The people are from the communes of Nhuan Trach and Tan Vinh and Luong Son Town in Luong Son District.
The rescue faced difficulties due to the heavy rain and swift-flowing Bui River
Hoa Binh rescue services were informed about the situation in Luong Son District at around 4 pm on Thursday.
Police sent 25 responders to help the residents, people were relocated away from dangerous areas the same evening.
Luong Son has continued to experience torrential rains. Local authorities remain on standby for potential rescue operations.
The northern region of Vietnam has been forecasted to see heavy rain until September 12.