Seismic alarms were triggered when the area began rocking, with many people still at home in the morning.
However, as it stands there have been no reports of injuries to residents or damages to buildings, in a region which is home to upwards of 60 million inhabitants.
A flyover from Mexico City’s public security ministry revealed there were no fallen buildings.
The massive tremor began shaking the town of La Crucecita, on the west coast of Mexico, at 09.29AM local time (4.29PM BST), with the USGS stating the quake occurred 71 kilometres beneath the surface.
Several videos during the earthquake show the ground moving violently as telephone masts sway violently.
One person posted on Twitter: “We just had a 7.1 earthquake in Mexico City, apparently without consequences, but still scary, as always.”
Another reported to Volcano Discovery: “Heard the alarm, went outside with my pregnant wife. didn’t feel anything but looked down and saw a puddle from last night’s rain trembling.
“Thirty seconds later the ground was shaking side to side, for about 30 seconds, then it calmed down.”
A third said: “Long wave type shaking, door and frames moved some books fell down from shelves. My apartment is located on the 4th floor.”
This is a breaking story. More to follow.