The average household size was 2.56 and the average family size was 3.26. In the county, the population was spread out with 25.60% under the age of 18, 10.90% from 18 to 24, 30.00% from 25 to 44, 21.40% from 45 to 64, and 12.20% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 94.20 males. For every 100 females age 18 and over, there were 90.80 males. The median income for a household in the county was $42,916, and the median income for a family was $54,721. The per capita income for the county was $25,723. About 11.70% of families and 15.30% of the population were below the poverty line, including 21.70% of those under age 18 and 8.60% of those age 65 or over. Since the second half of the 20th century, Oklahoma County has been somewhat conservative for an urban county. It swung from a 20-point victory for Harry Truman in 1948 to a 15-point victory for Dwight Eisenhower in 1952. It has gone Republican in all but one presidential election since then; it narrowly voted for Lyndon Johnson in 1964. This mirrors the growing Republican trend in Oklahoma since the end of World War II. However, the Republican share of votes for President has decreased in every election since the 2004 election. In the 2018 Oklahoma gubernatorial election, Oklahoma County gave Democratic candidate Drew Edmondson the largest vote share of any county, with 54.2% of the vote, whereas Republican Mary Fallin won the county with 51.3% of the vote four years prior. Also, in the 2018 United States House of Representatives elections in Oklahoma, Democrat Kendra Horn received 52.3% of the vote in Oklahoma County, which was the only county in the state to vote for a Democratic House candidate.