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Registered foreigners are counted across 192 nationalities.

Mongolia

People registered with Mongolia nationality number 42,049, which is 2.6% of all registered foreigners and ranks 11 in size. Compared with 18,493 in 2015, 10 years earlier, that is an increase of about 127.4%. They live in 244 districts, and the largest counts are Seoul Jungnang-gu with 2,081, Seoul Gwanak-gu with 1,676, and Gyeonggi-do Uijeongbu-si with 1,503. The index of dissimilarity (D) from Koreans is 0.379, the isolation index is 0.002, and interaction with Koreans is 0.964. The highest location quotient (LQ) is in Chungcheongnam-do Seocheon-gun at 10.8, where this nationality is 0.9% of the foreigners in that district. The continent of origin is East Asia. The largest age group is 20-24 at 16.4%, and men are 45.2%. This value alone is based on staying foreigners. Estimated mother tongues are Mongolian at 86.2% and Oirat at 7.1%.

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	Mongolia	All registered foreigners	Relative to total
Registered foreigners	42,049	1,604,920	2.6% of the total
Districts of residence	244	250	97.6% of the total
Index of dissimilarity (D)	0.379	0.280	rank 96 of 107
Isolation index	0.0018	0.045	rank 17 of 107
Interaction with Koreans	0.964	0.955	rank 13 of 107
Continent	East Asia	568,673 (35.4% of the total)	7.4% of those from East Asia

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.Mongolia 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	Mongolia	Vietnam
2006	19,160	52,157
2007	20,473	67,197
2008	21,201	79,848
2009	21,016	86,166
2010	21,775	98,225
2011	21,278	110,564
2012	19,779	114,211
2013	18,382	113,843
2014	17,334	122,571
2015	18,493	128,042
2016	20,116	137,769
2017	22,570	151,385
2018	24,218	170,707
2019	24,845	187,334
2020	24,515	181,415
2021	23,722	178,928
2022	27,884	196,883
2023	32,466	227,930
2024	37,664	261,581
2025	42,049	293,907

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

Year 2025

Rank	District	Mongolia Nationality	Share of local foreigners
1	Seoul Jungnang-gu	2,081	30.4
2	Seoul Gwanak-gu	1,676	8.5
3	Gyeonggi-do Uijeongbu-si	1,503	18.3
4	Seoul Seongbuk-gu	1,489	10.0
5	Seoul Gwangjin-gu	1,332	7.4
6	Seoul Gangbuk-gu	1,128	16.2
7	Gyeonggi-do Gimpo-si	760	2.9
8	Incheon Michuhol-gu	723	4.9
9	Gyeonggi-do Hwaseong-si	720	1.3
10	Gyeonggi-do Siheung-si	717	1.7

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

Note: Nationwide, Mongolia nationals make up 2.6% of all registered foreigners, so an area whose share is above that holds relatively many of them.

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

Year 2025

Rank	District	Mongolia Nationality	Location quotient (LQ)	Share of local foreigners
1	Chungcheongnam-do Seocheon-gun	417	10.8	0.9
2	Seoul Jungnang-gu	2,081	6.7	0.6
3	Seoul Gangbuk-gu	1,128	4.9	0.4
4	Seoul Gwangjin-gu	1,332	4.9	0.4
5	Seoul Seongbuk-gu	1,489	4.3	0.4
6	Seoul Gwanak-gu	1,676	4.3	0.4
7	Gyeonggi-do Uijeongbu-si	1,503	4.0	0.3
8	Chungcheongnam-do Hongseong-gun	258	3.1	0.3
9	Chungcheongbuk-do Cheongju-si Heungdeok-gu	693	2.9	0.2
10	Chungcheongbuk-do Eumseong-gun	216	2.8	0.2

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 Mongolia nationality, 2025Unit: persons, %

Year 2025

Visa category	Persons	Share
Student(D2)	13,180	31.3
General Trainee(D4)	6,330	15.1
Dependent Family(F3)	4,645	11.0
Non-professional Employment(E9)	3,828	9.1
Other(G1)	3,513	8.4
Marriage Migration(F6)	2,179	5.2
Job Seeker(D10)	1,819	4.3
Residential(F2)	1,786	4.2
Other statuses	4,769	11.3

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

Note: The rows of this table add to 42,049, the whole of the Mongolia nationality.

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

Year 2025

Age group	Total	Male	Female	Share
0-4	2,211	1,111	1,100	3.7
5-9	2,519	1,279	1,240	4.2
10-14	2,292	1,090	1,202	3.8
15-19	5,717	2,689	3,028	9.5
20-24	9,848	4,281	5,567	16.4
25-29	8,276	3,732	4,544	13.8
30-34	6,990	3,497	3,493	11.6
35-39	7,328	3,614	3,714	12.2
40-44	4,906	2,154	2,752	8.2
45-49	3,437	1,393	2,044	5.7
50-54	2,800	1,024	1,776	4.7
55-59	1,738	587	1,151	2.9
60+	1,946	673	1,273	3.2

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

Only this table counts all foreign residents, so it totals 60,008 rather than the 42,049 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, 2008–2025Unit: %

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.

View as table

Year
2008	8.0	6.3	4.5	59.4	0.0
2009	10.6	7.8	5.2	55.7	0.0
2010	12.5	8.4	5.8	56.0	1.3
2011	14.2	9.6	6.8	50.7	1.5
2012	15.2	10.0	8.0	45.4	0.0
2013	14.7	8.3	7.5	46.4	0.0
2014	14.5	7.4	7.7	44.8	0.0
2015	13.7	13.0	9.5	38.1	0.0
2016	13.8	15.0	12.7	32.6	0.0
2017	15.5	17.2	13.2	28.7	0.0
2018	18.2	17.4	12.7	25.1	3.1
2019	23.1	12.0	13.0	23.2	3.4
2020	24.4	9.3	13.0	20.5	0.0
2021	24.2	11.6	13.2	17.8	0.0
2022	22.6	18.1	12.2	15.2	4.1
2023	24.5	18.1	12.1	12.6	5.9
2024	27.8	16.8	11.4	10.7	7.8
2025	31.3	15.1	11.0	9.1	8.4

Figure 4.Residential segregation and exposure over time, 2014–2025Unit: 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
2014	0.369	0.001	0.969
2015	0.357	0.001	0.970
2016	0.355	0.001	0.970
2017	0.362	0.001	0.971
2018	0.367	0.001	0.970
2019	0.359	0.001	0.970
2020	0.358	0.001	0.973
2021	0.359	0.001	0.974
2022	0.367	0.001	0.972
2023	0.374	0.001	0.969
2024	0.378	0.002	0.967
2025	0.379	0.002	0.964

Table 6.Mongolia nationality, mother-tongue compositionUnit: %

First language		Share
Mongolian		86.2
Oirat		7.1
Kazakh		3.8
Chinese		1.4
Tuvan		1.3

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, Mongolia 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	Mongolia Nationality	Share of national
Seoul	12,402	29.5
Gyeonggi-do	11,960	28.4
Incheon	3,227	7.7
Chungcheongnam-do	2,738	6.5
Chungcheongbuk-do	1,988	4.7
Daegu	1,470	3.5
Jeollabuk-do	1,286	3.1
Gyeongsangbuk-do	1,251	3.0
Gyeongsangnam-do	1,095	2.6
Daejeon	1,044	2.5
Jeollanam-do	798	1.9
Gwangju	791	1.9
Busan	785	1.9
Gangwon-do	553	1.3
Ulsan	317	0.8
Jeju-do	291	0.7
Sejong	53	0.1