KOR2OOL.
ENKO
KOREA, IN NUMBERS Population

Sejong Population

Monthly resident registration population · KOSIS

MonthlyLatest available: Aug 2026

Current population

390,738

Data period: Aug 2026

YoY change

-0.32%

-1,246 people · Year-over-year

Annual Local Government Budget

KRW 2.08 trillion

≈ US$1.53 billion

Fiscal year 2026 · Initial budget

General and special accounts · Excludes funds

View exact KRW amount

KRW 2,082,877,628,000

FX reference date: · ECB · Reference conversion

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

Rank#16of 16 active regions
Share of national population0.76%Aug 2026

5-year monthly trend

Sejong · people

Population
Aug 2026390,738 people

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

Sejong · 5-year monthly trend397,682388,605379,528370,450361,373Sep 2021Apr 2023Dec 2024Aug 2026
View monthly data
Sejong · 5-year monthly trend
Data periodPopulation
Aug 2026390,738
Jul 2026390,972
Jun 2026390,923
May 2026391,064
Apr 2026391,024
Mar 2026391,072
Feb 2026391,240
Jan 2026391,477
Dec 2025391,965
Nov 2025392,495
Oct 2025392,406
Sep 2025392,230
Aug 2025391,984
Jul 2025392,154
Jun 2025392,223
May 2025392,211
Apr 2025391,992
Mar 2025391,812
Feb 2025391,669
Jan 2025390,910
Dec 2024390,685
Nov 2024390,603
Oct 2024389,978
Sep 2024389,443
Aug 2024389,370
Jul 2024388,788
Jun 2024387,940
May 2024387,774
Apr 2024387,726
Mar 2024387,411
Feb 2024387,193
Jan 2024386,944
Dec 2023386,525
Nov 2023386,256
Oct 2023386,079
Sep 2023385,932
Aug 2023385,953
Jul 2023386,192
Jun 2023386,126
May 2023386,050
Apr 2023385,825
Mar 2023385,609
Feb 2023385,285
Jan 2023384,496
Dec 2022383,591
Nov 2022382,770
Oct 2022382,258
Sep 2022381,925
Aug 2022381,439
Jul 2022380,889
Jun 2022380,215
May 2022379,340
Apr 2022378,196
Mar 2022377,296
Feb 2022376,399
Jan 2022374,377
Dec 2021371,895
Nov 2021369,465
Oct 2021368,276
Sep 2021366,560
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

Related regions

GyeonggiGangwonNorth ChungcheongSouth Chungcheong