KOR2OOL.
ENKO
KOREA, IN NUMBERS Population

Cheonan Population

Monthly resident registration population · KOSIS

MonthlyLatest available: Aug 2026

Current population

666,584

Data period: Aug 2026

YoY change

+0.55%

+3,625 people · Year-over-year

Annual Local Government Budget

KRW 2.49 trillion

≈ US$1.83 billion

Fiscal year 2026 · Initial budget

General and special accounts · Excludes funds

View exact KRW amount

KRW 2,490,000,000,000

FX reference date: · ECB · Reference conversion

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

Population rank within South Chungcheong#115 cities and counties
Share of parent population31.16%South Chungcheong
Share of national population1.30%Aug 2026

5-year monthly trend

Cheonan · people

Population
Aug 2026666,584 people

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

Cheonan · 5-year monthly trend668,743664,965661,188657,410653,632Sep 2021Apr 2023Dec 2024Aug 2026
View monthly data
Cheonan · 5-year monthly trend
Data periodPopulation
Aug 2026666,584
Jul 2026666,442
Jun 2026666,182
May 2026665,858
Apr 2026665,391
Mar 2026665,080
Feb 2026664,746
Jan 2026664,269
Dec 2025664,322
Nov 2025664,186
Oct 2025663,858
Sep 2025663,595
Aug 2025662,959
Jul 2025662,677
Jun 2025661,967
May 2025661,615
Apr 2025661,153
Mar 2025660,888
Feb 2025660,981
Jan 2025660,147
Dec 2024659,920
Nov 2024659,800
Oct 2024659,286
Sep 2024658,831
Aug 2024658,731
Jul 2024658,537
Jun 2024658,320
May 2024658,266
Apr 2024657,633
Mar 2024657,089
Feb 2024656,478
Jan 2024655,791
Dec 2023655,959
Nov 2023656,583
Oct 2023657,326
Sep 2023657,594
Aug 2023657,839
Jul 2023658,694
Jun 2023658,932
May 2023658,213
Apr 2023657,984
Mar 2023657,816
Feb 2023657,417
Jan 2023656,955
Dec 2022657,559
Nov 2022657,821
Oct 2022657,701
Sep 2022657,210
Aug 2022657,612
Jul 2022657,418
Jun 2022657,214
May 2022657,241
Apr 2022657,080
Mar 2022656,702
Feb 2022656,925
Jan 2022658,150
Dec 2021658,486
Nov 2021658,465
Oct 2021658,107
Sep 2021657,703
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

GongjuBoryeongAsanSeosan