KOR2OOL.
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KOREA, IN NUMBERS Population

Seongnam Population

Monthly resident registration population · KOSIS

MonthlyLatest available: Aug 2026

Current population

899,806

Data period: Aug 2026

YoY change

-0.85%

-7,720 people · Year-over-year

Annual Local Government Budget

KRW 3.94 trillion

≈ US$2.89 billion

Fiscal year 2026 · Initial budget

General and special accounts · Excludes funds

View exact KRW amount

KRW 3,940,847,350,000

FX reference date: · ECB · Reference conversion

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

Population rank within Gyeonggi#531 cities and counties
Share of parent population6.53%Gyeonggi
Share of national population1.76%Aug 2026

5-year monthly trend

Seongnam · people

Population
Aug 2026899,806 people

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

Seongnam · 5-year monthly trend938,151926,967915,783904,599893,415Sep 2021Apr 2023Dec 2024Aug 2026
View monthly data
Seongnam · 5-year monthly trend
Data periodPopulation
Aug 2026899,806
Jul 2026901,110
Jun 2026902,344
May 2026903,747
Apr 2026904,576
Mar 2026905,493
Feb 2026906,201
Jan 2026906,160
Dec 2025905,794
Nov 2025906,177
Oct 2025906,754
Sep 2025907,068
Aug 2025907,526
Jul 2025908,464
Jun 2025909,210
May 2025909,790
Apr 2025910,260
Mar 2025910,941
Feb 2025911,807
Jan 2025912,708
Dec 2024913,009
Nov 2024913,781
Oct 2024914,234
Sep 2024914,832
Aug 2024915,871
Jul 2024916,615
Jun 2024917,192
May 2024917,765
Apr 2024918,706
Mar 2024919,464
Feb 2024919,855
Jan 2024919,856
Dec 2023919,747
Nov 2023918,771
Oct 2023917,243
Sep 2023917,374
Aug 2023918,077
Jul 2023919,771
Jun 2023921,434
May 2023922,914
Apr 2023923,344
Mar 2023923,416
Feb 2023924,051
Jan 2023924,087
Dec 2022922,518
Nov 2022920,362
Oct 2022920,667
Sep 2022920,903
Aug 2022924,333
Jul 2022925,981
Jun 2022926,645
May 2022927,340
Apr 2022928,267
Mar 2022929,463
Feb 2022930,731
Jan 2022931,072
Dec 2021930,948
Nov 2021931,063
Oct 2021931,319
Sep 2021931,760
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 Gyeonggi

UijeongbuAnyangBucheonGwangmyeong