Membobin Cocin ’Yan’uwa a Amurka da Puerto Rico sun fi 91,000, bisa ga rahoton ƙididdiga na baya-bayan nan a cikin Littafin Shekarar 2021 na Cocin ’Yan’uwa daga Brotheran Jarida. Littafin Shekarar 2021-wanda aka buga a ƙarshen faɗuwar ƙarshe-ya haɗa da rahoton ƙididdiga na 2020 da kuma kundin adireshi na 2021 don ɗarika.
Memban Cocin ’Yan’uwa a Amurka da Puerto Rico ya faɗi ƙasa da 100,000, bisa ga littafin 2020 Church of the Brethren Yearbook daga Brothers Press. Don 2019, Littafin Yearbook ya ba da rahoton membobin 98,680 a gundumomi 24 da kuma al'ummomin masu bauta na gida 978 a duk faɗin cocin 'yan'uwa - asarar 5,766 sama da shekarar da ta gabata.
