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PEOPLE GROUP PROFILE

The Kusaiean of Nauru

The Kusaiean of Nauru, numbering approximately 125 people, are No Longer Unreached. They are a Micronesian ethnic group indigenous to the Kosrae Island in the Federated States of Micronesia. They are an Diaspora people in the Micronesian people cluster of the Pacific Islander Peoples affinity bloc. Their primary language is Kosraean and their primary religion is Protestantism.

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

Fast Facts:

Affinity Group: Pacific Islander Peoples
Country: Nauru
People Cluster: Micronesian
Primary Language(s): Kosraean (kos)
Primary Religion(s): Protestantism
Population: 125
Strategic Progress Index (SPI): No Longer Unreached
Global Status of Evangelical Christianity (GSEC): 10% or Greater Evangelical
People Group ID: PG009560
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Pray for the Kusaiean of Nauru

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Dig Deeper (Religion):

Primary Religion: Protestantism
Religious Affiliation: Christianity

—
%
Protestantism Adherents

Dig Deeper (Language):

Primary Language: Kosraean
Language Family: Austronesian

100%
%
Kosraean Speakers

Media Resources in Kosraean:

Films:

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Bible Resources in Kosraean:

Provided by Faith Comes by Hearing

Or check out the Kosraean bible at Bible.com

Linked from YouVersion

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Explore Lostness and Next Steps

Unengaged and Unreached

Strategic Priority Index (SPI): Unengaged and Unreached (SPI: 2), which means there are less than 2% evangelical Christian populations among which there are no known efforts focused on establishing self-sustaining churches consistent with evangelical faith and practice.
Lostness Priority Index (LPI): Moderately Reached People Group, (LPI: 5), 6% to 20% Evangelical.
Global Status of Evangelical Christianity (GSEC): 10% or Greater Evangelical (GSEC: 6), this people group is greater than or equal to 10% evangelical

Next steps for the Kusaiean:
Begin signifcant prayer and fasting for this group
Send cross-cultural teams to discover and research this people group
Begin gospel seed sowing and church planting among this group

SPI: Unreached yet Engaged

The Kusaiean are Engaged yet Unreached, which means there are less than 2% evangelical Christian populations but there are sustained efforts at establishing self-sustaining churches consistent with evangelical faith and practice.

Next steps for the Kusaiean:
Continue prayer and fasting for this group
Continue gospel seed sowing and church planting among this group
Begin training up local leaders to lead and develop strategies to reach their own people

SPI: No longer Unreached

The Kusaiean 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 Kusaiean:
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 Kusaiean of Nauru

For one will scarcely die for a righteous person—though perhaps for a good person one would dare even to die—but God shows his love for us in that while we were still sinners, Christ died for us.
readRomans 5:7-8

Pray for the many who don't yet understand the hope of the gospel, and pray that God will reveal to them that while they were in darkness, Christ died for them.

And he made from one man every nation of mankind to live on all the face of the earth, having determined allotted periods and the boundaries of their dwelling place, that they should seek God, and perhaps feel their way toward him and find him. Yet he is actually not far from each one of us.
readActs 17:26-27

Pray that the lost will seek God and find Him, for He is not far from each one of us. Pray that they will have opportunities to access the gospel, learn God's purpose for their lives, and believe in Him.

Have this mind among yourselves, which is yours in Christ Jesus, who, though he was in the form of God, did not count equality with God a thing to be grasped, but emptied himself, by taking the form of a servant, being born in the likeness of men.
readPhilippians 2:5-7

Pray that as people place their faith in Christ, they will imitate His humility in all they do.

Beloved, I pray that all may go well with you and that you may be in good health, as it goes well with your soul.
read3 John 1:2

Ask God to grant protection and good health — both physical and spiritual — to those He sends cross-culturally to share the gospel.

Kosraen Across Countries (ROP3 - 105256) reported in the following countries:

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 Definitions page.

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