Portland is a city located in the U.S. state of Arkansas. It is within Ashley County on north-south U.S. Route 165 at the intersection with State Highway 160. It has a total area of 1.08 square miles at 33°14′12″N 91°30′42″W. The elevation is 125 feet above sea level. As of the 2010 census data, it had a total population of 430. The population density was 376.39/sq mi. Estimated per capita income in 2015 was $24,757. Recent job growth is negatively decreased by 0.66 percent. The average travel time is 24 minutes. It has Zip code 71663.