The number of people looking for local information on a mobile device grew 51 percent from March 2008 to March 2009, according to comScore.

The mobile browser is the most popular access method for finding local information, with 20.7 million users in March 2009, up 34 percent over a year ago. The strongest growth in the category is coming from downloaded applications, which grew 83 percent compared to a year ago, followed by SMS at 72 percent.