Accroding to a report by ComScore today, Microsoft expanded its share of the U.S. search market in June, while Google Inc. had a small decline.

ComScore’s June search report concluded that of a total of 11.5 billion searches conducted in the U.S. during the month, 61.5 percent were conducted on Google sites, compared with 61.8 percent in May.

The report showed 20.9 percent of U.S. searches were on Yahoo sites, compared with 20.4 percent in May.

Microsoft sites captured 9.2 percent of U.S. searches, compared with 8.5 percent in April.

Searches through IAC/InterActiveCorp.’s Ask.com declined to 4.3 percent from 4.5 percent.

Searches through Time Warner Inc.’s AOL LLC declined to 4.1 percent of searches from 4.5 percent in May.

The search report is based on the five major search engines, taking into account partner searches and cross-channel searches. It excludes searches for mapping, local directory and user-generated video sites.