- Sailly (78440)
- Saint-arnoult-en-yvelines (78730)
- Saint-cyr-l’ecole (78210)
- Saint-forget (78720)
- Saint-germain-de-la-grange (78640)
- Saint-germain-en-laye (78100)
- Saint-hilarion (78125)
- Saint-illiers-la-ville (78980)
- Saint-illiers-le-bois (78980)
- Saint-lambert (78470)
- Saint-leger-en-yvelines (78610)
- Saint-martin-de-brethencourt (78660)
- Saint-martin-des-champs (78790)
- Saint-martin-la-garenne (78520)
- Saint-nom-la-breteche (78860)
- Saint-remy-l’honore (78690)
- Saint-remy-les-chevreuse (78470)
- Sainte-mesme (78730)
- Sartrouville (78500)
- Saulx-marchais (78650)
- Senlisse (78720)
- Septeuil (78790)
- Soindres (78200)
- Sonchamp (78120)
- Tacoignieres (78910)
- Tessancourt-sur-aubette (78250)
- Thiverval-grignon (78850)
- Thoiry (78770)
- Tilly (78790)
- Toussus-le-noble (78117)
- Trappes (78190)
- Triel-sur-seine (78510)