The Farmers Association Act Article 7

A Farmers’ Association at any level shall have its administrative district as its organizational district, and its name shall be prefixed with the name of that district. As a rule, only one Farmers’ Association may be organized within one such district. However, in accordance with actual need, the central competent authority may order that district Farmers’ Associations within the same special municipality merge with the special municipality Farmers’ Association, or that township/city/district Farmers’ Associations within a county/city merge with the county/city Farmers’ Association, or that several township/city/district Farmers’ Associations merge to form a Farmers’ Association, the name of which shall be decided by the competent authority.The premises of a Farmers’ Association, unless otherwise approved, shall be located in the same place as the corresponding level of government and township /city/district office is located.
中文原文 農會法第7條
各級農會以行政區域為其組織區域,並冠以各該區域之名稱。
同一區域內以組織一個農會為原則。
但依事實需要,中央主管機關得命同一直轄市之區農會或縣(市)之鄉、鎮(市)、區農會合併於直轄市或縣(市)農會,或若干鄉、鎮(市)、區農會合併組織一個農會,其名稱由主管機關定之。
農會會址,除經核准者外,應設於各級政府及鄉、鎮(市)、區公所所在地。

English translation for reference only; the Chinese text prevails. Not legal advice.