The Internet has revolutionized the social and economic environment in which people live by providing an alternative or supplemental channel for communication, gathering and disseminating information, entertainment, commerce, and education. Household use of high-speed, or broadband, Internet services has risen dramatically during this decade which demonstrates the key role the Internet plays in the everyday lives of many individuals. Nonetheless, not everyone either uses the Internet or has access to it. This report, prepared jointly by the Commerce Department's Economics and Statistics Administration (ESA) "and" National Telecommunications and Information Administration (NTIA), seeks to explain differences in broadband Internet use among households. This report builds on the findings of the NTIA report published earlier in 2010 in order to more fully explore the differences in broadband Internet use among households with different characteristics. In addition, this report analyzes the main reasons provided by households for non-adoption, characteristics associated with a lag in technology adoption, and long-term growth in home broadband Internet use across population subgroups and geographic locations. The next section describes the data and methodology employed in this study. Section 3 looks at the pattern of household Internet use in 2007 and 2009. Section 4 shows how demographic characteristics and geographic location of households are associated with home broadband Internet adoption. Section 5 analyzes the main reasons provided by households for non-adoption. Section 6 analyzes who lags in technology adoption by comparing users of dial-up Internet services with users of broadband Internet services. Section 7 looks at broadband Internet adoption by people with disabilities. Finally, Section 8 studies long-term changes in home broadband and Internet use by comparing the most recent data from 2009 with that from 2001, and Section 9 provides some concluding marks. An appendix is included. (Contains 37 tables, 12 footnotes, and 9 figures.) [This paper was prepared by the Commerce Department's Economics and Statistics Administration.]