The well-appointed workspaces of 500 Corporate Center are in Deerfield, an affluent town straddling Cook and Lake Counties. Deerfield is home to many corporate HQs. These include a drugstore chain, a healthcare company and a pharmaceutical giant. The Deerfield zip code includes more than 1,500 industries and business establishments. Of these, some 340 businesses are in professional, scientific and technical services, the area's biggest sector, followed by around 180 establishments in finance and insurance. Around 80 per cent of workers are employed by companies, nine per cent work for the government and nine per cent are self-employed.