Ennis is located in southwest Montana. Ennis is part of Madison County. Ennis has 0.77 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Ennis population is 843, which has grown 0.36% since 2000. The population growth rate is much lower than the state average rate of 11.55% and is much lower than the national average rate of 11.61%. Ennis median household income is $45,288 in 2010-2014 and has grown by 47.35% since 2000. The income growth rate is higher than the state average rate of 41.61% and is much higher than the national average rate of 27.36%. Ennis median house value is $182,700 in 2010-2014 and has grown by 79.47% since 2000. The house value growth rate is lower than the state average rate of 88.54% and is much higher than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Ennis is better than the state average in quality. The Ennis area code is 406.