If you require explanations concerning the data, the abbreviations or the usage of the interactive maps, please click on »Help«. Please, take also a look at the list of answers to FAQs and to the glossary. Under »Refs«, you will find links to other relevant web sites and references.
»City Population« can also found in Facebook with a list of updates. The entries of this list are more detailed than here and can be commented. Furthermore, you can be informed about updates by using Twitter.
If you know better population data, if you have found an error or if you have suggestions for improving the web site, please send me an e-mail. Notice: I read the e-mails not daily.