average household size was 2.33 and the average family size was 2.95. In the city, the population was spread out, with 21.5% under the age of 18, 9.5% from 18 to 24, 37.9% from 25 to 44, 21.9% from 45 to 64, and 9.3% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 100.4 males. For every 100 females age 18 and over, there were 99.5 males. The median income for a household in the city was $66,735, and the median income for a family was $78,430. Males had a median income of $58,112 versus $37,200 for females. The per capita income for the city was $36,233. About 3.3% of families and 5.3% of the population were below the poverty line, including 6.3% of those under age 18 and 6.5% of those age 65 or over. Economy Several companies in the high-tech industry are based in Redmond. The largest employer in the city by far is Microsoft, which moved its headquarters to Redmond in 1986. Microsoft has over 40,000 blue badge FTEs (full-time employee), 45,000 orange badge contractors (as of June 2012, there are over 94,000 workers, and over half are contractors), and more than 8 million square feet (750,000 square meters) of office space in the Seattle area Eastside region, primarily in Redmond, with additional offices in Bellevue and Issaquah (90,000 employees worldwide). In June 2006, Microsoft purchased former Safeco's Redmond campus at 4515–5069 154th Place NE for $220.5 million. Other companies with headquarters in Redmond include Nintendo of America, Genie Industries (now part of Terex), Physio-Control (now part of Stryker), Visible.net, WildTangent, Solstice (acquired by Samsung) and Data I/O. In 2015, SpaceX and Hyperloop Genesis announced opening of a facility in Redmond. Their focus will be R&D and manufacturing for a proposed internet communications satellite constellation and new transport systems. Unlike Bellevue and other neighboring cities, the city of Redmond does not have a business and occupation tax on income. However, to help offset the costs of road improvements for businesses, a business license fee of $55 per employee was approved in 1996. , the fee is $107 per employee. Top employers According to Redmond's Comprehensive Annual Financial Reports, the top employers in the city are: Culture Redmond Derby Days is an annual community festival held the second full weekend of July and celebrated its 75th anniversary