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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.

Pray Now!
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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 God is the King of all the earth; sing praises with a psalm!
readPsalm 47:7

Pray for those who live for idols that will never satisfy their hearts, asking that someone will tell them that God is the King of all the earth so that they will turn to Him in repentance and praise.

He will tend his flock like a shepherd; he will gather the lambs in his arms; he will carry them in his bosom, and gently lead those that are with young.
readIsaiah 40:11

Pray that the lost will come to know the tender care of the Good Shepherd, who gathers the lambs in His arms and carries them close to His heart.

Praying at all times in the Spirit, with all prayer and supplication. To that end, keep alert with all perseverance, making supplication for all the saints.
readEphesians 6:18

Pray that as people place their faith in Christ, they will be alert and persistent in prayer for all believers, offering their requests with thanksgiving.

For as we share abundantly in Christ’s sufferings, so through Christ we share abundantly in comfort too.
read2 Corinthians 1:5

When any who might believe suffer for the sake of the gospel, ask God to deepen their understanding of His grace so that they may share it freely with those who have not received it.

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

Strategic Progress Index
All

1 people group

PhotoPeople Group IDNameCountryPopulation ▼Strategic 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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