| Timezone | Central European Time |
| Area | 480.8 km² |
| Population | 919,073 (More Details) |
|
| Male Population | 454,792 (49.5%) |
| Female Population | 464,282 (50.5%) |
| Median Age | 36.4 |
| Postal Codes | 0001, 0010, 0015 (659 more) |
| Area Code | 2 |
662 Postal Codes in Oslo
| Postal Code | City | Administrative Region | Population | Area |
|---|
| 0001 | Oslo | Oslo | — | — |
| 0010 | Oslo | Oslo | 185 | 44,553 m² |
| 0015 | Oslo | Oslo | 497 | 85,764 m² |
| 0018 | Oslo | Oslo | — | — |
| 0021 | Oslo | Oslo | — | — |
| 0024 | Oslo | Oslo | — | — |
| 0025 | Oslo | Oslo | — | — |
| 0026 | Oslo | Oslo | 662 | 2,499 m² |
| 0028 | Oslo | Oslo | — | — |
| 0030 | Oslo | Oslo | — | — |
| 0031 | Oslo | Oslo | — | — |
| 0032 | Oslo | Oslo | — | — |
| 0033 | Oslo | Oslo | — | — |
| 0034 | Oslo | Oslo | — | — |
| 0037 | Oslo | Oslo | — | — |
| 0040 | Oslo | Oslo | — | — |
| 0045 | Oslo | Oslo | — | — |
| 0046 | Oslo | Oslo | — | — |
| 0047 | Oslo | Oslo | — | — |
| 0048 | Oslo | Oslo | — | — |
| 0050 | Oslo | Oslo | 1,314 | 30,019 m² |
| 0051 | Oslo | Oslo | — | — |
| 0055 | Oslo | Oslo | — | — |
| 0060 | Oslo | Oslo | — | — |
| 0080 | Oslo | Oslo | — | — |
| 0101 | Oslo | Oslo | — | — |
| 0102 | Oslo | Oslo | — | — |
| 0103 | Oslo | Oslo | — | — |
| 0104 | Oslo | Oslo | — | — |
| 0105 | Oslo | Oslo | — | — |
| 0106 | Oslo | Oslo | — | — |
| 0107 | Oslo | Oslo | — | — |
| 0109 | Oslo | Oslo | — | — |
| 0110 | Oslo | Oslo | — | — |
| 0111 | Oslo | Oslo | — | — |
| 0112 | Oslo | Oslo | — | — |
| 0113 | Oslo | Oslo | — | — |
| 0114 | Oslo | Oslo | — | — |
| 0115 | Oslo | Oslo | — | — |
| 0116 | Oslo | Oslo | — | — |
| 0117 | Oslo | Oslo | — | — |
| 0118 | Oslo | Oslo | — | — |
| 0119 | Oslo | Oslo | — | — |
| 0120 | Oslo | Oslo | — | — |
| 0121 | Oslo | Oslo | — | — |
| 0122 | Oslo | Oslo | — | — |
| 0123 | Oslo | Oslo | — | — |
| 0124 | Oslo | Oslo | — | — |
| 0125 | Oslo | Oslo | — | — |
| 0128 | Oslo | Oslo | — | — |
| 0129 | Oslo | Oslo | — | — |
| 0130 | Oslo | Oslo | — | — |
| 0131 | Oslo | Oslo | — | — |
| 0132 | Oslo | Oslo | — | — |
| 0133 | Oslo | Oslo | — | — |
| 0134 | Oslo | Oslo | — | — |
| 0135 | Oslo | Oslo | — | — |
| 0136 | Oslo | Oslo | — | — |
| 0137 | Oslo | Oslo | — | — |
| 0138 | Oslo | Oslo | — | — |
| 0139 | Oslo | Oslo | 866 | 0.324 km² |
| 0151 | Oslo | Oslo | 1,486 | 0.172 km² |
| 0152 | Oslo | Oslo | 605 | 0.115 km² |
| 0153 | Oslo | Oslo | 676 | 69,786 m² |
| 0154 | Oslo | Oslo | 992 | 45,056 m² |
| 0155 | Oslo | Oslo | 2,642 | 55,541 m² |
| 0157 | Oslo | Oslo | 332 | 41,145 m² |
| 0158 | Oslo | Oslo | 320 | 62,848 m² |
| 0159 | Oslo | Oslo | 662 | 57,031 m² |
| 0160 | Oslo | Oslo | 786 | 0.113 km² |
| 0161 | Oslo | Oslo | 912 | 0.116 km² |
| 0162 | Oslo | Oslo | 331 | 41,986 m² |
| 0164 | Oslo | Oslo | 1,260 | 0.111 km² |
| 0165 | Oslo | Oslo | 518 | 92,422 m² |
| 0166 | Oslo | Oslo | 307 | 85,389 m² |
| 0167 | Oslo | Oslo | 1,370 | 0.141 km² |
| 0168 | Oslo | Oslo | 881 | 0.126 km² |
| 0169 | Oslo | Oslo | 618 | 65,756 m² |
| 0170 | Oslo | Oslo | 653 | 0.109 km² |
| 0171 | Oslo | Oslo | 1,162 | 0.212 km² |
| 0172 | Oslo | Oslo | 1,440 | 0.194 km² |
| 0173 | Oslo | Oslo | 296 | 58,940 m² |
| 0174 | Oslo | Oslo | 289 | 36,692 m² |
| 0175 | Oslo | Oslo | 1,085 | 0.118 km² |
| 0176 | Oslo | Oslo | 642 | 68,079 m² |
| 0177 | Oslo | Oslo | 696 | 0.133 km² |
| 0178 | Oslo | Oslo | 858 | 0.107 km² |
| 0179 | Oslo | Oslo | 981 | 96,072 m² |
| 0180 | Oslo | Oslo | 331 | 79,370 m² |
| 0181 | Oslo | Oslo | 331 | 58,510 m² |
| 0182 | Oslo | Oslo | 614 | 86,919 m² |
| 0183 | Oslo | Oslo | 639 | 98,245 m² |
| 0184 | Oslo | Oslo | 660 | 50,737 m² |
| 0185 | Oslo | Oslo | 656 | 63,528 m² |
| 0186 | Oslo | Oslo | 1,293 | 0.117 km² |
| 0187 | Oslo | Oslo | 651 | 0.107 km² |
| 0188 | Oslo | Oslo | 658 | 81,809 m² |
| 0190 | Oslo | Oslo | 1,252 | 0.147 km² |
| 0191 | Oslo | Oslo | 3,270 | 0.466 km² |
| 0192 | Oslo | Oslo | 2,899 | 0.491 km² |
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Oslo Demographic Information
| Population | 919,073 |
| Population Density | 1,911 / km² |
| Male Population | 454,792 (49.5%) |
| Female Population | 464,282 (50.5%) |
| Median Age | 36.4 |
| Male Median Age | 35.9 |
| Female Median Age | 36.8 |
| Businesses in Oslo | 79,019 |
| Population (1975) | 551,590 |
| Population (2000) | 735,292 |
| Population change from 1975 to 2015 | +66.6% |
| Population change from 2000 to 2015 | +25% |
