Okjeong Lake Park, Okjeong-dong, Yangju-siGisan Reservoir, Baekseok-eup, Yangju-siDeokgye Station, Deokgye-dong, Yangju-siDeokjeong Station, Deokjeong-dong, Yangju-siSongchu Valley Resort, Jangheung-myeon, Yangju-siYangju Station & Yangju City Hall, Nambang-dong, Yangju-si
Total population297,605people
Households133,645households
Average age43.9yrs
Sex ratioMale149,409peopleFemale148,196people50.2%49.8%

Population change

Change over time

4-year trend

Unit: people

238,734 in 2022262,328 in 2023284,421 in 2024294,082 in 2025297,605 in 202620222023202420252026

238,734 in 2022297,605 in 2026

Up 24.7% over the past 4 years.

Migration

As of August 2026

Monthly Overview

Moved in2,468people
Moved out2,204people
Net migration264people

Net migration by month

Unit: people

704463560496242281657145249117264SepOctNovDecJanFebMarAprMayJunJulAug704 in Sep 2025463 in Oct 2025560 in Nov 2025496 in Dec 2025242 in Jan 2026281 in Feb 202665 in Mar 202671 in Apr 202645 in May 2026249 in Jun 2026117 in Jul 2026264 in Aug 2026

Net inflowNet outflow

Top origins

Unit: people

Top destinations

Unit: people

Inflows exceeded outflows in every one of the past 12 months, for a net gain of 3,557.

Want more detail on migration in Yangju-si?See more Yangju-si statistics on GData

Population structure

Population by age

As of September 2026

Population by age and sex

Unit: people

Under 1010s20s30s40sπŸ‘‘ 50s60s70s80s90s100+11,34814,71515,77920,65023,90525,52121,48811,0934,3765241010,77614,53614,31019,46922,57424,81820,92512,5436,7661,43741

Male 149,409Female 148,196

Age structure

Unit: %

Youth 12.3%Working age 68.2%Seniors 19.5%12.3%68.2%19.5%

Youth 12.3%Working age 68.2%Seniors 19.5%

50s is the largest group, at 50,339 people.

Population ranking

Population by region

As of September 2026
  • YoungestOkjeong-dong37.4 yrs
  • OldestNambang-dong60.9 yrs
RegionShare
Okjeong-dong100,75333.9%37.4 yrs
Deokgye-dong40,17913.5%42.5 yrs
Baekseok-eup25,5118.6%50.6 yrs
Samsung-dong21,1817.1%44.7 yrs
Deokjeong-dong18,7706.3%44.5 yrs
Goam-dong15,5105.2%46.3 yrs
Jangheung-myeon13,5994.6%53.5 yrs
Gwangsa-dong11,3203.8%44 yrs
Gwangjeok-myeon10,3273.5%52.7 yrs
Goeup-dong8,3482.8%43.2 yrs

The top three areas hold 55.9% of the population of Yangju-si, Gyeonggi.

Want to explore Yangju-si's demographics in more detail?See more Yangju-si statistics on GData

Frequently asked questions❓

Yangju-si, Gyeonggi has 297,605 residents as of September 2026., 3,523 more than a year earlier.
Okjeong-dong, home to 100,753 residents (33.9% of Yangju-si, Gyeonggi).
It is 43.9 as of September 2026., 1.8 years below the national average of 45.7. Among its neighborhoods, Okjeong-dong is youngest at 37.4 and Nambang-dong oldest at 60.9.
It rose 24.7% over 4 years, from 238,734 in 2022 to 297,605 in September 2026.
As of August 2026, the most people moved in from Uijeongbu-si (288) and the most moved out to Uijeongbu-si (198). Inflows exceeded outflows in every one of the past 12 months, for a net gain of 3,557.
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 🌐