Batak-Nias of Sumatra People Cluster

People Cluster: Batak-Nias of Sumatra What is a People Cluster?

Population

11,857,000

0.9% estimated
Annual Growth Rate

People Groups (Across Countries)

People Groups
(by Country)

Unreached Groups (by Country)

Affinity Bloc

Malay Peoples

Cluster Progress

The Joshua Project Progress Scale is an estimate of the progress of church planting among a people group, people cluster, country or language. The Progress Scale is derived from people group values for percent Evangelical and percent Christian Adherent.

Level	Description	Criteria
0.3	Unreached Frontier - Less than 1 in 1,000 (0.1%) identify as Christians in any way	Evangelicals <=0.1% Professing Christians <=0.1%
0.7	Unreached not Frontier - Few evangelicals and little, if any, history of Christianity.	Evangelicals >0.1% and <=2% Professing Christians >0.1% and <=5%
1	Unreached (All) - Few evangelicals and few who identify as Christians. Little, if any, history of Christianity.	Evangelicals <= 2% Professing Christians <= 5%
2	Minimally reached - Few evangelicals, but significant number who identify as Christians.	Evangelicals <= 2% Professing Christians > 5% and <= 50%
3	Superficially reached - Few evangelicals, but many who identify as Christians. In great need of spiritual renewal and commitment to biblical faith.	Evangelicals <= 2% Professing Christians > 50%
4	Partially reached - Evangelicals have a modest presence.	Evangelicals > 2% and <= 10%
5	Significantly reached - Evangelicals have a significant presence.	Evangelicals > 10%

Map Notes

Click column headings for sorting ▲▼

Progress Scale: ☀︎●●●●● (
☀︎
= Frontier Unreached Peoples)
Photo	People Group ▲	Global Population	Peoples by Country	Unreached by Country	% Unreached Peoples	Popl in Unreached	% Popl in Unreached	Progress Scale	Primary Religion	% Christian Adherent	% Evangelical	Est. Workers Needed *
	Batak Angkola	1,274,000	1	0	0.0 %	0	0.0 %	4 ●	Islam	10.0 %	4.7 %	-1 -
	Batak Dairi	2,109,000	1	0	0.0 %	0	0.0 %	5 ●	Christianity	79.0 %	16.5 %	-1 -
	Batak Karo	1,019,000	1	0	0.0 %	0	0.0 %	5 ●	Christianity	70.0 %	11.0 %	-1 -
	Batak Pakpak	59,000	1	0	0.0 %	0	0.0 %	4 ●	Christianity	70.0 %	6.0 %	-1 -
	Batak Simalungun	1,691,000	1	0	0.0 %	0	0.0 %	5 ●	Christianity	65.0 %	13.0 %	-1 -
	Batak, Silindung	585,000	1	0	0.0 %	0	0.0 %	5 ●	Christianity	97.0 %	14.0 %	-1 -
	Batak, Toba	2,560,000	2	0	0.0 %	0	0.0 %	5 ●	Christianity	97.0 %	21.2 %	-1 -
	Batu Nias	32,000	1	0	0.0 %	0	0.0 %	4 ●	Christianity	65.0 %	4.0 %	-1 -
	Engganese	2,100	1	0	0.0 %	0	0.0 %	4 ●	Christianity	75.0 %	4.0 %	-1 -
	Mandailing	1,336,000	2	2	100.0 %	1,336,000	100.0 %	0 ☀︎	Islam	0.1 %	0.1 %	27
	Mentawaian	82,000	1	0	0.0 %	0	0.0 %	4 ●	Christianity	80.0 %	8.0 %	-1 -
	Niassan, Nias	1,056,000	1	0	0.0 %	0	0.0 %	5 ●	Christianity	90.0 %	17.0 %	-1 -
	Pakpak Boang	22,000	1	1	100.0 %	22,000	100.0 %	1 ●	Islam	0.5 %	0.5 %	1
	Sikule	30,000	1	1	100.0 %	30,000	100.0 %	0 ☀︎	Islam	0.0 %	0.0 %	1
Totals:	14 Peoples (across countries)	11,857,000	16	4	25.0 %	1,388,000	11.7 %	●	Christianity	65.3%	13.1%	29

* An estimate of the number of pioneer workers needed for initial church planting among unreached people groups by country. Estimates are calculated only for unreached people groups and are based on ratio of 1 worker-unit (single person or married couple) per 50,000 living in an unreached people group by country, or for example one team of four worker-units per 200,000 people. Some workers may already be onsite. Many more workers are needed beyond this initial estimate.

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