All of the oldest congregations in the new world were founded by Sephardi Jews and followed the Sephardic liturgy.
Until 1795, all documented congregations in the United States followed the Sephardic minhag.
This list includes only buildings originally built as synagogues that are still standing.
Some continue in use as Jewish houses of worship; others have been adaptively reused.
Fewer than 100 purpose-built synagogues constructed prior to 1900 remain standing.