Broadband penetration has a strong correlation with household income, according to the “Broadband Access and Service in the Home 2007” study by Leichtman Research Group.

53 percent of U.S. households subscribe to a broadband Internet service at home. So far this year, broadband accounts for about 72 percent of all Internet subscriptions at home, compared with 60 percent last year.

The report indicated that broadband penetration remains strongly tied with household income, as 68 percent of households with an annual income over $50,000 have broadband, and only 39 percent of households with annual income under $50,000 get broadband service.

The study also found a positive relationship between household income and Internet subscription. While 92 percent of households with annual incomes above $75,000 subscribe to a Internet service at home, only 45 percent of those with less than a $30,000 annual income do so.