Following the latest reform of January 1, 2004, the city is divided into fifteen boroughs (bydeler) that are to a considerable extent self governed. Each borough is responsible for local services not overseen by the City Council, such as social services, basic healthcare, and kindergartens. For convience, and as most of the boroughs do not contain that much of interest, the city can be divided into five larger districts.
Sentrum (Sentrum) Central downtown area.
West (Bygdøy) "The Museum Peninsula" and the poshest area in Norway
Inner West (St. Hanshaugen, Frogner)
Inner East (Sagene, Grünerløkka, Gamle Oslo)
Outer West (Ullern, Vestre Aker, Nordre Aker)
Outer East (Alna, Bjerke, Grorud, Stovner, Nordstrand, Søndre Nordstrand, Østensjø)