When deciding where to move to, you will need to know what the population of glenoma Washington is. This Washington city is located in Lewis County and has an approximate population density of eleven people per square mile. The 98336 zip code is a Lower Middle Class zip code, with an unemployment rate that is higher than the state average of 3.6%, but lower than the national average of 3.6%. The median age in this area is 35.2 years, and the percentage of people with a college degree is below the state average.