Compared to the other cities in Kansas and cities in all other U.S. states, how safe is Ottawa, KS? From the gauges displayed above, you will notice that Ottawa, KS has been ranked safer than 20% of other cities in the state of Kansas. In addition, Ottawa, KS is safer than 28% of cities in the entire United States. To achieve these results, all Kansas and United States cities were analyzed to determine how many locations had a lower crime rate than Ottawa, KS. By studying this data, it was possible to determine that Ottawa, KS is below average in safety when compared with other United States cities.