Stats for the cities in Sweden are hard to come by. You basically have to follow the media and note every single murder/homicide reported in the media to be able to find out stats (which is not definite in other words).
Currently it seems like this is the numbers (1st on january - 25th december).
Sweden (pop 10 mil)
Total: 111
Rate: 1.1 (Basically the same rate since forever)
Greater Stockholm (pop 2.2 mil):
Total: 29 (Down from approx 45 last year)
Rate: 1.3
Gothenburg (pop 570 000)
13 (up from 11 last year)
rate: 2.2
Malmö (pop 333 000).
13
Rate: 3.9
The stats in itself are not that remarkable (Except perhaps Malmös rate which is one of the highest in Western Europe for several years in a row), but what is remarkable is that the majority of these are shootings. A total of 45 people has been shot to death in Sweden in 2018, which is breaking the former record from last year and one of the highest rates in western europe.
The murder-by-gun rate is 10 times higher for young males in Sweden than Germany for example.
(Deadly Shootings of males between the ages of 15 - 29 years old, per 100.000 pop.)