According to US Census Bureau American Community Survey 2009 –
The City of Pleasanton has a total foreign born population of 13,665 (20.6%), out of which 2,862 are from India.

• i.e – 4.31% of population of Pleasanton is of Indian origin. Indians are the top Immigrant group in Pleasanton.

The City of Dublin has a total foreign born population of 9,220 (21.7%), out of which 896 are from India

• i.e – 2.10% of population of Dublin is of Indian origin. Indians are the 5th largest immigrant group in the city.

The City of San Ramon has a total foreign born population of 13,032 (26.6%), out of which 2,621 are from India

• i.e. – 5.35% of population of San Ramon is of Indian origin. Indians are just behind Chinese as the top immigrant group.

By comparison, about 16% of population of Fremont is of Asian Indian origin.
These numbers may look on the lower side, but well this is the statistic as of now. More current and detailed numbers are expected to be released by end of this year.