Total population1,086,373people
Households502,387households
Average age44.9yrs
Sex ratioMale560,121peopleFemale526,252people51.6%48.4%
Population change
Change over time
4-year trendUnit: people
1,113,458 in 20221,086,373 in 2026
Down 2.4% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in8,855people
Moved out9,268people
Net migrationβ413people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Busan | 616 |
| Gyeongsangbuk-do | 490 |
| Gyeongsangnam-do | 475 |
| Seoul | 355 |
| Gyeonggi | 355 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Busan | 765 |
| Gyeongsangnam-do | 494 |
| Seoul | 489 |
| Gyeongsangbuk-do | 485 |
| Gyeonggi | 470 |
Outflows exceeded inflows in 11 of the past 12 months, for a net loss of 6,535.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 560,121Female 526,252
Age structure
Unit: %
Youth 11.0%Working age 69.0%Seniors 20.0%
50s is the largest group, at 194,587 people.
Population ranking
Population by region
As of September 2026The top three areas hold 67.8% of the population of Ulsan.
Frequently asked questionsβ
Ulsan has 1,086,373 residents as of September 2026., 6,616 fewer than a year earlier.
Nam-gu, home to 304,655 residents (28.0% of Ulsan).
It is 44.9 as of September 2026., 0.8 years below the national average of 45.7. Among its districts, Buk-gu is youngest at 41.9 and Ulju-gun oldest at 46.7.
It fell 2.4% over 4 years, from 1,113,458 in 2022 to 1,086,373 in September 2026.
As of August 2026, the most people moved in from Busan (616) and the most moved out to Busan (765). Outflows exceeded inflows in 11 of the past 12 months, for a net loss of 6,535.
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