The officer said she saw the fire around 3:30 p.m. Friday while on a routine patrol. He quickly ran to get everyone out, including a young child.
By the time fire officials arrived on scene everyone was out safely.
The Wheeling Fire Chief praised the officer, saying she helped prevent what could have been a deadly house fire.
Fire officials say the trailer home was engulfed and spread to two other nearby homes, but luckily no one was hurt.
Officials say the cause of the fire is under investigation.