If it's the latter, read on to learn which four Illinois cities rated among the 25 safest places to live in the United States, according to a new study. Based on the city's murder and property crime rates per 100,000 people, determined by FBI crime reports, these are the safest places to live in the United States among the 859 cities analyzed in this year's rankings. According to the US News & World Report study, the safest place to live in the entire nation is Johns Creek, Georgia, a city of around 80,000 people. Next, it's Naperville at number-nineteen:About 148,437 people live in Naperville, and the median age here is 39.8. Lastly, tied with Naperville at #19, it's Palatine:About 64,712 people live in Palatine, and the median age here is 40.2.