| Code | Name | Region |
|---|---|---|
| NLSTB | Stevensbeek | NB |
| NLSVW | Stevensweert | LI |
| NLSVT | Stichtse Vecht | UT |
| NLSKL | Stieltjeskanaal | DR |
| NLSTN | Stiens | |
| NLSLG | Stokkelaarsbrug | UT |
| NLSOS | Soesterberg | |
| NLSOM | Someren | |
| NLSIJ | Sommelsdijk | ZH |
| NLSON | Son | NB |
| NLSBR | Son En Breugel | NB |
| NLSOD | Sondel | FR |
| NLSPD | Spaarndam | |
| NLSPK | Spakenburg | |
| NLSPB | Spanbroek | |
| NLSPA | Spaubeek | |
| NLSEK | Spierdijk | NH |
| NLSJK | Spijk | |
| NLSPI | Spijkenisse | |
| NLSCA | Sprang | NB |
| NLSPC | Sprang-capelle | NB |
| NLSPR | Sprundel | NB |
| NLSAT | Stad Aan 't Haringvliet | ZH |
| NLSDM | Stadsdam | UT |
| NLSTK | Stadskanaal | |
| NLSPG | Stampersgat | |
| NLSJO | Sintjohannesga | FR |
| NLSRJ | Sirjansland | ZE |
| NLSIT | Sittard | |
| NLSIG | Sittard-geleen | LI |
| NLLGR | Slagharen | OV |
| NLSWK | Sleeuwijk | |
| NLSLD | Sliedrecht | ZH |
| NLSKG | Slijkenburg | FR |
| NLSKM | Slikkendam | ZH |
| NLSLI | Slikkerveer | |
| NLSLO | Slochteren | GR |
| NLSDP | Slootdorp | NH |
| NLSLT | Sloten | FR |
| NLSLS | Sluis | |
| NLSLU | Sluiskil | ZE |
| NLSML | Smallingerland | |
| NLSMI | Smilde | DR |
| NLSNK | Sneek | |
| NLSNW | Snelrewaard | |
| NLSOE | Soest | |
| NLSIV | Silvolde | |
| NLSIM | Simpelveld | LI |
| NLSAR | Sint Andries | GE |
| NLSAN | Sint Annaparochie | FR |