Vihaan uiga igoa sili: Toaga, Fiafia, Faauo, Foafoa, Volatile. Aumai Vihaan uiga o le suafa.
Tiwa uiga faaiu sili: Gauai, Agalelei, Volatile, Fiafia, Laki. Aumai Tiwa uiga o faaiu.
Surnames taatele ma igoa Vihaan: Patel, Shah, Verma, Tiwari, Tiwa. Aumai Lisi o surnames ma igoa Vihaan.
O le tele o igoa tutusa ai ma faaiu Tiwa: Vihaan. Aumai Igoa e aumai faatasi Tiwa.
Ogatasi o Vihaan ma Tiwa o 79%. Aumai Ogatasi o Vihaan ma Tiwa.