Geneva is a city located in Kane County Illinois. It is also the county seat of Kane County. With a 2020 population of 21,629, it is the 112th largest city in Illinois and the 1738th largest city in the United States . Geneva is currently declining at a rate of -0.41% annually but its population has increased by 0.62% since the most recent census, which recorded a population of 21,495 in 2010. Geneva reached it's highest population of in . Spanning over 10 miles, Geneva has a population density of 2,179 people per square mile.
The average household income in Geneva is $144,308 with a poverty rate of 3.93%. The median rental costs in recent years comes to $1,510 per month, and the median house value is $338,300. The median age in Geneva is 43.2 years, 43.3 years for males, and 43.1 years for females.