Best cities for retirement in Sweden

Every city has almost everything other cities have and also something special to offer so hard to pick few out of those, it depends on personal choice.

Normally people like to live mixed with pensioners, families with children, singles and so on so as to my knowledge there are no any specific pensioner's areas. But some villages in northern Sweden have automatically become pensioner's areas since others leave the area for major cities where they easily can find jobs, pensioners don't have that issue so only they stay. 

The Swedish association for senior citizens and some other organisations have their local branches around the country and organize frequently different kind of activities. 

Germans like to buy old farmhouses in Sweden to use as their summerhouses, many of them are about to retire. What they do is first come here with their caravans and travel around the country for few summer vacations until they find their dream place, in the mean time they get a chance to practice their Swedish language skills. I think that is a keen way to find a good retirement place in Sweden.