Zillah is located in Washington. Zillah, Washington has a population of 3,154. Zillah is less family-centric than the surrounding county with 29.11% of the households containing married families with children. The county average for households married with children is 32.13%.
The median household income in Zillah, Washington is $64,201. The median household income for the surrounding county is $58,380 compared to the national median of $69,021. The median age of people living in Zillah is 32.7 years.
The average high temperature in July is 89.4 degrees, with an average low temperature in January of 24.8 degrees. The average rainfall is approximately 8 inches per year, with 16 inches of snow per year.