POLICE are tonight talking to a 55-year-old woman and two census collectors who were tied up by armed robbers during a home invasion at Boonah, southwest of Brisbane.

Detective Inspector Michael Niland said about 11.15am, the woman was on another part of the property when she saw a car enter her driveway and she returned to the house.

Det Insp Niland said the woman was confronted by the robbers, one of whom was armed with a firearm, who then took her to her bedroom and tied her up with rope.

Later, two census collectors, a man and a woman, entered the property and were also confronted.

Det Insp Niland said the trio did not have to wait too long for rescue.

"The (woman's husband) came home shortly after midday and saw the offenders leaving and he was able to rescue the three victims," he said.

He said the robbers escaped with two mobile phones and car keys, which may have taken so the offenders could not be followed.

He said the witnesses were currently with police and that a description of the robbers had not been released.

"They were wearing high-visibility shirts and (the) initial description is that they were clean-cut, they had short hair and were clean-shaven," he said.

"They were unmasked and ungloved."

He said all three victims were still shaken up.

"(The victims) are physically unharmed, however, it's understandable that they are quite shaken up."

There is no apparent connection between the homeowners and the offenders.