Compared to the other cities in Massachusetts and cities in all other U.S. states, how safe is Marlborough, MA? From the gauges displayed above, you will notice that Marlborough, MA has been ranked safer than 31% of other cities in the state of Massachusetts. In addition, Marlborough, MA is safer than 39% of cities in the entire United States. To achieve these results, all Massachusetts and United States cities were analyzed to determine how many locations had a lower crime rate than Marlborough, MA. By studying this data, it was possible to determine that Marlborough, MA is below average in safety when compared with other United States cities.