Gridley is located close to the center of Illinois. Gridley is between the Mclean, Livingston, Woodford county. Gridley has 1.23 square miles of land area and has no water area. As of 2010-2014, the total Gridley population is 1,377, which has shrunk 2.41% since 2000. The population growth rate is much lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. Gridley median household income is $64,286 in 2010-2014 and has grown by 38.37% since 2000. The income growth rate is much higher than the state average rate of 22.70% and is higher than the national average rate of 27.36%. Gridley median house value is $114,400 in 2010-2014 and has grown by 30.89% since 2000. The house value growth rate is lower than the state average rate of 34.33% 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 Gridley is better than the state average in quality. The Gridley area code is 309.