West Northfield School District 31 Historical Median Individual Worker Income Data
ACS 2010-2014 data
| West Northfield School District 31 | 45,462 USD |
| Illinois | 32,198 USD |
| U.S. | 30,815 USD |
ACS 2008-2012 data
| West Northfield School District 31 | 42,686 USD |
| Illinois | 31,643 USD |
| U.S. | 30,376 USD |
ACS 2006-2010 data
| West Northfield School District 31 | 43,363 USD |
| Illinois | 31,179 USD |
| U.S. | 29,701 USD |
ACS 2005-2009 data
| West Northfield School District 31 | 44,530 USD |
| Illinois | 30,712 USD |
| U.S. | 29,050 USD |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
