Below is a list of practice communities in Canada, United States and Asia. You can find information on weekly sitting groups, retreats, teacher's schedules, Dharma talks and study opportunities.
** the word Sangha means community
Happy Hearts Sangha
http://mindfulnessedmonton.ca
Calgary Insight Meditation
http://calgaryims.org
Saskatoon Insight Meditation
http://www.saskatooninsight.com/New_Site/Welcome.html
Regina Insight Meditation
http://www.reginainsight.ca
British Columbia Meditation
http://bcims.org
Victoria Insight Meditation Society
http://victoriaims.org
Salt Spring Vipassana
http://www.ssivipassana.ca
Birken Forest Monastery
http://birken.ca
Winnipeg Meditation
http://www.winnipeginsightmeditation.org
Insight Meditation Society
https://www.dharma.org
Barre Centre for Buddhist Studies
https://www.buddhistinquiry.org
Forest Refuge
http://www.dharma.org/meditation-retreats/forest-refuge
Spirit Rock Meditation Centre
http://www.spiritrock.org
Cloud Mountain Retreat Centre
http://www.cloudmountain.org
Vipassana Metta on Maui
http://vipassanametta.org/wp/
Against the Stream (Dharma Punx)
http://www.againstthestream.org
Insight Meditation Centre
http://www.insightmeditationcenter.org
Shwe Oo Min
http://ashintejaniya.org
U Pandita
http://www.saddhamma.org/html/retreat.shtml
Pa Auk Forest Monastery
http://www.paaukforestmonastery.org