Knobel is a city located in the U.S. state of Arkansas. It is within Clay County. It has a total land area of 0.43 square miles at 36°19′10″N 90°36′6″W. The elevation is 279 feet above sea level. As of the 2010 census data, it had a total population of 287. The population density was 617.17/sq mi. Estimated per capita income in 2015 was $16,385. The average travel time is 41 minutes. It is using Zip code 72435.