Sumas is a city located in Washington. With a 2020 population of 1,604, it is the 182nd largest city in Washington and the 8461st largest city in the United States. Sumas is currently growing at a rate of 2.23% annually and its population has increased by 22.72% since the most recent census, which recorded a population of 1,307 in 2010. Sumas reached it's highest population of 1,604 in 2021. Spanning over 1 miles, Sumas has a population density of 1,091 people per square mile.
The average household income in Sumas is $65,165 with a poverty rate of 12.30%. The median rental costs in recent years comes to $831 per month, and the median house value is $220,000. The median age in Sumas is 31.1 years, 30.2 years for males, and 33.9 years for females. For every 100 females there are 111.8 males.