The East Idaho Credit Union at 418 W. Fir St. in Shelley was robbed around 4 p.m. Tuesday.
The suspect is one male subject. At the time of the robbery, he was wearing a black hat, red hoodie and sunglasses. He appeared to in his late teens, early 20s.
There were no weapons, Bingham County Sheriff Dave Johnson said.
Shortly after the credit union was robbed, a stolen vehicle was reported.
"We assume the two incidents are tied together," the sheriff said.
Police later reported that they had recovered the stolen vehicle in another part of the community.
Sheriff's deputies are still looking for the suspect.