The average household size was 2.46 and the average family size was 2.86. In the city, the population was spread out with 22.1% under the age of 18, 8.0% from 18 to 24, 27.2% from 25 to 44, 26.8% from 45 to 64, and 15.9% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 90.3 males. For every 100 females age 18 and over, there were 92.0 males. The median income for a household in the city was $35,000, and the median income for a family was $41,250. Males had a median income of $28,750 versus $19,500 for females. The per capita income for the city was $15,508. About 9.1% of families and 10.2% of the population were below the poverty line, including 15.6% of those under the age of eighteen and 4.8% of those sixty five or over. Located primarily to the west of Greeley, a 41 Megawatt (MW) windfarm was constructed in 2011. The Elk windfarm is owned by RPM Access and consists of 17 Nordex 2.5 MW turbines mounted on tall towers. Central Iowa Power Cooperative is purchasing the power generated by the project under a 20-year power purchase agreement and is distributing the power to its member Cooperatives.