O'neill is located in northeast Nebraska. O'neill has 2.39 square miles of land area and has no water area. As of 2010-2014, the total O'neill population is 3,686, which has shrunk 1.26% 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%. O'neill median household income is $43,796 in 2010-2014 and has grown by 42.13% since 2000. The income growth rate is higher than the state average rate of 33.50% and is much higher than the national average rate of 27.36%. O'neill median house value is $97,800 in 2010-2014 and has grown by 34.53% 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 O'neill is close to the state average in quality.