Prefix 31 contains 48 postcode records across 15 mapped localities in Netherlands.
| Postal Code | Locality / District | Administrative Area | Coordinates |
|---|---|---|---|
| Schiedam | Schiedam Municipality · South Holland | 51.9163, 4.3991 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9175, 4.4099 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9102, 4.4098 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9053, 4.4042 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9051, 4.3818 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9102, 4.3946 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9135, 4.3872 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9189, 4.3819 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9221, 4.3945 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9337, 4.3792 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9324, 4.3702 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9422, 4.368 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9434, 4.3808 | |
| Schiedam | Schiedam Municipality · South Holland | 51.9314, 4.4041 | |
| Vlaardingen | Gemeente Vlaardingen · South Holland | 51.9094, 4.338 | |
| Vlaardingen | Gemeente Vlaardingen · South Holland | 51.9114, 4.317 | |
| Vlaardingen | Gemeente Vlaardingen · South Holland | 51.9019, 4.3308 | |
| Vlaardingen | Gemeente Vlaardingen · South Holland | 51.9087, 4.3522 | |
| Vlaardingen | Gemeente Vlaardingen · South Holland | 51.9172, 4.357 | |
| Vlaardingen | Gemeente Vlaardingen · South Holland | 51.9288, 4.3516 | |
| Vlaardingen | Gemeente Vlaardingen · South Holland | 51.9362, 4.3463 | |
| Vlaardingen | Gemeente Vlaardingen · South Holland | 51.9252, 4.3268 | |
| Maassluis | Maassluis Municipality · South Holland | 51.9202, 4.2622 | |
| Maassluis | Maassluis Municipality · South Holland | 51.9263, 4.2536 | |
| Maassluis | Maassluis Municipality · South Holland | 51.9151, 4.253 | |
| Maassluis | Maassluis Municipality · South Holland | 51.9244, 4.2424 | |
| Maassluis | Maassluis Municipality · South Holland | 51.9328, 4.2319 | |
| Maassluis | Maassluis Municipality · South Holland | 51.9384, 4.225 | |
| Maassluis | Maassluis Municipality · South Holland | 51.9366, 4.2425 | |
| Hoek van Holland | Rotterdam Municipality · South Holland | 51.9813, 4.1335 | |
| Maasland | Midden-Delfland Municipality · South Holland | 51.9368, 4.2718 | |
| Rhoon | Albrandswaard Municipality · South Holland | 51.8606, 4.423 | |
| Rhoon | Albrandswaard Municipality · South Holland | 51.8563, 4.4249 | |
| Rhoon | Albrandswaard Municipality · South Holland | 51.8559, 4.4756 | |
| Rotterdam-Albrandswaard | Albrandswaard Municipality · South Holland | 51.8697, 4.4185 | |
| Poortugaal | Albrandswaard Municipality · South Holland | 51.8559, 4.3952 | |
| Poortugaal | Albrandswaard Municipality · South Holland | 51.8492, 4.4016 | |
| Poortugaal | Albrandswaard Municipality · South Holland | 51.863, 4.3985 | |
| Rozenburg | Rotterdam Municipality · South Holland | 51.9046, 4.2462 | |
| Hoogvliet Rotterdam | Rotterdam Municipality · South Holland | 51.8615, 4.3655 | |
| Hoogvliet Rotterdam | Rotterdam Municipality · South Holland | 51.8538, 4.3619 | |
| Hoogvliet Rotterdam | Rotterdam Municipality · South Holland | 51.868, 4.3486 | |
| Hoogvliet Rotterdam | Rotterdam Municipality · South Holland | 51.8683, 4.3671 | |
| Pernis Rotterdam | Rotterdam Municipality · South Holland | 51.8891, 4.3886 | |
| Vondelingenplaat Rotterdam | Rotterdam Municipality · South Holland | 51.8877, 4.3549 | |
| Botlek Rotterdam | Rotterdam Municipality · South Holland | 51.8794, 4.2741 | |
| Europoort Rotterdam | Rotterdam Municipality · South Holland | 51.9336, 4.1571 | |
| Maasvlakte Rotterdam | Rotterdam Municipality · South Holland | 51.9392, 4.0783 | |
| Maasvlakte Rotterdam | Rotterdam Municipality · South Holland | 51.9444, 4.0289 |
Based on 49 records, 48 postal code values and 15 mapped localities. Coordinate coverage is 100.0%.
| Postal code | Locality | Administrative path | Coordinates |
|---|---|---|---|
| 3111 | Schiedam | South Holland / Schiedam Municipality | 51.9163, 4.3991 |
| 3112 | Schiedam | South Holland / Schiedam Municipality | 51.9175, 4.4099 |
| 3113 | Schiedam | South Holland / Schiedam Municipality | 51.9102, 4.4098 |
| 3114 | Schiedam | South Holland / Schiedam Municipality | 51.9053, 4.4042 |
| 3115 | Schiedam | South Holland / Schiedam Municipality | 51.9051, 4.3818 |
| 3116 | Schiedam | South Holland / Schiedam Municipality | 51.9102, 4.3946 |