They all have 4 weeks, but February is the only one to have exactly 4 weeks (except in Leap years when it has 4 weeks and 1 day). April, June September and November each have 30 days = 4 weeks and 2 days. The rest of the months each have 31 days = 4 weeks and 3 days.
Prospect Heights, IL Other Information. 1  Located in COOK County, Illinois. 2  Prospect Heights, IL is also known as: 3  PROSPECT HTS, IL.
100. 1  Here we can see a simple outline of the cost of living in Prospect Heights, IL. As you can see, with the average cost of living in Prospect Heights, IL being 115, that puts it 16% higher than the average of Illinois and 15% higher than our nation's average.