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Seoul Forest, Seongsudong1-ga, Seongdong-guSeongsu-dong Cafe Street, Seongsudong2-ga, Seongdong-guHan River & Dongho Bridge from Dalmajibong Park, Oksu-dong, Seongdong-guWangsimni Food Alley, Haengdang-dong, Seongdong-guMajang Livestock Market Entrance, Majang-dong, Seongdong-guSageun-dong Alley View, Sageun-dong, Seongdong-gu

Foreign Residents in Seongdong-gu, Seoul

Based on the MOIS local foreign resident survey, 2026

Foreign residents10,150peopleNaturalized citizens 1,044 people
Foreign resident share3.7%Of registered residents

Resident types

Seongdong-gu ranks 14th of 25 in Seoul by foreign residents.

By residence type

As of September 2026

Unit: %

Overseas Koreans 19.6%Other foreign nationals 30.3%Migrant workers 9.5%Marriage migrants 10.8%Foreign students 29.7%19.6%30.3%9.5%10.8%29.7%

Overseas Koreans 19.6%Other foreign nationals 30.3%Migrant workers 9.5%Marriage migrants 10.8%Foreign students 29.7%

TypePeopleShare
Overseas Koreans1,99119.6%
Other foreign nationals3,07830.3%
Migrant workers9619.5%
Marriage migrants1,10110.8%
Foreign students3,01929.7%

Other foreign nationals are the largest group at 3,078.

Age structure

By age group

As of September 2026
Age groupPeopleShare
Under 101982%
10s4614.5%
20s3,44033.9%
30s1,88018.5%
40s1,40213.8%
50s1,47614.5%
60s9769.6%
70+3173.1%

Residents in their 20s are the largest age group at 3,440.

Frequently asked questions❓

10,150 as of the 2026 survey, or 3.7% of its population.
Other foreign nationals form the largest group, at 3,078.
14th out of 25.
The 2026 edition of the annual local foreign resident survey by Korea's Ministry of the Interior and Safety. Population figures come from monthly resident registration data, so the two have different reference dates.

Sources 🌐