Compared to the other cities in Wisconsin and cities in all other U.S. states, how safe is Delafield, WI? From the gauges displayed above, you will notice that Delafield, WI has been ranked safer than 56% of other cities in the state of Wisconsin. In addition, Delafield, WI is safer than 74% of cities in the entire United States. To achieve these results, all Wisconsin and United States cities were analyzed to determine how many locations had a lower crime rate than Delafield, WI. By studying this data, it was possible to determine that Delafield, WI is above average in safety when compared with other United States cities.