Arnold is located close to the center of Nebraska. Arnold is between the Custer, Lincoln county. Arnold has 0.67 square miles of land area and has no water area. As of 2010-2014, the total Arnold population is 550, which has shrunk 12.70% since 2000. The population growth rate is much lower than the state average rate of 8.44% and is much lower than the national average rate of 11.61%. Arnold median household income is $42,188 in 2010-2014 and has grown by 65.44% since 2000. The income growth rate is much higher than the state average rate of 33.50% and is much higher than the national average rate of 27.36%. Arnold median house value is $52,700 in 2010-2014 and has grown by 39.79% since 2000. The house value growth rate is lower than the state average rate of 47.84% 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 Arnold is better than the state average in quality. The Arnold area code is 308.