An estimated 70,000 people living close to the Iran-Iraq border have been made homeless and the government is struggling to get aid to those in need.
The worst damage appeared to be in the Kurdish town of Sarpol-e-Zahab in the western Iranian province of Kermanshah.
Rouhani vowed not to forget about the people and rural areas affected by the natural disaster: "11,000 rural houses and about 4,500 urban houses were destroyed in this quake and we need to build 30,000 new houses".
Survivors spent Monday night in makeshift camps or in the open.
In a televised interview on Monday, IRGC Commander Major General Mohammad Ali Jafari said his forces are working in close cooperation with the Army to help victims of the massive natural disaster in western Iran.
Latest figures indicate that nearly 430 people lost their lives in the natural disaster and over 7,000 were injured, PressTV reported.
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The head of the elite Revolutionary Guards, Major General Mohammad Ali Jafari, said the immediate need was for tents, water and food.
She said now that rescue operations had ended, the priority was getting people into shelters as quickly as possible, and that the delivery of aid was on track.
Iran is one of the most seismically active countries in the world. Tremors were felt as far away as Turkey, Israel, Kuwait and Pakistan.
Hundreds of ambulances and dozens of army helicopters were reported to have joined the rescue effort after supreme leader Ayatollah Ali Khamenei ordered the government and armed forces to mobilise "all their means".
About 30 Red Crescent teams were working in the natural disaster zone.