Subiaco is a city located in the U.S. state of Arkansas. It is within Logan County which named after Subiaco in the Lazio region of Italy. It has a total area of 1.85 square miles at 35°17′38″N 93°38′17″W. The elevation is 476 feet above sea level. As of the 2010 census data, it had a total population of 572. The population density was 306.31/sq mi. Recent job growth is positively increased by 2.47 percent. The average travel time is 13 minutes. It has Zip code 72865.