There are 13 divisions, which is the highest level of organization under the general conference. Below that are the union conferences and union missions (which are the same thing, except that they are not self-sustaining). According to Adventist.org, on the union conference level, there are:
Union Conferences............................................................................................................................ 51
Union Missions................................................................................................................................... 55
At the end of 2010: 70,188 official churches and 65,157 companies.
Many!
1
Yes
The average number of elders in the individual Seventh-Day Adventist churches is 7.
386 according to adventist.ca as of February 3rd, 2017
Yes
Yes. There are 297 churches in the Cuban Union Conference.
Yes. There are 297 churches in the Cuban Union Conference.
While it is possible that individual Adventist churches dedicate their choir's robes, this is not an official practice of the Adventist Church.
Something over 51. There are 51 in the Sonora Mexican Conference, but there is a portion of northern Sonora that is part of the Baja California Conference. That conference has 85 churches, some of which are in Sonora.
Yes, there is a Seventh-day Adventist Church in Bahrain and you can find its website at the link below.
In NY city there are 3 7th Day Adventist Churches, at 232 W 11th St, 161 W 93rd St and 562 W 150th St In NY State there are a further 162 Churches and companies.