On the other hand, the model failed to find statistically significant evidence of an association between broadband adoption and two traditional demographic indicators of interest. Neither the share of population 65 and older nor the Hispanic share of total population registered a significant effect. In no way do these results contradict the demographic splits found in the ACS and previous surveys. Instead, they suggest top-line findings of earlier surveys may reflect a combination of other underlying factors. Older individuals tend to have lower broadband adoption, for instance, but these modeled results suggest that could be due to lower incomes or less education.11 Yet not all traditional demographic splits were insignificant: The share of black population had a significant and small negative effect on broadband adoption. Overall, these results invite deeper investigation of demographic factors at a more local level.
The model also helps clarify the extent to which local broadband quality, development patterns, and industries can affect adoption rates. While media narratives often suggest deployment of higher-speed networks will boost local subscribership—and current data does show a wide range in average speed across the country—the model finds that faster download speeds are not yet associated with higher subscription rates.12 Instead, the share of a metro’s population living in urban areas is positively associated with adoption rates. This association may speak to a combination of different factors, including greater infrastructure deployment in denser areas, lower costs of service relative to rural areas, and potential network effects from neighbors using computers and the Internet.13 In addition, with broadband connectivity of growing importance to many service-related industries, the share of workers in technology-, management-, and education-focused occupations registered a moderately significant (at the 5 percent level) effect.14 The relative importance of industry was sensitive to model specification, though, suggesting the need for further research into the relationship between occupations and broadband.15 Still, the kinds of jobs people hold and where they live are important indicators of projected subscribership at the metro level.
Collectively, the model points to many different factors influencing broadband adoption rates in metro areas in 2014. Markets boasting higher levels of income, educational attainment, and urban density with many tech workers—like Seattle or university towns like Iowa City—tend to have the greatest rates of broadband adoption. On the other hand, markets with lower levels of income, educational attainment, and density with fewer tech workers tend to lag behind in adoption, including places like Memphis and Laredo, Tex. In turn, viewing broadband adoption at a metro scale is often tightly linked to several variables, many of which will need to be examined in greater depth and over longer timeframes to gauge their relative importance.
From 2013 to 2014, the share of households with a broadband Internet subscription rose by 1.7 percentage points nationally, including a statistically significant increase among 58 of the country’s 100 largest metropolitan areas.
Over the two years the American Community Survey has collected data on broadband adoption, approximately 2.6 million more households gained a broadband Internet subscription in 2014 compared to 2013, driving up the national share from 73.4 percent to 75.1 percent. At the same time, the share of households without a computer dropped from 16.2 percent to 14.9 percent. Collectively, these year-to-year changes point to a growing a reliance on high-speed Internet access—and digital hardware in general—that has resulted in an increased demand for broadband, in line with previous studies.16
However, broadband adoption rates have continued to differ markedly among certain households and individuals, confirming two indicators of significance from the previous finding: income and educational attainment. For instance, while households with annual incomes under $50,000 tended to see their adoption rates increase the most from 2013 (1.8 percentage points), their overall shares remained considerably below households earning more than $50,000 (59.3 percent compared to 88.8 percent). Individuals with less than a high school diploma made similarly high gains—jumping from 51.7 percent to 54.1 percent, or 2.4 percentage points— but they still lagged far behind individuals with a high school diploma or higher (81.6 percent). Although it’s promising to see lower-income and less-educated groups increase their subscribership, these growth rates will need to accelerate even more to achieve adoption across the entire population.

The country’s 100 largest metropolitan areas followed many of these national trends, with most markets seeing a statistically significant increase in broadband adoption. Almost 1.8 million more households in these metro areas had a broadband Internet subscription in 2014 versus 2013, accounting for 68 percent of the entire U.S. gain. While widespread, the largest increases overall were concentrated in the most populated metro areas, including 426,000 more households with a broadband subscription in New York, Los Angeles, Houston, Seattle, and Chicago.