Violent offences during each governing mayor's tenure

Every governing mayor since 1991, ranked by how the violent offences changed from their first day in office, next to Norway over the same months. Politare shows what happened during a tenure; it does not claim the office-holder caused it.

#	Governing mayor	City	In office	Total	vs Norway	Per year	Chart
1	Raymond Johansen	Oslo	21 Oct 2015 – 25 Oct 2023	+183 per 100k 2015 → 2023	+103 per 100k Norway +80 per 100k	+23 per 100k/yr
2	Stian Berger Røsland	Oslo	29 Sep 2009 – 21 Oct 2015	−128 per 100k 2009 → 2015	−94 per 100k Norway −35 per 100k	−21 per 100k/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); Norway is measured over the same months. Levels are per cent changes, rates are differences in per 100k; "per year" compounds levels and divides rates. Tenures with under 12 months, or under three observations, are left out. per 100,000 residents, average of two years · Statistics Norway, offences reported to the police by scene of crime (table 08487): violence and maltreatment, the yearly average of each two years (2007-2008 to 2024-2025), dated between them, over the population on 1 January of the second year · city (offences committed in the municipality) data · as of Jul 2026.