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PEOPLE GROUP PROFILE

The Sepik Plains of Papua New Guinea

The Sepik Plains of Papua New Guinea, numbering approximately 6,200 people, are No Longer Unreached. They are an indigenous ethnic group of Papua New Guinea. They mostly adhere to Roman Catholicism and Keak is their primary language.

Photo by Google. (2026). Image generated by Gemini 2.5 Flash: Sepik Plains

Fast Facts:

Affinity Group: Pacific Islander Peoples
Country: Papua New Guinea
People Cluster: New Guinea
Primary Language(s): Keak (keh)
Primary Religion(s): Roman Catholicism
Population: 6,200
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 2% or Greater but Less than 5% Evangelical
People Group ID: PG010435
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Pray for the Sepik Plains of Papua New Guinea

Join others around the world in praying for the lost to be saved, the gospel to advance, the global Church to grow, and for laborers to be sent out and sustained in the harvest.

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Dig Deeper (Religion):

Primary Religion: Roman Catholicism
Religious Affiliation: Christianity

82%
%
Roman Catholicism Adherents

Dig Deeper (Language):

Primary Language: Keak
Language Family: Ndu

65%
%
Mevembet Speakers

Media Resources in Keak:

Films:

No film resources are listed for this language.

Provided by the Jesus Film Project

View all resources

Bible Resources in Keak:

No Bible resources are listed for this language.

Provided by Faith Comes by Hearing

Or check out the Keak bible at Bible.com

Linked from YouVersion

View all resources

SPI: No longer Unreached

The Sepik Plains are No Longer Unreached, which means there are more than 2% evangelical Christian populations and there are churches consistent with evangelical faith and practice. There is still more to be done among them.

Next steps for the Sepik Plains:
Empower local believers to begin praying for their own people
Continue gospel seed sowing and church planting
Encourage local leaders to being leading church planting strategy and looking for Unreached and Unengaged groups nearby

Pray specifically for the Sepik Plains of Papua New Guinea

For my own sake, for my own sake, I do it, for how should my name be profaned? My glory I will not give to another.
readIsaiah 48:11

Pray that those who have been living for their own glory will turn to the One who is worthy of all praise and find their true identity in Him.

The heavens declare the glory of God, and the sky above proclaims his handiwork. Day to day pours out speech, and night to night reveals knowledge.
readPsalm 19:1-2

Pray that the lost will see the glory of God revealed in the heavens, that they will hear the good news, and that their hearts will be softened to respond to God’s call, turning to Him in repentance and faith in Jesus Christ for salvation.

Remember your mercy, O LORD, and your steadfast love, for they have been from of old.
readPsalm 25:6

Pray that as people place their faith in Christ, they will remember the merciful nature and steadfast love of God as they walk with Him daily.

Jesus said to them again, "Peace be with you. As the Father sends me, even so I am sending you."
readJohn 20:21

Ask God to raise up and send out believers cross-culturally who will go out in His authority and be sustained by His peace as they share the gospel with the lost.

Sepik Plains Across Countries (ROP3 - 108853) reported in the following countries:

Strategic Progress Index
All

1 people group

PhotoPeople Group IDNameCountryPopulationStrategic Progress IndexLanguageReligion ▼
Sepik PlainsPG010435Sepik PlainsPapua New Guinea6,200No Longer UnreachedKeakRoman Catholicism

To download a comprehensive people group list in spreadsheet form, visit our Research Data page.

Peoplegroups.org relies on updates from the field and other organizations for much of our data, so if you have any updates, please contact us. We use various international naming standards. For a list of these standards and fields, visit our Data Standards section.

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