A curated, dated membership table for the common country groups.
Source
Curated from official membership lists, as of the date above. (This
used to point at the package NEWS for the reference date, where two
different dates were on record – an Rd should not delegate a fact to a
changelog.)
The groups
Twenty-six groups: "EU", "EuroZone", "NATO", "OECD", "G7",
"G20", "BRICS", "ASEAN", "EFTA", "Commonwealth", "OPEC",
"Mercosur", "GCC", "Nordic", "Visegrad", "SCO", "CPTPP",
"RCEP", "EAC", "SADC", "APEC", "ArabLeague", and since 4.0.0 the
African Union ("AU"), "ECOWAS", "CARICOM" (full members) and the
Pacific Islands Forum ("PIF"). Only countries and territories with an ISO
3166-1 code are listed: the G20's European Union and African Union members
are not, and neither is the African Union's Sahrawi Arab Democratic
Republic, which has no code of its own. A suspended member is a member
here; country_groups_history records the suspensions it can date.
As of when
Membership is a snapshot taken on 2026-11-01, carried on the table itself:
attr(country_groups_tbl, "as_of")
#> [1] "2026-11-01"Read the attribute rather than this paragraph if you need the date in code;
it is set from a single constant in data-raw/build_datasets.R, so it
cannot drift from the data the way a hand-written date can. For membership
at any other date use country_groups_history and
country_groups(as_of = ), which is the table this
snapshot is a slice of.