They have learned that ADHD runs in families. They found that over 25% of the first-degree relatives of the families of ADHD children also had ADHD, whereas this rate was only about 5% in each of the control groups. Therefore, if a child has ADHD there is a five-fold increase in the risk to other family members.
Cities, Towns and Communities. Moscow, with a population of 22,000, is the county seat and also the largest city in the county. The population of Moscow fluctuates as the University of Idaho population increases and decreases with the change of semesters and summer break. The other incorporated cities in Latah County include Genesee, Juliaetta, Kendrick, Troy, Deary, Bovill, Potlatch and Onaway.
Moscow's population of about 12.19 million makes it the 6th largest city in the world and the most populous city in Russia. Moscow has a density of 8,537.2 people per square kilometer.