Average measured connection speed (All graphics courtesy: Akamai)

America is marching backwards with a gradual decline in broadband speeds, according to a new report issued today.

Akamai’s State of the Internet Report for the final quarter of 2009 (report only available with permission from Akamai) rates America 22nd fastest in broadband connections, averaging 3.8Mbps, and declining.  Speeds dropped 0.9 percent for the quarter, 2.5 percent for the year.

Still on top are South Korea, Hong Kong, and Japan, now joined by former Soviet bloc countries Romania, Latvia, and the Czech Republic — all rapidly improving broadband speeds by double digit percentages.

Within the United States, among the top 10 individual states — five rated increased speeds and five measured lower speeds.  Some attribute this to network congestion, others suspect some customers have downgraded service in a poor economy.  But the biggest reason for the speed drop comes from wireless broadband.  Some Americans are increasingly relying on broadband service delivered to smartphones or other wireless devices over slower speed networks.

Overall, 31 states saw average connection speeds increase in the fourth quarter – up from 25 in the prior quarter. Notable gains included South Dakota’s 18 percent jump to 4.5 Mbps. Fourth quarter decreases in average connection speeds were seen in 19 states and the District of Columbia, and included Virginia’s 13 percent drop to 4.0 Mbps. Akamai believes that the significant decline in Virginia was likely due, in part, to increased traffic seen from lower-speed mobile connections that entered the Internet through gateways within those states.

Increased speeds year over year were seen in 29 states, with Hawaii growing 33 percent to 4.7 Mbps.

South Korea’s introduction to the iPhone drove their average speeds down by a whopping 24 percent.  KT (formerly Korea Telecom) is at fault here — the national wireless carrier has slow wireless Internet speeds.

Stop the Cap! readers  in Rochester and Austin should notice both cities made the top ten fastest list, measured by Akamai.

[Thanks to Stop the Cap! reader Rob who sent us details.]

Fastest American Broadband Cities by Unique IP

Fastest Broadband States

Best Average Measured Connection Speeds (not suprisingly most are college towns)

Top 10 States