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.
Walla Walla County profile. Walla Walla County was formed in 1854 and was named after the Walla Walla tribe of Native Americans. Walla Walla covers 1,271 square miles of land, ranking 26th in size among Washingtonâs 39 counties. Located in southeastern Washington, it is bordered by Columbia to the east, Franklin to the northwest, Benton on the west and Umatilla County, Oregon on the south.