BoS - around 500 to 600 members with 48 veritbirds and decreasing by the day.
Institute - 700 -1,000 synths and increasing by the day.
Raiders - 10,000 to 15,000 and asing bincrey the day.
Super Mutants - 9,000 - 13,000 and increasing by the day.
Feral Ghouls - 7,000 - 12,000 and decreasing by the day.
Gunners - around 5,000 mercs and decreasing by the day.
Mirelurks - around 10,000 and increasing by the day.
Goodneighbor - 500 citizens and 100 guards and decreasing by the day.
Diamond City - 1,000 citizens and 150 guards and decreasing by the day.
Railroad - around 500 and decreasing by the day.
Deathclaw - around half

Where did you get these numbers?

Seems legit......