# List of boroughs of Oslo

The 15 boroughs of Oslo were created on 1 January 2004. They each have an elected local council with limited responsibilities.
| Borough | Residents | Area | Number |
| Alna | 49 801 | 13,7 km$^2$ | 12 |
| Bjerke | 33 422 | 7,7 km$^2$ | 9 |
| Frogner | 59 269 | 8,3 km$^2$ | 5 |
| Gamle Oslo | 58 671 | 7,5 km$^2$ | 1 |
| Grorud | 27 707 | 8,2 km$^2$ | 10 |
| Grünerløkka | 62 423 | 4,8 km$^2$ | 2 |
| Nordre Aker | 52 327 | 13,6 km$^2$ | 8 |
| Nordstrand | 52 459 | 16,9 km$^2$ | 14 |
| Sagene | 45 089 | 3,1 km$^2$ | 3 |
| St. Hanshaugen | 38 945 | 3,6 km$^2$ | 4 |
| Stovner | 33 316 | 8,2 km$^2$ | 11 |
| Søndre Nordstrand | 39 066 | 18,4 km$^2$ | 15 |
| Ullern | 34 596 | 9,4 km$^2$ | 6 |
| Vestre Aker | 50 157 | 16,6 km$^2$ | 7 |
| Østensjø | 50 806 | 12,2 km$^2$ | 13 |
In addition is Marka (1610 residents), that is administered by several boroughs; and Sentrum (1471 residents, 1.8 km$^2$) that is partially administered by St. Hanshaugen, and in part directly by the city council. As of 1 January 2020, Oslo had 693,494 residents, of which 2386 were not allocated to a borough.

## Former borough structure
### Borough structure 1973–88

From 1973 to 30 June 1988, Oslo had 40 boroughs. Some existed only on paper, since they were to be constituted only when the areas were built.
* Borough 1: Ruseløkka, Skillebekk, Frogner
* Borough 2: Homansbyen, Uranienborg, Majorstua, parts of Fagerborg
* Borough 3: St. Hanshaugen, Gamle Aker, parts of Ila and Fagerborg
* Borough 4: Marienlyst, Ullevål, Lindern, parts of Fagerborg
* Borough 5: Bjølsen, Sagene, parts of Ila
* Borough 6: Sandaker, Åsen, Torshov
* Borough 7: Grünerløkka, Møllergata
* Borough 8: Sinsen, Rodeløkka, parts of Tøyen
* Borough 9: Grønland, Gamlebyen, Kampen, Vålerenga, parts of Tøyen
* Borough 10: Ekeberg, Holtet, Bekkelaget
* Borough 11: Nordstrand
* Borough 12–13–14: Holmlia, Hauketo, Rudene
* Borough 15: Lambertseter
* Borough 16–17: Banderud, Skullerud, Rustad, Bøler, Ulsrud, Tveteråsen
* Borough 18: Ryen, Manglerud, Abildsø
* Borough 19: Skøyen, Oppsal, parts of Trasop
* Borough 20: Etterstad, Helsfyr, Teisen
* Borough 21–22: Tveita, Hellerud, Haugerud, Trosterud, parts of Trasop
* Borough 23 was to take parts of boroughs 20, 24 and 31
* Borough 24–25: Lindeberg, Furuset, Ellingsrud, Haugenstua, Høybråten, Tangerud
* Borough 26: Rommen, Fossum, Stovner
* Borough 27: Romsås
* Borough 28: Rødtvet, Ammerud, parts of Grorud
* Borough 29: Kalbakken, Flaen, parts of Grorud
* Borough 30: Linderud, Veitvet, Sletteløkka
* Borough 31: Løren, Risløkka, Økern
* Borough 32: Lofthus, Årvoll, Tonsenhagen
* Borough 33: Nydalen, Grefsen, Kjelsås
* Borough 34: Tåsen, Korsvoll, Kringsjå
* Borough 35: Vinderen, Ris, Slemdal, Holmenkollen
* Borough 36: Røa, Hovseter, Voksen
* Borough 37: Ullernåsen, Lysaker, Bestum
* Borough 38: Huseby, Smestad, Skøyen
* Borough 39: Bygdøy
* Borough 40: Marka, the islands

### Borough structure 1988–2004

From 1985 to 1988, the boroughs of Stovner, Røa, Gamle Oslo and Søndre Nordstrand were trials for the new system. From 1 July 1988 to 31 December 2003, Oslo had 25 boroughs:
* Borough 1: Bygdøy–Frogner
* Borough 2: Uranienborg–Majorstuen
* Borough 3: St.Hanshaugen–Ullevål
* Borough 4: Sagene–Torshov
* Borough 5: Grünerløkka–Sofienberg
* Borough 6: Gamle Oslo
* Borough 7: Ekeberg–Bekkelaget
* Borough 8: Nordstrand
* Borough 9: Søndre Nordstrand
* Borough 10: Lambertseter
* Borough 11: Bøler
* Borough 12: Manglerud
* Borough 13: Østensjø
* Borough 14: Helsfyr-Sinsen
* Borough 15: Hellerud
* Borough 16: Furuset
* Borough 17: Stovner
* Borough 18: Romsås
* Borough 19: Grorud
* Borough 20: Bjerke
* Borough 21: Grefsen–Kjelsås
* Borough 22: Sogn
* Borough 23: Vinderen
* Borough 24: Røa
* Borough 25: Ullern
In addition Sentrum and Marka.