A Spatial Taxonomy of Broadband Regions in the United States. Tony H. Grubesic Department of Geography. Introduction. An interesting aspect of the Internet “bandwidth boom” in the United States during the late 1990s was the uneven nature of its spatial distribution .
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Tony H. Grubesic
Department of Geography
One DSL enabled switch in Allen County
Entire county is served by cable broadband via Time Warner Cable (near monopoly)
Sequelle Communications Alliance
are deviations from the mean
95% confidence interval (p = 0.05)Local Indicators of Spatial Association
High-High (Broadband Core): Where zip codes displaying high levels of broadband availability and competition are surrounded by other zip codes with similar values. These regions correspond to the greatest levels of broadband availability and competition in the United States and are primarily located in urban areas.
Low-Low (Broadband Periphery): Where zip codes displaying low levels of broadband availability and competition are surrounded by other zip codes with similar values. These regions are largely devoid of broadband options and are primarily located in the most rural and remote areas of the United States
Low-High (Islands of Inequity): Where zip codes displaying low levels of broadband availability and competition are surrounded by zip codes displaying relatively high values. These locations are typically found adjacent to, or inside of, the Broadband Core zones;
High-Low (Islands of Availability): Where zip codes displaying high levels of broadband availability and competition are surrounded by zip codes displaying relatively low levels. These locations are scattered throughout the U.S., with many of them found on the outskirts of MSAs or CMSAs
Broadband Core is clearly centered on the major metropolitan regions in the United States – with the overwhelming majority of zip codes in Census defined metropolitan areas
Not only does the BC encompass the vast majority of the Atlanta metropolitan area, there is spillover into smaller adjacent metropolitan and micropolitan areas
There is no spillover and all of the BC is contained with the Oklahoma City metropolitan area
A more complete picture of market structure will be deduced, deepening our understanding of what helps motivate both the rollout of broadband services at the local level and the degree to which market characteristics fuel broadband competition.