The BBC’s Lyse Doucet in the Iraqi capital says the air strikes followed clashes with IS militants, who have been making gains towards the capital.
Ameriyat al-Falluja, 40km (25 miles) from Baghdad, is a key strategic town.
It comes as a US-led coalition continues to carry out air strikes on IS targets in Syria and Iraq.
The area around Ameriyat al-Falluja is now said to be calm, but there is a standoff along the main road to Fallujah to the north, which is controlled by IS, our correspondent says.
In an US television interview on Sunday President Obama candidly admitted the US had “underestimated” the threat of IS.
He said a political solution – one that would arise out of an accommodation between Sunni and Shia populations – was key to defeating the jihadists.
Meanwhile the Pentagon said US airstrikes overnight targeted other IS positions in Anbar province, 80km from Baghdad.
In Syria US war planes also struck four more oil fields controlled by IS militants on Sunday, near the group’s stronghold in Raqqa.
The Pentagon said the attacks were “successful”, though the UK-based Syrian Observatory for Human Rights (SOHR), which monitors the conflict in Syria, said mostly civilians were hit.
The BBC’s Mark Lowen, near the Turkey-Syria border, says airstrikes in Syria appear focused on cutting off IS’s revenue by targeting oil fields.
The overnight strikes hit the provinces of Aleppo, Raqqa, Hassakeh and Deir al-Zour, hitting a grain silo, or storage container, as well as the country’s biggest gas plant, according to SOHR.
However the strikes in the town of Manbij in Aleppo province appeared to have only killed civilians, not fighters, said Rami Abdulrahman who heads the organisation.
“These were workers at the silos. They provide food for the people,” he said, adding that the number and information was impossible to verify.
Another activist group, the Aleppo Media Center, also reported the strike on the grain silo in Manbij, north-east of Aleppo city. It said the attack ignited a fire at the facility.
BBC.
