KOR2OOL.
ENKO
KOREA, IN NUMBERS Population

Seosan Population

Monthly resident registration population · KOSIS

MonthlyLatest available: Aug 2026

Current population

170,780

Data period: Aug 2026

YoY change

-1.26%

-2,182 people · Year-over-year

Annual Local Government Budget

KRW 1.31 trillion

≈ US$959.96 million

Fiscal year 2026 · Initial budget

General and special accounts · Excludes funds

View exact KRW amount

KRW 1,306,764,779,000

FX reference date: · ECB · Reference conversion

Source: Ministry of the Interior and Safety · Local Finance 365

Population rank within South Chungcheong#415 cities and counties
Share of parent population7.98%South Chungcheong
Share of national population0.33%Aug 2026

5-year monthly trend

Seosan · people

Population
Aug 2026170,780 people

Monthly resident registration population. Use the month control to inspect each value, or open the data table.

Seosan · 5-year monthly trend177,818175,765173,713171,660169,607Sep 2021Apr 2023Dec 2024Aug 2026
View monthly data
Seosan · 5-year monthly trend
Data periodPopulation
Aug 2026170,780
Jul 2026171,093
Jun 2026171,136
May 2026171,306
Apr 2026171,393
Mar 2026171,556
Feb 2026171,893
Jan 2026172,297
Dec 2025172,438
Nov 2025172,564
Oct 2025172,752
Sep 2025172,903
Aug 2025172,962
Jul 2025173,017
Jun 2025173,253
May 2025173,337
Apr 2025173,450
Mar 2025173,522
Feb 2025173,621
Jan 2025174,139
Dec 2024174,445
Nov 2024174,656
Oct 2024174,834
Sep 2024175,144
Aug 2024175,334
Jul 2024175,494
Jun 2024175,657
May 2024175,660
Apr 2024175,646
Mar 2024175,650
Feb 2024175,750
Jan 2024175,894
Dec 2023176,011
Nov 2023176,079
Oct 2023176,052
Sep 2023176,051
Aug 2023176,125
Jul 2023176,162
Jun 2023176,174
May 2023176,085
Apr 2023176,110
Mar 2023176,150
Feb 2023176,189
Jan 2023176,341
Dec 2022176,413
Nov 2022176,440
Oct 2022176,312
Sep 2022176,291
Aug 2022176,512
Jul 2022176,477
Jun 2022176,416
May 2022176,407
Apr 2022176,435
Mar 2022176,452
Feb 2022176,559
Jan 2022176,630
Dec 2021176,645
Nov 2021176,610
Oct 2021176,595
Sep 2021176,491
Definition

This population series is based on South Korea's resident registration statistics. Foreign residents are not included in this dataset.

Methodology
Source: KOSIS ↗ · Monthly resident registration populationLast updated: Sep 29, 2026

Other cities and counties in South Chungcheong

NonsanGyeryongDangjinGeumsan