KIRD Korea Immigration Regional Dashboard
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Registered foreigners are counted across 192 nationalities.

Japan

People registered with Japan nationality number 29,350, which is 1.8% of all registered foreigners and ranks 15 in size. Compared with 23,046 in 2015, 10 years earlier, that is an increase of about 27.4%. They live in 250 districts, and the largest counts are Seoul Mapo-gu with 1,102, Seoul Yongsan-gu with 903, and Seoul Seodaemun-gu with 877. The index of dissimilarity (D) from Koreans is 0.253, the isolation index is 0.001, and interaction with Koreans is 0.966. The highest location quotient (LQ) is in Gyeonggi-do Gapyeong-gun at 10.4, where this nationality is 0.6% of the foreigners in that district. The continent of origin is East Asia. The largest age group is 25-29 at 13.7%, and men are 31%. This value alone is based on staying foreigners. Estimated mother tongues are Japanese at 97.8% and Central Okinawan at 0.8%.

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
2025
IndicatorsJapanAll registered foreignersRelative to total
Registered foreigners29,3501,604,9201.8% of the total
Districts of residence250250All districts
Index of dissimilarity (D)0.2530.280rank 106 of 107
Isolation index0.00100.045rank 22 of 107
Interaction with Koreans0.9660.955rank 8 of 107
ContinentEast Asia568,673 (35.4% of the total)5.2% 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.Japan 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.

View as table
YearJapanVietnam
200617,68252,157
200718,07367,197
200818,25179,848
200918,59486,166
201019,44898,225
201121,126110,564
201222,648114,211
201323,087113,843
201423,237122,571
201523,046128,042
201623,267137,769
201723,343151,385
201823,892170,707
201924,316187,334
202022,798181,415
202124,479178,928
202226,656196,883
202327,381227,930
202428,005261,581
202529,350293,907
Table 2.Japan nationality, top 10 districts, 2025Unit: persons, %
2025
RankDistrictJapan NationalityShare of local foreigners
1Seoul Mapo-gu1,1029.4
2Seoul Yongsan-gu9036.9
3Seoul Seodaemun-gu8775.3
4Seoul Dongdaemun-gu8174.0
5Seoul Gwanak-gu7753.9
6Gyeonggi-do Hwaseong-si7251.3
7Seoul Gangnam-gu5699.2
8Seoul Gwangjin-gu5112.8
9Seoul Seongbuk-gu5063.4
10Seoul Gangseo-gu4416.6

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

Note: Nationwide, Japan nationals make up 1.8% 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, %
2025
RankDistrictJapan NationalityLocation quotient (LQ)Share of local foreigners
1Gyeonggi-do Gapyeong-gun37010.40.6
2Seoul Yongsan-gu9037.80.4
3Seoul Mapo-gu1,1025.40.3
4Seoul Seodaemun-gu8775.10.3
5Seoul Jongno-gu3574.60.3
6Seoul Dongdaemun-gu8174.10.2
7Seoul Jung-gu2643.90.2
8Seoul Gwanak-gu7752.80.2
9Seoul Gwangjin-gu5112.70.2
10Jeollabuk-do Sunchang-gun392.50.1

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 Japan nationality, 2025Unit: persons, %
2025
Visa categoryPersonsShare
Marriage Migration(F6)10,41035.5
Permanent Residence(F5)6,98623.8
Student(D2)2,9129.9
Working Holiday(H1)1,5965.4
Corporate Investment(D8)1,5545.3
General Trainee(D4)1,3354.5
Dependent Family(F3)1,0823.7
Specially Designated Activities(E7)7122.4
Other statuses2,7639.4

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

Note: The rows of this table add to 29,350, the whole of the Japan nationality.

Table 5.Age and sex, 2025Unit: persons, %
2025
Age groupTotalMaleFemaleShare
0-41,2196255941.7
5-92,0781,0391,0393.0
10-142,3621,0641,2983.4
15-193,0751,0192,0564.4
20-249,1252,2996,82613.0
25-299,6162,3197,29713.7
30-346,7321,5715,1619.6
35-395,1461,4063,7407.3
40-445,5381,6563,8827.9
45-495,6321,7803,8528.0
50-546,0132,0503,9638.5
55-595,4891,7963,6937.8
60+8,3503,2185,13211.9

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

Only this table counts all foreign residents, so it totals 70,375 rather than the 29,350 registered foreigners

Figure 2.Composition by age and sex, 2025Unit: %
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
20080.023.65.70.09.6
20090.027.16.00.09.5
20100.029.06.10.09.3
20110.029.26.22.89.6
201214.728.76.13.010.1
201321.729.16.12.810.3
201425.530.06.22.59.9
201526.531.06.82.59.4
201627.231.17.22.59.2
201727.331.47.33.48.7
201827.731.17.74.18.3
201928.830.97.94.37.5
202032.532.85.70.07.5
202132.430.56.80.06.7
202231.627.210.70.06.1
202332.525.910.64.55.9
202433.925.110.15.05.7
202535.523.89.95.45.3
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.

View as table
YearIndex of dissimilarity (D)Isolation indexInteraction with Koreans
20140.2880.0010.975
20150.2770.0010.974
20160.2750.0010.973
20170.2720.0010.973
20180.2680.0010.972
20190.2660.0010.971
20200.2460.0010.974
20210.2540.0010.975
20220.2640.0010.973
20230.2630.0010.970
20240.2550.0010.968
20250.2530.0010.966
Table 6.Japan nationality, mother-tongue compositionUnit: %
First languageShare
Japanese97.8
Central Okinawan0.8

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, Japan nationality, 2025Unit: persons
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.

    View as table
    ProvinceJapan NationalityShare of national
    Seoul10,95337.3
    Gyeonggi-do7,13124.3
    Busan1,6655.7
    Incheon1,5915.4
    Gyeongsangnam-do1,2004.1
    Chungcheongnam-do1,1513.9
    Jeollanam-do7952.7
    Daegu7002.4
    Gyeongsangbuk-do6892.3
    Jeollabuk-do6782.3
    Gangwon-do6072.1
    Chungcheongbuk-do6052.1
    Daejeon4631.6
    Gwangju3651.2
    Ulsan3421.2
    Jeju-do2951.0
    Sejong1200.4