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Registered foreigners are counted across 192 nationalities.

South Sudan

People registered with South Sudan nationality number 36, which is less than 0.1% of all registered foreigners and ranks 141 in size. Compared with 8 in 2015, 10 years earlier, that is an increase of about 350%. They live in 15 districts, and the largest counts are Gangwon-do Goseong-gun with 10, Gangwon-do Sokcho-si with 6, and Seoul Gwanak-gu with 5. The largest age group is 25-29 at 38.9%, and men are 72.2%. This value alone is based on staying foreigners. Estimated mother tongues are Nuer at 12.7% and Southwestern Dinka at 11.2%.

Source: MOJ Statistical Yearbook on Immigration and Foreign Policy 2025 (registered foreigners by nationality, registered foreigners by nationality and district, registered foreigners by status of stay), staying foreigners by nationality and age

The index of dissimilarity, the isolation index, and the location quotient are calculated from the open dataset.

Table 1.Key indicators and benchmarks, 2025Unit: people, organizations, index

Year 2025

Indicators	South Sudan	All registered foreigners	Relative to total
Registered foreigners	36	1,604,920	under 0.1% of the total
Districts of residence	15	250	6.0% of the total
Index of dissimilarity (D)	-	0.280	-
Isolation index	-	0.045	-
Interaction with Koreans	-	0.955	-
Continent	-	-	-

Source: MOJ Statistical Yearbook (registered foreigners by nationality), segregation indicators from the open dataset.

Note: the dissimilarity index D measures how far a nationality's distribution across districts differs from that of Korean nationals; 0 means the two distributions match and 1 means complete separation. Isolation is the probability that a member meets someone of the same nationality, and interaction the probability of meeting a Korean resident. In the All registered foreigners column the three indices treat all registered foreigners as one group and use the same formulas. In the Relative to total column, rank 1 is the highest value among nationalities with 100 or more registered foreigners that year; in the continent row that column gives this nationality's share of all registered foreigners from the continent.

Figure 1.South Sudan nationals among registered foreigners, 2006–2025Unit: 10,000 persons

Source: MOJ Statistical Yearbook, each year.

Note: The vertical scale resets to the size of the selected nationality.

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Year	South Sudan	Vietnam
2006	0	52,157
2007	0	67,197
2008	0	79,848
2009	0	86,166
2010	0	98,225
2011	0	110,564
2012	2	114,211
2013	1	113,843
2014	3	122,571
2015	8	128,042
2016	15	137,769
2017	18	151,385
2018	13	170,707
2019	15	187,334
2020	23	181,415
2021	27	178,928
2022	31	196,883
2023	33	227,930
2024	34	261,581
2025	36	293,907

Table 2.South Sudan nationality, top 10 districts, 2025Unit: persons, %

Year 2025

Rank	District	South Sudan Nationality	Share of local foreigners
1	Gangwon-do Goseong-gun	10	0.5
2	Gangwon-do Sokcho-si	6	0.3
3	Seoul Gwanak-gu	5	0.0
4	Incheon Bupyeong-gu	3	0.0
5	Seoul Yongsan-gu	2	0.0
6	Gangwon-do Chuncheon-si	1	0.0
7	Gyeonggi-do Goyang-si Deogyang-gu	1	0.0
8	Gyeonggi-do Yangju-si	1	0.0
9	Gyeonggi-do Uiwang-si	1	0.1
10	Gyeongsangbuk-do Gyeongsan-si	1	0.0

Source: MOJ Statistical Yearbook (registered foreigners by district and nationality).

Note: Nationwide, South Sudan nationality is 18.3% of all registered foreigners, so a district where the share among its foreigners is above this has relatively many of them.

Table 3.10 districts with the highest location quotient, 2025Unit: people, ratio, %

Year

Rank	District	South Sudan Nationality	Location quotient (LQ)	Share of local foreigners

Source: Location quotient from the open dataset.

Note: the location quotient is the local share divided by the national share; above 1.5 counts as over-representation.

Table 4.By status of stay South Sudan nationality, 2025Unit: persons, %

Year 2025

Visa category	Persons	Share
Student(D2)	23	63.9
Other(G1)	4	11.1
Arts & Entertainment(E6)	3	8.3
Specialized Occupation(E5)	2	5.6
Other statuses(ETC)	2	5.6
General Trainee(D4)	1	2.8
Residential(F2)	1	2.8

Source: MOJ Statistical Yearbook (registered foreigners by status of stay and nationality).

Note: The rows of this table add to 36, the whole of the South Sudan nationality.

Table 5.Age and sex, 2025Unit: persons, %

Year 2025

Age group	Total	Male	Female	Share
0-4	0	0	0	0.0
5-9	0	0	0	0.0
10-14	0	0	0	0.0
15-19	2	2	0	5.6
20-24	10	3	7	27.8
25-29	14	11	3	38.9
30-34	6	6	0	16.7
35-39	3	3	0	8.3
40-44	1	1	0	2.8
45-49	0	0	0	0.0
50-54	0	0	0	0.0
55-59	0	0	0	0.0
60+	0	0	0	0.0

Source: MOJ Statistical Yearbook (staying foreigners by nationality and age).

Only this table counts all foreign residents, so it totals 36 rather than the 36 registered foreigners

Figure 2.Composition by age and sex, 2025Unit: %

Year 2025

Source: MOJ Statistical Yearbook (staying foreigners by nationality and age).

Note: The bar length is the share each cell holds within the whole nationality. This figure alone uses staying foreigners, so its total differs from registered foreigners.

Figure 3.Change in status-of-stay composition, 2012–2025Unit: %

Source: MOJ Statistical Yearbook, each year (registered foreigners by status of stay and nationality).

Note: The share each status holds within this nationality in that year. The five largest statuses in 2025 are drawn.

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Year
2011	0.0	0.0	0.0	0.0	0.0
2012	50.0	0.0	0.0	0.0	0.0
2013	100.0	0.0	0.0	0.0	0.0
2014	33.3	33.3	0.0	0.0	0.0
2015	25.0	25.0	0.0	0.0	0.0
2016	26.7	20.0	0.0	0.0	0.0
2017	27.8	11.1	5.6	0.0	0.0
2018	30.8	30.8	15.4	0.0	0.0
2019	40.0	26.7	13.3	6.7	0.0
2020	52.2	13.0	8.7	4.3	8.7
2021	48.1	18.5	7.4	7.4	7.4
2022	51.6	16.1	3.2	6.5	6.5
2023	51.5	6.1	6.1	6.1	9.1
2024	44.1	8.8	8.8	5.9	5.9
2025	63.9	11.1	8.3	5.6	5.6

Figure 4.Residential segregation and exposure over time, Unit: index

Indicators

Source: Segregation indicators from the open dataset.

Note: the dissimilarity index D measures how far a nationality's distribution across districts differs from that of Korean nationals, isolation is the probability that a member meets someone of the same nationality, and interaction the probability of meeting a Korean resident. The three run on different ranges, so they are selected one at a time.

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Year	Index of dissimilarity (D)	Isolation index	Interaction with Koreans

Table 6.South Sudan nationality, mother-tongue compositionUnit: %

First language		Share
Nuer		12.7
Southwestern Dinka		11.2
Zande		8.2
Southeastern Dinka		8.1
Northeastern Dinka		7.5
South Central Dinka		7.0
Bari		6.3
Arabic		5.8

Source: Ethnologue 24th edition, first-language shares by country.

Note: the estimated demand on the language page is this share multiplied by the registered foreign population of each nationality. Shares below 0.5% are not listed, and a person who speaks more than one language is not distinguished.

Figure 5.By province, South Sudan nationality, 2025Unit: persons

Year 2025

Count range

Note: The boundaries are shapes simplified for display and are drawn as pen lines. The fill values are the provincial totals from the yearbook and do not depend on the shapes.

Source: MOJ Statistical Yearbook (registered foreigners by nationality and district), summed to the province level.

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Province	South Sudan Nationality	Share of national
Gangwon-do	17	47.2
Seoul	10	27.8
Incheon	4	11.1
Gyeonggi-do	3	8.3
Gyeongsangbuk-do	1	2.8
Busan	1	2.8