Steptoe, WA has a population of 157 and is the 25,461st largest city in the United States. The population density is 71 per sq mi which is 27% lower than the Washington average and 22% lower than the national average. The median age in Steptoe is 51 which is approximately 35% higher than the Washington average of 38. In Steptoe, 58% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 60% of Steptoe residents were born in Washington, 36% were born out of state, 1% were born outside of the United States and 3% were foreign born.