Garwin is located close to the center of Iowa. Garwin is between the Tama, Marshall county. Garwin has 1.01 square miles of land area and has no water area. As of 2010-2014, the total Garwin population is 516, which has shrunk 8.67% since 2000. The population growth rate is much lower than the state average rate of 5.19% and is much lower than the national average rate of 11.61%. Garwin median household income is $49,375 in 2010-2014 and has grown by 29.02% since 2000. The income growth rate is lower than the state average rate of 33.56% and is higher than the national average rate of 27.36%. Garwin median house value is $72,300 in 2010-2014 and has grown by 41.49% since 2000. The house value growth rate is lower than the state average rate of 53.09% 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 Garwin is much better than the state average in quality. The Garwin area code is 641.