Total population218,342people
Households103,750households
Average age46.7yrs
Sex ratioMale113,351peopleFemale104,991people51.9%48.1%
Population change
Change over time
4-year trendUnit: people
221,609 in 2022218,342 in 2026
Down 1.5% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in1,678people
Moved out1,680people
Net migrationβ2people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Nam-gu | 372 |
| Jung-gu | 146 |
| Buk-gu | 88 |
| Dong-gu | 48 |
| Yangsan-si, Gyeongsangnam-do | 46 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Nam-gu | 291 |
| Jung-gu | 109 |
| Yangsan-si, Gyeongsangnam-do | 64 |
| Gijang-gun, Busan | 49 |
| Buk-gu | 39 |
Net migration varied across the past 12 months, totaling β80.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 113,351Female 104,991
Age structure
Unit: %
Youth 9.9%Working age 67.5%Seniors 22.6%
50s is the largest group, at 42,680 people.
Population ranking
Population by region
As of September 2026- YoungestBeomseo-eup42.7 yrs
- OldestDuseo-myeon62.7 yrs
| Region | Share | ||
|---|---|---|---|
| Beomseo-eup | 66,879 | 30.6% | 42.7 yrs |
| Eonyang-eup | 29,007 | 13.3% | 46.1 yrs |
| Onyang-eup | 28,014 | 12.8% | 45.5 yrs |
| Cheongnyang-eup | 22,072 | 10.1% | 44.2 yrs |
| Samnam-eup | 21,925 | 10% | 48.5 yrs |
| Onsan-eup | 18,330 | 8.4% | 47.6 yrs |
| Seosaeng-myeon | 8,333 | 3.8% | 52.8 yrs |
| Sangbuk-myeon | 7,860 | 3.6% | 57.3 yrs |
| Ungchon-myeon | 7,160 | 3.3% | 56.1 yrs |
| Dudong-myeon | 4,191 | 1.9% | 58.6 yrs |
| Duseo-myeon | 2,879 | 1.3% | 62.7 yrs |
| Samdong-myeon | 1,692 | 0.8% | 62.6 yrs |
The top three areas hold 56.7% of the population of Ulju-gun, Ulsan.
Frequently asked questionsβ
Ulju-gun, Ulsan has 218,342 residents as of September 2026., 377 fewer than a year earlier.
Beomseo-eup, home to 66,879 residents (30.6% of Ulju-gun, Ulsan).
It is 46.7 as of September 2026., 1 years above the national average of 45.7. Among its towns and townships, Beomseo-eup is youngest at 42.7 and Duseo-myeon oldest at 62.7.
It fell 1.5% over 4 years, from 221,609 in 2022 to 218,342 in September 2026.
As of August 2026, the most people moved in from Nam-gu (372) and the most moved out to Nam-gu (291). Net migration varied across the past 12 months, totaling β80.
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