COUNTRY & TERRITORY REFERENCE

Republic of the Congo country codes

République du CongoAfrica

Flag shown for Republic of the Congo
ISO alpha-2
CG
2 letters
ISO alpha-3
COG
3 letters
ISO numeric
178
3 digits
Calling prefix
+242
Telephone reference

Republic of the Congo at a glance

The ISO country identifiers for Republic of the Congo are CG, COG, and 178. Select the format your form or system requests.

Namename
Republic of the Congo
Native name in sourcenative_name
République du Congo
Capital / administrative centrecapital
Brazzaville
Continentcontinent
Africa (AF)
Regionregion
Africa
Sub-regionsub_region
Sub-Saharan Africa

Calling prefixes, currency & internet domain

International calling prefixdial_code
+242
Currency referencecurrency_code
XAFCentral African CFA Franc
Country-code domaintld
.cg

A listed telephone prefix may combine a shared country calling code with an area code. It is not a complete phone number.

Languages & native names

Languages listed for Republic of the Congo in the reference source, with native language names where available. This is not an exhaustive list of the languages spoken or a statement of their legal status.

FrenchFrançaisfr-CG
KongoKiKongokg
LingalaLingálaln-CG

The small codes are source language tags. A tag such as en-US includes a language and a regional variant; it is different from an ISO country code on its own.

Republic of the Congo time zones

1 identifier is listed for CG in IANA zone.tab, release 2026d. Time-zone identifiers describe clock-rule locations, not fixed UTC offsets.

  • Africa/Brazzaville

UTC offsets and daylight-saving rules depend on the date and location. Use the time-zone converter to compare local times for a chosen date.

ISO, sporting & legacy identifiers

These code systems serve different purposes. Similar-looking codes can refer to different places or organisations.

ISO alpha-2iso_alpha_2
CG
ISO alpha-3iso_alpha_3
COG
ISO numericiso_numeric
178
FIFA referencefifa
CGO
IOC referenceioc
CGO
Legacy FIPS-style referencefips
CF

FIFA and IOC values are source references, not confirmation of current membership or event participation. FIPS 10-4 was withdrawn in 2008; legacy FIPS-style values are for interpreting older datasets and must not replace current ISO codes.

Sources & reference notes

The base record is from ListBase.org v2026.08. English and native country names use Annexare Countries, language names use Annexare and runtime display-name data, time zones use IANA 2026d, and the locally hosted flag is from flag-icons.