Officials have told Agence France Presse that 30 people are dead, and 800 are injured.
Five aftershocks have followed the quake, the largest being 5.2 magnitude.
According to a USA Today report, several frightened residents have poured into the streets.
The Russian-made reactor survived the quake, and Russian State News agency RIA Novosti has quoted an official as saying, "The earthquake in no way affected the normal situation at the reactor, personnel continue to work in the normal regime and radiation levels are fully within the norm."
Iran sits near four major tectonic plates and is subject to almost daily tremors.
Nuclear talks with Iran recently collapsed, and Iran has vowed to open two yellow cake uranium mines.
More From Business Insider
- HTML5 vs. Apps: Where The Debate Stands Now, And Why It Matters
- A Satellite Tour Of North Korea's Nuclear Facilities
- North Korea's Nuclear Talk Is Making China Very Nervous
- Natural Phenomena
- Politics & Government
- Agence France Presse