District 25, 26, 27, 28

Postal code in the range of 72XXXX - 73XXXX, 75XXXX - 80XXXX
e.g. Kranji, Mandai, Woodland, Upper Thomson, Springleaf, Mandai, Yishun, Canberra Link, Sembawang, Jalan Kayu, Seletar, Yio Chu Kang