You are correct, Community Colleges usually have the lowest tuition fees for international students unless you manage to secure a big scholarship at a university, and that is unlikely at undergraduate level.
Here are som recommended Community Colleges for Computer Science studies in the San Francisco Bay Area:
Berkeley City College
Foothill + De Anza Colleges
Laney College
The Colleges of Contra Costa
Fill out our information request form if you want help to choose and apply to colleges in the US or other countries.