As of October 3rd, 300 of the 4,000 or so iPhone apps were location-aware, according to Skyhook Wireless. 61 percent of these applications were paid.

Skyhook is an excellent position to track these numbers because it is their technology that determines location for the iPhone. A third of these apps use integrated GPS, a third Wi-Fi and a third a hybrid of GPS, cell phone towers and Wi-Fi to determine location.

Top categories include Social Networking, Local Search and Navigation, representing over 50 percent of location-aware app downloads. These are followed by Public Transport and Sports. See pie chart above for a complete list.

[Skyhook via O'Reilly Radar]