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Population of Busan

As of September 2026

Total population3,229,467people
Households1,583,256households
Average age47.6yrs
Sex ratioMale1,568,318peopleFemale1,661,149people48.6%51.4%

Population change

Change over time

4-year trend

Unit: people

3,331,444 in 20223,302,740 in 20233,275,593 in 20243,249,975 in 20253,229,467 in 202620222023202420252026

3,331,444 in 20223,229,467 in 2026

Down 3.1% over the past 4 years.

Migration

As of August 2026

Monthly Overview

Moved in27,457people
Moved out28,088people
Net migrationβˆ’631people

Net migration by month

Unit: people

βˆ’731βˆ’1,244βˆ’1,152βˆ’815βˆ’844157βˆ’821βˆ’1,040βˆ’407βˆ’1,149βˆ’661βˆ’631SepOctNovDecJanFebMarAprMayJunJulAugβˆ’731 in Sep 2025βˆ’1,244 in Oct 2025βˆ’1,152 in Nov 2025βˆ’815 in Dec 2025βˆ’844 in Jan 2026157 in Feb 2026βˆ’821 in Mar 2026βˆ’1,040 in Apr 2026βˆ’407 in May 2026βˆ’1,149 in Jun 2026βˆ’661 in Jul 2026βˆ’631 in Aug 2026

Net inflowNet outflow

Top origins

Unit: people

RegionMoved in
Gyeongsangnam-do3,065
Seoul1,036
Gyeonggi1,000
Ulsan765
Gyeongsangbuk-do582

Top destinations

Unit: people

RegionMoved out
Gyeongsangnam-do2,950
Seoul1,483
Gyeonggi1,398
Gyeongsangbuk-do625
Ulsan616

Outflows exceeded inflows in 11 of the past 12 months, for a net loss of 9,338.

Want more detail on migration in Busan?See more Busan statistics on GData

Population structure

Population by age

As of September 2026

Population by age and sex

Unit: people

Under 1010s20s30s40s50sπŸ‘‘ 60s70s80s90s100+83,968135,844166,649201,168230,584256,361258,232169,49060,4915,4716080,083129,963160,909187,715224,764265,558291,234208,91894,88016,713406

Male 1,568,318Female 1,661,149

Age structure

Unit: %

Youth 9.2%Working age 65.1%Seniors 25.7%9.2%65.1%25.7%

Youth 9.2%Working age 65.1%Seniors 25.7%

60s is the largest group, at 549,466 people.

Population ranking

Population by region

As of September 2026
RegionShare
Haeundae-gu369,72711.4%47.1 yrs
Busanjin-gu364,18411.3%46.7 yrs
Saha-gu281,1848.7%49 yrs
Dongnae-gu270,5128.4%46.3 yrs
Buk-gu260,0698.1%48.5 yrs
Nam-gu254,9607.9%47.1 yrs
Yeonje-gu211,6036.6%46.8 yrs
Geumjeong-gu205,3416.4%49.3 yrs
Sasang-gu191,9125.9%49.3 yrs
Gijang-gun175,4825.4%44.8 yrs

The top three areas hold 31.4% of the population of Busan.

Frequently asked questions❓

Busan has 3,229,467 residents as of September 2026., 20,508 fewer than a year earlier.
Haeundae-gu, home to 369,727 residents (11.4% of Busan).
It is 47.6 as of September 2026., 1.9 years above the national average of 45.7. Among its districts, Gangseo-gu is youngest at 40.2 and Yeongdo-gu oldest at 53.
It fell 3.1% over 4 years, from 3,331,444 in 2022 to 3,229,467 in September 2026.
As of August 2026, the most people moved in from Gyeongsangnam-do (3,065) and the most moved out to Gyeongsangnam-do (2,950). Outflows exceeded inflows in 11 of the past 12 months, for a net loss of 9,338.
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 🌐