Elgin is a city located in Illinois. With a 2020 population of 111,401, it is the 7th largest city in Illinois and the 276th largest city in the United States. Elgin is currently declining at a rate of -0.13% annually but its population has increased by 2.97% since the most recent census, which recorded a population of 108,188 in 2010. Elgin reached it's highest population of 112,322 in 2016. Spanning over 38 miles, Elgin has a population density of 2,971 people per square mile.
The average household income in Elgin is $83,912 with a poverty rate of 11.69%. The median rental costs in recent years comes to $1,065 per month, and the median house value is $177,500. The median age in Elgin is 34.6 years, 33.7 years for males, and 35.5 years for females. For every 100 females there are 99.4 males.