First of all, it is important to know that the Earth's crust is broken up into large pieces called tectonic plates. Remember, tectonic plates are giant pieces of the Earth's crust that fit together and move around on the Earth's surface.
In 2014, Walla Walla Countyâs population was 59,844, showing 1.8 percent growth from 2010 to 2014, compared to the stateâs growth rate of 5.0 percent. The largest city in Walla Walla County is city of Walla Walla with a population of 32,260 in 2014.
Yakima County, Washington. Yakima County is a county in the U.S. state of Washington. As of the 2010 census, its population was 243,231. The county seat and largest city is Yakima. The county was formed out of Ferguson County on January 21, 1865 and is named for Yakama tribe of Native Americans.