Lamar is located in southwest Missouri. Lamar is between the Barton, Dade county. Lamar has 5.12 square miles of land area and 0.31 square miles of water area. As of 2010-2014, the total Lamar population is 4,499, which has grown 1.67% since 2000. The population growth rate is much lower than the state average rate of 7.74% and is much lower than the national average rate of 11.61%. Lamar median household income is $43,813 in 2010-2014 and has grown by 49.55% since 2000. The income growth rate is much higher than the state average rate of 25.91% and is much higher than the national average rate of 27.36%. Lamar median house value is $85,500 in 2010-2014 and has grown by 39.71% since 2000. The house value growth rate is lower than the state average rate of 52.06% and is 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 Lamar is close to the state average in quality. The Lamar area code is 417.