Hundreds of firefighters have been battling the flames, which have been fanned by winds of up to 60mph (100km/h) and have devastated the seaside village of Mati, engulfing homes and vehicles. Several dozen people are still missing, while throughout the day more bodies are being discovered.
"Residents and visitors in the area did not escape in time even though they were a few metres from the sea or in their homes", fire brigade spokeswoman Stavroula Maliri said.
Eleven people were seriously injured, he added.
In one tragic location, 26 adults and children died in a field about 100 feet from the beach.
Anticipating questions about the high death toll and the emergency planning, Tsipras stressed the "extreme" scale of the fires.
Residents told of horrifying scenes as flames engulfed a seaside village, where the only way out for some was to run for the water.
A motorcyclist looks at smoldering shrubbery on a road near Kineta, west of Athens on Monday.
A firefighter sprays water on the fire in the town of Mati, east of Athens on July 23.
A view of burned cars after a fire in Argyra Akti, Mati, close to Nea Makri, in Attica, Greece, July 24, 2018.
The death toll jumped to at least 74 Tuesday, according to fire officials.
With most of the corpses badly charred, identification of the dead will be challenging, experts said. Other areas hit by fire include the island of Crete.
Dimitris Tzanakopoulos said that at least 69 other people have been hospitalised with injuries.
Greek officials have asked for United States drones "to observe and detect any suspicious activity" as it emerged that 15 fires had started at the same time in three different areas near Athens.
Zoe Holohan is in hospital after suffering burns to her head and hands
Evacuees were transferred to hotels and military camps, while anxious relatives flocked to the area.
A toll-free number was also set up for those trying to report people missing in the fires.
In all, 47 brush and forest fires broke out across Greece on Monday and early today, with a lot of them quickly extinguished, the fire department said.
Firefighters are tackling the remaining areas in the two main blazes near the capital, helped by water-dropping aircraft.
One of the fires began to the west of Athens near the town of Kineta, with another starting to the north-east near the port of Rafina - the latter seeing the worst of the casualties.
In 2016, Greece, along with Cyprus, was one of the first two countries to respond when Israel asked allies to send firefighting planes and other equipment and personnel to help fight blazes that burned thousands of acres and damaged hundreds of homes in the north of the country.
I could see some of them lying on the ground as fog covered the place and a toxic smell spread through the atmosphere.
Mati is in the eastern Rafina region, a popular spot for Greek holiday-makers, particularly pensioners and children at camps, 29 km (18 miles) east of the capital.
Prime Minister Alexis Tsipras reportedly returned to Athens from Bosnia on Monday to meet with fire chiefs and government officials.
Officials raised the possibility the blazes could have been started deliberately by criminals out to ransack abandoned homes.
Poland Foreign Ministry also announced the fires claimed the lives of two Polish tourists.
The death toll is nearly certain to surpass the 77 people who perished in blazes that ripped through the southern island of Evia in 2007.
CVS pharmacist fired for refusing to fill hormone prescription for trans woman
CVS, however, fired its employee and apologized to Hall on Friday. "CVS Health extends its honest apologies to Ms. Hall had received three prescriptions April 24 from her doctor, who specializes in hormone therapy, she said.