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Washington Union High School District Historical Year Structure Built of Houses Data
ACS 2006-2010 data, see rank
| Washington Union High School District | California | U.S. |
| 1966 | 1973 | 1975 |
ACS 2005-2009 data, see rank
| Washington Union High School District | California | U.S. |
| 1968 | 1973 | 1974 |
* 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.