Olathe is located in Johnson County, KS. The population is 130,031, making Olathe the 2nd largest city in Johnson County and the 4th largest city in the state of Kansas.
There are 52 public schools in Olathe with an average Homefacts rating of B+. The total crime rate for Olathe is low , and there are 336 registered sex offenders residing in the city. Unemployment in Olathe is low and the median home sales price is $0. Detailed and up-to-date Olathe property reports are available for any property address.