- Number of congregations in a city/region
- How large of a geographical region a stake/district covers
- Number of baptisms and activity levels (if available)
- The maturity of the Church in the city/region (i.e. how long has the Church been established)
I'll start with South America and the Caribbean and add other parts of the world in future posts. Cities with stakes likely to split are in regular font; districts likely to become stakes are in italics. Number of current branches in districts are provided to the best of my knowledge.
BRAZIL - Campinas Temple District
- Belo Horizonte
- Campo Grande
- Juiz de Fora
- Niteroi
- Rio Branco
- Sao Jose do Rio Preto
BRAZIL - Curitiba Temple District
- Curitiba
- Joinville
BRAZIL - Porto Alegre Temple District
- Canoas ~10 wards
BRAZIL - Recife Temple District
- Belem
- Fortaleza
- Recife
BRAZIL - Sao Paulo Temple District
- Sao Paulo
PERU
- Chiclayo
- Chimbote
- Lima
- Trujillo
- Casa Grande - 6
- Chincha - 6
- Guadalupe La Libertad - 5
- Tarma - 10
ECUADOR
- Loja - 6
- Riobamba - 5
COLOMBIA
- Bogata
- Cartagena
- Armenia - 7
- Duitama - 6
- Ibague - 5
- Manizales - 7
- Popayan - 5
- Santa Marta - 5
BOLIVIA
- La Paz
- Santa Cruz
- Guayaramerin - 6
- Riberalta - 6
- Tupiza - 6
PARAGUAY
- Coronel Oviedo - 7
- Encarnacion - 7
VENEZUELA
- Guayana
- Puerto La Cruz
- Falcon - 5
- La Pascua - 6
- Valera - 8
URUGUAY
- Trienta y Tres - 6
GUYANA
- Georgetown - 7
- New Amsterdam - 6
SURINAME
- Paramaribo - 6
TRINIDAD AND TOBAGO
- Port of Spain - 11
JAMAICA
- Kingston - 5
DOMINICAN REPUBLIC
- San Cristobal
- Santo Domingo
- Azua - 6
- Barahona - 7
- San Juan - 6
- San Pedro - 11
If anyone has information concerning districts close to stakehood or stakes close to splitting, feel free to leave a comment.