På toppen av befolkningen hade Alexandria något över 53 invånare, enligt listan på officiella wikia sida. Men med min matte finns det en återstående (spoiler)
33 (give or take) residents after the events we have witnessed this season such as the attack by the Wolves and the break in by the walkers.
...
Therefore, before the attack by the Wolves, the number should be around 51, seeing as though 2 residents (Pete and Reg) were killed before the Wolves and "The Herd" attack didn't occur until later in the season.
Osäkerheten kommer från "Många andra invånare" punkt på Wikia-sidan.