Does a simpler representation of this if condition exist?

I used the below conditional statement to ensure that the city name given is of valid length. Length of city should be greater than or equal to 3 and less than or equal to 20.

if(city.length()<3 || city.length()>20) return false;
else return true;

I am told that this conditional statement can be further simplified. Is that right? Then what is the simplified code?