, population in largest city in France amounted to 11.1 mil, 4.28 mil in Italy, 3.79 mil in Morocco and 2.97 mil in Portugal in 2021.
Spain has been ranked 32nd within the group of 153 countries we follow in terms of population in largest city, 4 places below the position seen 10 years ago.
| Population in the Largest City | Unit | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
| Algeria | mil | 2.59 | 2.63 | 2.66 | 2.69 | 2.73 | ||||||||||||||||
| Austria | mil | 1.83 | 1.86 | 1.88 | 1.90 | 1.92 | ||||||||||||||||
| Belgium | mil | 2.00 | 2.02 | 2.03 | 2.05 | 2.07 | ||||||||||||||||
| France | mil | 10.7 | 10.8 | 10.8 | 10.9 | 11.0 | ||||||||||||||||
| Germany | mil | 3.51 | 3.53 | 3.54 | 3.55 | 3.56 | ||||||||||||||||
| Ireland | mil | 1.16 | 1.18 | 1.19 | 1.20 | 1.21 | ||||||||||||||||
| Italy | mil | 4.11 | 4.15 | 4.18 | 4.21 | 4.23 | ||||||||||||||||
| Mauritania | mil | 1.06 | 1.10 | 1.15 | 1.21 | 1.26 | ||||||||||||||||
| Morocco | mil | 3.59 | 3.62 | 3.65 | 3.68 | 3.72 | ||||||||||||||||
| Portugal | mil | 2.88 | 2.90 | 2.91 | 2.93 | 2.94 | ||||||||||||||||
| Slovenia | mil | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
| Spain | mil | 6.22 | 6.31 | 6.40 | 6.50 | 6.56 | ||||||||||||||||
| Switzerland | mil | 1.33 | 1.34 | 1.36 | 1.37 | 1.38 | ||||||||||||||||
| Tunisia | mil | 2.18 | 2.22 | 2.25 | 2.29 | 2.33 |
Helgi Library 
