Gyeongcheonseom Island & Sangju Weir, Jungdong-myeon, Sangju-si
Total population88,920people
Households48,832households
Average age54.6yrs
Sex ratioMale44,047peopleFemale44,873people49.5%50.5%

Population change

Change over time

4-year trend

Unit: people

95,305 in 202294,254 in 202392,579 in 202490,520 in 202588,920 in 202620222023202420252026

95,305 in 202288,920 in 2026

Down 6.7% over the past 4 years.

Migration

As of August 2026

Monthly Overview

Moved in477people
Moved out557people
Net migrationβˆ’80people

Net migration by month

Unit: people

βˆ’43βˆ’98βˆ’97βˆ’3911βˆ’9872βˆ’28βˆ’3βˆ’68βˆ’90βˆ’80SepOctNovDecJanFebMarAprMayJunJulAugβˆ’43 in Sep 2025βˆ’98 in Oct 2025βˆ’97 in Nov 2025βˆ’39 in Dec 202511 in Jan 2026βˆ’98 in Feb 202672 in Mar 2026βˆ’28 in Apr 2026βˆ’3 in May 2026βˆ’68 in Jun 2026βˆ’90 in Jul 2026βˆ’80 in Aug 2026

Net inflowNet outflow

Top origins

Unit: people

Top destinations

Unit: people

Outflows exceeded inflows in 10 of the past 12 months, for a net loss of 561.

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

Population structure

Population by age

As of September 2026

Population by age and sex

Unit: people

Under 1010s20s30s40s50sπŸ‘‘ 60s70s80s90s100+1,6773,6483,2723,1694,7717,53310,1116,7042,73042751,5593,1122,3882,6464,1516,6589,5447,7225,5921,45841

Male 44,047Female 44,873

Age structure

Unit: %

Youth 7.4%Working age 53.8%Seniors 38.8%53.8%38.8%

Youth 7.4%Working age 53.8%Seniors 38.8%

60s is the largest group, at 19,655 people.

Population ranking

Population by region

As of September 2026
  • YoungestGajang-dong33.9 yrs
  • OldestYangchon-dong65.1 yrs
RegionShare
Muyang-dong7,0157.9%44.6 yrs
Naengnim-dong6,6557.5%45.4 yrs
Nagyang-dong6,3047.1%46 yrs
Sinbong-dong6,0816.8%46.3 yrs
Hamchang-eup5,8716.6%56.9 yrs
Bongnyong-dong4,1094.6%46.7 yrs
Gongseong-myeon3,6524.1%61.4 yrs
Nakdong-myeon3,6084.1%62.9 yrs
Sabeolguk-myeon3,5624%61.6 yrs
Namseong-dong3,0713.5%51.2 yrs

The top three areas hold 22.5% of the population of Sangju-si, Gyeongsangbuk-do.

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

Frequently asked questions❓

Sangju-si, Gyeongsangbuk-do has 88,920 residents as of September 2026., 1,600 fewer than a year earlier.
Muyang-dong, home to 7,015 residents (7.9% of Sangju-si, Gyeongsangbuk-do).
It is 54.6 as of September 2026., 8.9 years above the national average of 45.7. Among its neighborhoods, Gajang-dong is youngest at 33.9 and Yangchon-dong oldest at 65.1.
It fell 6.7% over 4 years, from 95,305 in 2022 to 88,920 in September 2026.
As of August 2026, the most people moved in from Gumi-si (26) and the most moved out to Gumi-si (40). Outflows exceeded inflows in 10 of the past 12 months, for a net loss of 561.
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 🌐