en.wikipedia.org/wiki/Mainz

The claim says the most recent city council election was in 2019. Mainz’s official election archive contradicts that: it lists a City council election 2024 and provides the result of the 2024 city council election in Mainz. That means 2019 is no longer the most recent election.

So the sentence is factually incorrect because it identifies the wrong election year as the latest one.

The infobox gives Mainz’s population on 2024-12-31 as 222,889. Two official sources contradict that number:

• Mainz’s own statistics page reports 224,030 residents with primary residence in Mainz on December 31, 2024.
• The Statistical Office of Rhineland-Palatinate reports a preliminary estimate of 224,734 residents for Mainz on December 31, 2024.

These are different counting methods, but both official figures are well above 222,889. That means the specific number shown in the article for 2024-12-31 is incorrect.