Аccording to the numbers provided by the 2020 Bulgarian census, Bayachevo has a population of 916 people with a permanent address registered in the settlement.

The village has an average elevation of 193 meters above sea level.

Bayachevo's name stems from a story dating back to the 16th century.

Bayach comes from the word "Baene" which in the Bulgarian language means curing diseases or curses.

According to the legend, there used to be a person in the village who occupied such a position.