The total was well below the $101 million that GOP rival Mitt Romney and the Republican National Committee raised last month. July is the third straight month that Romney and the Republican Party have raised more money than Obama and the Democratic Party.
Obama is also facing an onslaught of fundraising by well-funded, GOP-leaning political action committees.
Obama's campaign says 98 percent of the $75 million it raised came from people who donated in amounts of $250 or less.
The campaign says the average donation was about $53.