You can find your local Church of Jesus Christ of Latter Day Saints by visiting LDS.org and clicking on Locations and Schedules. This brings you to a webpage where you may find nearby Mormon meetinghouses, temples, institutes, wards and branches.
"Meetinghouse" is the word used to describe the building where a Mormon congregation meets on Sundays. There is generally one meetinghouse for followers in a geographical area, but some areas may have more churches to split their congregation into groups. Congregations are referred to as either "wards" or "branches" depending on their size; wards are significantly larger congregations than branches.