how many casualties were there because of it?
3 million people affected with a possible death toll of more than 316,000
Casualties
The earthquake struck in the most populated area of the country. The International Federation of Red Cross and Red Crescent Societies estimated that as many as 3 million people had been affected by the quake. In mid February 2010, the Haitian government reported the death toll to have reached 230,000. However, an investigation by Radio Netherlands has questioned the official death toll, reporting an estimate of 92,000 deaths as being a more realistic figure. On the first anniversary of the earthquake, 12 January 2011, Haitian Prime Minister Jean-Max Bellerive said the death toll from the quake was more than 316,000, raising the figures from previous estimates.
what happened after the earthquake in haiti 2010 By 24 January 2010, at least 52 aftershocks measuring 4.5 or greater had been recorded. An estimated three million people were affected by the quake. what was the richter scale of it? catastrophic magnitude 7.0 M on the Moment magnitude scale
Jean-Max Bellerive said the death toll from the quake was more than 316,000, raising the figures from previous estimates. Death toll estimates range from 100,000 to about 160,000 to Haitian government figures from 220,000 to 316,000. An estimated three million people were affected, death toll estimates range from 100,000 to about 160,000
2010 Haiti earthquake 2010 Haiti earthquake 2010 Haiti earthquake
Casualties Introduction Introduction
 On the first anniversary of the earthquake, 12 January 2011, Haitian Prime Minister Jean-Max Bellerive said the death toll from the quake was more than 316,000, raising the figures from previous estimates. Death toll estimates range from 100,000 to about 160,000 to Haitian government figures from 220,000 to 316,000, An estimated three million people were affected by the quake. Death toll estimates range from 100,000 to about 160,000 to Haitian government figures from 220,000 to 316,000, although these latter figures are a matter of some dispute. 
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2010 Haiti earthquake [SEP] Casualties
While the vast majority of casualties were Haitian civilians, the dead included aid workers, embassy staff, foreign tourists—and a number of public figures, including Archbishop of Port-au-Prince Monsignor Joseph Serge Miot, aid worker Zilda Arns and officials in the Haitian government, including opposition leader Michel "Micha" Gaillard. Also killed were a number of well-known Haitian musicians and sports figures, including thirty members of the Fédération Haïtienne de Football. At least 85 United Nations personnel working with MINUSTAH were killed, among them the Mission Chief, Hédi Annabi, his deputy, Luiz Carlos da Costa, and police commissioner Douglas Coates. Around 200 guests were killed in the collapse of the Hôtel Montana in Port-au-Prince.