Klein is located close to the center of Montana. Klein is part of Musselshell County. Klein has 12.85 square miles of land area and has no water area. As of 2010-2014, the total Klein population is 336, which has grown 78.72% since 2000. The population growth rate is much higher than the state average rate of 11.55% and is much higher than the national average rate of 11.61%. Klein median household income is $54,595 in 2010-2014 and has grown by 37.20% since 2000. The income growth rate is lower than the state average rate of 41.61% and is higher than the national average rate of 27.36%. Klein median house value is $80,500 in 2010-2014 and has grown by 11.03% since 2000. The house value growth rate is much lower than the state average rate of 88.54% and is much lower 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 Klein is close to the state average in quality.