Apparently the United States has one of the slowest Internet access rates of the developing nations. The US median is about 2 megabits per second (mbps) compared with 61 mbps for Japan, South Korea at 45 mbps, France 17 mbps and even Canada at 7 mbps.
In the US the median speed ranges from a slow 0.54 mbps in Alaska to a speedy 5 mbps in Rhode Island. A histogram generated from the data shows that most states fall from 1 to 2.5 mbps. Delaware comes in at #9 with around almost 2.7 mbps. But that is still low compared to the rest of the world.
Combining the speed data with population density data (population and area) reveals a weak correlation, but what you would expect, higher population density states states have higher median broadband speeds. This is probably a reflection of higher population density states having cities or better infrastructure, though there are still outliers like Kansas, with a high speed for a low population density state and Rhode Island which is an outlier for speed. I did try to work on finding measurements of state infrastructure such as roads (using median distance to road information from this article), but I failed to find any better correlation.
The data (.pdf report) is from Speed tests results for Sept. 2006 through May 2007; most participants had DSL or cable modem connections Source: CWA Communications. I think that the CWA, Communication Workers of America, is trying to make the point for better higher speed Internet access which gets them more jobs.
(go take the test yourself)