Officials estimate about 10,000 people have died in Bhuj alone - others say more.
Fours days after the earthquake hit, Indian officials and foreign relief workers say hopes are fading of finding more survivors.
However, in a glimmer of hope, rescue teams in Bhuj, the city near the epicentre of the quake, pulled two more people alive from collapsed buildings.
A Swiss team saved a young girl and the Indian army found a 90-year-old woman, apparently saved by a sewing machine which shielded her head from falling rubble.
Prime Minister Atal Behari Vajpayee has been touring Gujarat's largest city Ahmedabad and Bhuj inspecting the damage.
It is now feared that as many as 20,000 people may have died, and there are thousands of bodies still buried under collapsed buildings.
Mr Vajpayee repeated appeals for $1.5bn from international loans and called on Indians to donate to a government fund for the Gujarati victims.
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A BBC correspondent says India's public finances were not prepared for a shock like this, and reconstruction will be a huge task.
On Sunday, big new tremors, hunger and thirst added to the anguish of tens of thousands of homeless earthquake survivors.
Foreign rescue teams joined the search for survivors in the rubble of western India's worst hit towns and cities.
Five people, however, were rescued in Bhuj. Another was found alive in Ahmedabad, and two survivors unearthed in Anjar - one of them a three year old girl.
"She was chanting some Arabic verses," said a soldier who participated in the rescue. "She was totally unscathed."
Officials estimate about 10,000 people have died in Bhuj alone - others say more.
They say 95% of buildings in the city are uninhabitable.
The living are struggling to dispose of the dead. Across the town large funeral pyres are being lit.
Survivors say they have hundreds of bodies to cremate and fear of disease is now growing.
Relief is starting to arrive, but facilities in Bhuj are minimal. There is no running water, no electricity, no shelter and limited food.
Many survivors are simply fleeing the town, taking with them whatever belongings they can carry.
Reports suggest outlying villages in this region of Gujurat have been just as badly hit and they are still waiting for outside aid to arrive.
Foreign aid
On Monday, residents of the southeast Pakistan city of Hyderabad - some 300km (180 miles) northwest of Bhuj - fled their homes in panic, terrified that another earthquake was about to hit.
The Indian Government announced it was seeking a $1.5bn loan from the World Bank and the Asian Development Bank to help reconstruction of the devastated areas.
The country is facing months, possibly years of recovery work following the earthquake.
The Federation of Indian Chambers of Commerce and Industry said that the cost of the earthquake to the Indian economy would probably exceed $800m.
Massive operation
Despite a massive relief operation launched by the Indian authorities, the rescue effort is struggling to cope with the scale of the disaster and some of the worst-hit areas are still without any help.
The initial quake, measuring 7.9 on the Richter scale, was felt in neighbouring Pakistan, where authorities said 12 people had died, and as far away as Nepal and Bangladesh.
It was the most powerful quake to strike India since 1950, when an 8.5 magnitude quake killed 1,538 people in north-eastern Assam state.
It appears to be the world's most deadly earthquake since about 17,000 people died in Turkey in 1999.