USA.com / Illinois / Lee County / Lee Center, IL / 61331 / Housing / Historical Year Structure Built of Houses Data
61331 Zip Code Historical Year Structure Built of Houses Data
ACS 2010-2014 data, see rank
| 61331 Zip Code | Illinois | U.S. |
| 0 | 1967 | 1976 |
US Census 2000 data, see rank
| 61331 Zip Code | Illinois | U.S. |
| 1939 | 1962 | 1971 |
* 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.