Total population3,066,185people
Households1,418,345households
Average age44.7yrs
Sex ratioMale1,530,650peopleFemale1,535,535people49.9%50.1%
Population change
Change over time
4-year trendUnit: people
2,963,117 in 20223,066,185 in 2026
Up 3.5% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in30,030people
Moved out27,760people
Net migration2,270people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Gyeonggi | 5,707 |
| Seoul | 3,804 |
| Chungcheongnam-do | 457 |
| Gangwon | 327 |
| Chungcheongbuk-do | 268 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Gyeonggi | 4,412 |
| Seoul | 2,803 |
| Chungcheongnam-do | 581 |
| Gangwon | 354 |
| Chungcheongbuk-do | 259 |
Inflows exceeded outflows in every one of the past 12 months, for a net gain of 22,519.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 1,530,650Female 1,535,535
Age structure
Unit: %
Youth 10.6%Working age 69.5%Seniors 19.9%
50s is the largest group, at 513,877 people.
Population ranking
Population by region
As of September 2026| Region | Share | ||
|---|---|---|---|
| Seo-gu | 668,150 | 21.8% | 41.8 yrs |
| Bupyeong-gu | 487,282 | 15.9% | 45.9 yrs |
| Namdong-gu | 478,603 | 15.6% | 46 yrs |
| Michuhol-gu | 419,123 | 13.7% | 45.9 yrs |
| Yeonsu-gu | 410,369 | 13.4% | 41.6 yrs |
| Gyeyang-gu | 275,966 | 9% | 47 yrs |
| Jung-gu | 180,001 | 5.9% | 42.5 yrs |
| Ganghwa-gun | 69,541 | 2.3% | 55.8 yrs |
| Dong-gu | 57,875 | 1.9% | 49.7 yrs |
| Ongjin-gun | 19,275 | 0.6% | 54.2 yrs |
The top three areas hold 53.3% of the population of Incheon.
Frequently asked questionsβ
Incheon has 3,066,185 residents as of September 2026., 23,023 more than a year earlier.
Seo-gu, home to 668,150 residents (21.8% of Incheon).
It is 44.7 as of September 2026., 1 years below the national average of 45.7. Among its districts, Yeonsu-gu is youngest at 41.6 and Ganghwa-gun oldest at 55.8.
It rose 3.5% over 4 years, from 2,963,117 in 2022 to 3,066,185 in September 2026.
As of August 2026, the most people moved in from Gyeonggi (5,707) and the most moved out to Gyeonggi (4,412). Inflows exceeded outflows in every one of the past 12 months, for a net gain of 22,519.
This is resident registration data from Korea's Ministry of the Interior and Safety. Figures are as of the end of September 2026 and are updated monthly. The data is open under KOGL Type 1.
Resident registration counts people at their registered address. The census counts them where they actually live. The gap is widest in university towns and industrial areas, where many people never change their registered address.
Sources π
- Resident registration data, Ministry of the Interior and SafetyKOGL Type 1 Β· as of September 2026 Β· updated monthly
- Internal Migration Statistics, Statistics Korea (KOSIS)KOGL Type 1 Β· as of August 2026 Β· updated monthly