| Postal Code information | |
|---|---|
| Place | Porsgrunn |
| Post Code | 3910, 3911, 3912, 3913, 3914, 3915, 3916, 3917, 3918, 3919, 3920, 3921, 3922, 3924, 3925, 3928, 3929, 3930, 3931, 3933, 3936, 3937, 3940, 3941, 3942, 3943, 3944, 3946, 3948, 3949 |
| County | Porsgrunn |
| State | Vestfold og Telemark |
| Time zone | Europe/Oslo |