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Population of Jecheon-si, Chungcheongbuk-do

As of September 2026

Total population127,898people
Households67,127households
Average age49.7yrs
Sex ratioMale64,565peopleFemale63,333people50.5%49.5%

Population change

Change over time

4-year trend

Unit: people

131,693 in 2022130,858 in 2023129,175 in 2024128,032 in 2025127,898 in 202620222023202420252026

131,693 in 2022127,898 in 2026

Down 2.9% over the past 4 years.

Migration

As of August 2026

Monthly Overview

Moved in973people
Moved out1,036people
Net migrationβˆ’63people

Net migration by month

Unit: people

9415799βˆ’75βˆ’139βˆ’101676161βˆ’10βˆ’45βˆ’70βˆ’63SepOctNovDecJanFebMarAprMayJunJulAug94 in Sep 2025157 in Oct 202599 in Nov 2025βˆ’75 in Dec 2025βˆ’139 in Jan 2026βˆ’101 in Feb 2026676 in Mar 2026161 in Apr 2026βˆ’10 in May 2026βˆ’45 in Jun 2026βˆ’70 in Jul 2026βˆ’63 in Aug 2026

Net inflowNet outflow

Top origins

Unit: people

RegionMoved in
Danyang-gun40
Wonju-si, Gangwon27
Chungju-si23
Yeongwol-gun, Gangwon22
Cheongju-si20

Top destinations

Unit: people

RegionMoved out
Cheongju-si44
Wonju-si, Gangwon38
Chungju-si28
Danyang-gun18
Yeongwol-gun, Gangwon13

Net migration varied across the past 12 months, totaling +684.

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

Population structure

Population by age

As of September 2026

Population by age and sex

Unit: people

Under 1010s20s30s40s50sπŸ‘‘ 60s70s80s90s100+3,0405,5566,9716,2867,75311,28112,7847,6622,91831222,7585,2585,5765,0657,12110,72512,6728,2654,8461,01433

Male 64,565Female 63,333

Age structure

Unit: %

Youth 8.8%Working age 61.7%Seniors 29.5%61.7%29.5%

Youth 8.8%Working age 61.7%Seniors 29.5%

60s is the largest group, at 25,456 people.

Population ranking

Population by region

As of September 2026
  • YoungestSinwol-dong37 yrs
  • OldestMyeongji-dong64.6 yrs
RegionShare
Jangnak-dong18,39414.4%42.7 yrs
Cheongjeon-dong13,97110.9%53.2 yrs
Haso-dong10,5078.2%48.6 yrs
Goam-dong7,8776.2%46.7 yrs
Gangje-dong7,7566.1%41 yrs
Sinbaek-dong7,5005.9%47.7 yrs
Sinwol-dong6,5175.1%37 yrs
Bongyang-eup6,4155%59 yrs
Hwasan-dong5,5164.3%51.8 yrs
Yeongcheon-dong5,0083.9%51 yrs

The top three areas hold 33.5% of the population of Jecheon-si, Chungcheongbuk-do.

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

Frequently asked questions❓

Jecheon-si, Chungcheongbuk-do has 127,898 residents as of September 2026., 134 fewer than a year earlier.
Jangnak-dong, home to 18,394 residents (14.4% of Jecheon-si, Chungcheongbuk-do).
It is 49.7 as of September 2026., 4 years above the national average of 45.7. Among its neighborhoods, Sinwol-dong is youngest at 37 and Myeongji-dong oldest at 64.6.
It fell 2.9% over 4 years, from 131,693 in 2022 to 127,898 in September 2026.
As of August 2026, the most people moved in from Danyang-gun (40) and the most moved out to Cheongju-si (44). Net migration varied across the past 12 months, totaling +684.
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 🌐