[+ Vault 31 +] #33702077

members (measured 1 Sept 2026, 22:11 UTC)

12 January 2024

created (per Roblox API)

10 August 2026

first measured by this register

Membership history

Growth

Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
19 Aug 2026, 16:01	12	first reading

Ownership

Owned by user #88589277 as measured.

Experiences

players in this group’s experiences right now

lifetime visits across 1 experiences

Nuka World! (WIP)0 playing now

11 visits

Experiences this group owns, by lifetime visits. Live-player counts are from our last measurement.

Members we’ve seen

Boston (@BostonFighter) — Head of Security (rank 254)

Q_Dingle (@SCP_682AB) — Vault Dweller (rank 5)

Kat (@Katnzp) — Vault Dweller (rank 5)

A sample — only members this register has independently measured, highest rank first. Not the full roster.

Rank structure

The Overseer1

Vault-Tec Board0

Head of Medical0

Head of Security1

Head of Maintenance0

The Assistant Overseer1

Vault 31 Security1

Vault Dweller8

Vault 31 Maintenance Vault Dwellers0

Vault 31 Medical Division0

Member12

Guest0

Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).

Related groups

Groups whose measured members overlap with this one — a sample from our membership graph.

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8,614,352

USSF - United States Special Forces#22025 · 2 shared members

3,409,908

Hapless Studios#5502618 · 2 shared members

839,842

SCP Futuristic Group#3185747 · 2 shared members

29,514

Vault 52#8652530 · 2 shared members

22,524

=Vault 47=#14684960 · 2 shared members

1,021

LSPLASH#3049798 · 1 shared members

23,821,657

Chillz Studios#2782840 · 1 shared members

18,434,469

Sonar Studios#2919215 · 1 shared members

18,245,524

Bee Swarm Simulator Club#3982592 · 1 shared members

18,211,705

Uplift Games#295182 · 1 shared members

14,680,100

Roblox#7 · 1 shared members

13,453,039

Open data

Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)

Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.