The table above illustrates an overview of the annual crime reported in Portsmouth, NH. These figures on reported criminal activity in Portsmouth, NH, based on a reported crime per 100,000 citizens, is shown in order to compare these rates across disparate categories. You will notice that the crimes collected here, for comparison purposes, have been separated between violent crimes and those involving or threatening property. According to the annual crime data, the crime rate in Portsmouth, NH is 1% higher than the average of the whole of the state of New Hampshire, and when compared with the national average, is 42% lower than. When looking at violent crimes, Portsmouth, NH has 2% higher than violent crime rate than New Hampshire average, while remaining 47% lower than the national average. In property crime, Portsmouth, NH is equal to the average of New Hampshire and is 41% lower than the national average.