Population during each mayor's tenure
2 mayors, ranked by how population changed from their first day in office, next to Switzerland over the same months. Politare shows what happened during a tenure; it does not claim the office-holder caused it.
| # | Mayor | City | In office | Total | vs Switzerland | Per year | Chart |
|---|---|---|---|---|---|---|---|
| 1 |  Corine Mauch | Zürich | 1 May 2009 – 27 May 2026 | +21.3% 2008 → 2025 | +2.4 pts Switzerland +18.8% | +1.1%/yr | |
| 2 | Alexander Tschäppät | Bern | 1 Jan 2005 – 16 Jan 2017 | +8.2% 2004 → 2016 | −5.1 pts Switzerland +13.3% | +0.7%/yr | |
| 3 | Elmar Ledergerber | Zürich | 15 May 2002 – 1 May 2009 | +6.9% 2001 → 2008 | +1.0 pts Switzerland +5.8% | +1.0%/yr | |
| 4 | GFL Alec von Graffenried | Bern | 16 Jan 2017 – 1 Jan 2025 | +3.9% 2016 → 2024 | −3.7 pts Switzerland +7.6% | +0.5%/yr | |
| 5 | Klaus Baumgartner | Bern | 24 Jan 1993 – 1 Jan 2005 | −6.2% 1992 → 2004 | −13.7 pts Switzerland +7.5% | −0.5%/yr |
Sorted by total, highest first. Every row is indexed to the last count complete before the first day in office ("from" marks a start that had to move because that count had no data, or because the period cut it); Switzerland is measured over the same months. Levels are per cent changes, rates are differences in %; "per year" compounds levels and divides rates. Tenures with under 12 months, or under three observations, are left out. thousands, average of the year (permanent residents) · FSO, the commune's permanent resident population, the mean of 1 January and 31 December, from STAT-TAB (px-x-0102020000_201) · city (the commune) data · as of Jul 2025.