Coastal flooding - Cities and FUAs — Built-up area exposure to in Seoul
Seoul: Coastal flooding - Cities and FUAs — Built-up area exposure to was 0.8968 Percentage of built-up area in 2022. ◆ Volatile
Coastal flooding - Cities and FUAs — Built-up area exposure to in Seoul, 2000–2022
Source: Organisation for Economic Co-operation and Development. Measured in Percentage of built-up area.
Analysis
Seoul recorded 0.8968 Percentage of built-up area for coastal flooding - cities and fuas — built-up area exposure to in 2022.
The figure is down 2.3% on the previous year and up 278.3% over ten years.
Over the whole period, coastal flooding - cities and fuas — built-up area exposure to in Seoul peaked at 0.9188 Percentage of built-up area in 2019 and was at its lowest, 0.1617 Percentage of built-up area, in 2008.
That places Seoul 112th out of 1315 regions with data for 2022, putting it in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Coastal flooding - Cities and FUAs — Built-up area exposure to in Seoul, year by year
| Year | Percentage of built-up area | Change |
|---|---|---|
| 2000 | 0.175 Percentage of built-up area | — |
| 2001 | 0.175 Percentage of built-up area | +0.0% |
| 2002 | 0.175 Percentage of built-up area | +0.0% |
| 2003 | 0.175 Percentage of built-up area | +0.0% |
| 2004 | 0.175 Percentage of built-up area | +0.0% |
| 2005 | 0.1748 Percentage of built-up area | -0.1% |
| 2006 | 0.1698 Percentage of built-up area | -2.9% |
| 2007 | 0.1636 Percentage of built-up area | -3.6% |
| 2008 | 0.1617 Percentage of built-up area | -1.2% |
| 2009 | 0.1878 Percentage of built-up area | +16.1% |
| 2010 | 0.196 Percentage of built-up area | +4.4% |
| 2011 | 0.2123 Percentage of built-up area | +8.3% |
| 2012 | 0.2371 Percentage of built-up area | +11.7% |
| 2013 | 0.3522 Percentage of built-up area | +48.6% |
| 2014 | 0.454 Percentage of built-up area | +28.9% |
| 2015 | 0.4729 Percentage of built-up area | +4.2% |
| 2016 | 0.4726 Percentage of built-up area | -0.1% |
| 2017 | 0.6095 Percentage of built-up area | +29.0% |
| 2018 | 0.8435 Percentage of built-up area | +38.4% |
| 2019 | 0.9188 Percentage of built-up area | +8.9% |
| 2020 | 0.9188 Percentage of built-up area | +0.0% |
| 2021 | 0.9183 Percentage of built-up area | -0.1% |
| 2022 | 0.8968 Percentage of built-up area | -2.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 0.1733 Percentage of built-up area | 0.1617 Percentage of built-up area | 0.1878 Percentage of built-up area | 10 |
| 2010s | 0.4769 Percentage of built-up area | 0.196 Percentage of built-up area | 0.9188 Percentage of built-up area | 10 |
| 2020s | 0.9113 Percentage of built-up area | 0.8968 Percentage of built-up area | 0.9188 Percentage of built-up area | 3 |
More reference data data for Seoul
- Cooling and heating degree days - Cities and FUAs — Cooling degree 316.09 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling 99.03 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs 2,184 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -237.37 Degree days (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 15.72 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation -2.52 Days per year (2024)
- Dependency ratio - Cities and FUAs 23.2 Percentage of population aged 15-64 years (2023)
- Wind threats - Cities and FUAs — Exposure to wind threats 9.58 Percentage of area (2023)
- Internet speed - Cities and FUAs — Downloading speed 3.2 Percentage of national value (2025)
- Internet speed - Cities and FUAs — Uploading speed 2.6 Percentage of national value (2025)
Frequently asked questions
- What is coastal flooding - cities and fuas — built-up area exposure to in Seoul?
- Coastal flooding - cities and fuas — built-up area exposure to in Seoul was 0.8968 Percentage of built-up area in 2022, according to Organisation for Economic Co-operation and Development.
- What is the highest coastal flooding - cities and fuas — built-up area exposure to recorded in Seoul?
- The highest recorded value was 0.9188 Percentage of built-up area in 2019.
- What is the lowest coastal flooding - cities and fuas — built-up area exposure to recorded in Seoul?
- The lowest recorded value was 0.1617 Percentage of built-up area in 2008.
- How does Seoul rank for coastal flooding - cities and fuas — built-up area exposure to?
- Seoul ranks 112th out of 1315 regions with data for 2022.
- Is coastal flooding - cities and fuas — built-up area exposure to rising or falling in Seoul?
- Over the last ten years it is up 278.3%. The long-run trend across the full record is volatile.
- Where does this Seoul data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Coastal flooding - Cities and FUAs — Built-up area exposure to coastal flooding. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 23 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This dataset provides indicators of population and built-up exposure to coastal floods. Data sources and methodology Coastal flooding indicators are estimated using the Global coastal flood hazard maps (Muis, S. et al., 2016). This dataset provides the extent of coastal floods for different return periods (10 to 100 years) with a 1-kilometre resolution. A return period corresponds to the estimated time interval between floods of similar intensity. Built-up area exposure to coastal floods is computed by intersecting this map with Copernius annual land cover data (Copernicus Climate Change Service, Climate Data Store, 2019) and population exposure is computed using the Global Human Settlement Population layer (European Commission, GHSL Data Package 2023). Harmonised international hazard models are used to ensure global comparability, consistent modelling assumptions across countries, and complete subnational coverage. These estimates may differ from official subnational flood risk statistics due to differences in methodological approaches - such as the use of global, modelled top down hazard maps versus national hydrological models or administrative flood zone delineations - as well as variations in input data sources, spatial resolution, and hydraulic modelling techniques. Defining FUAs and cities The OECD, in cooperation with the EU, has developed a harmonised definition of functional urban areas (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns (OECD, 2012). FUAs consist of: A city – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city. A commuting zone – including all local areas where at least 15% of employed residents work in the city. The delineation process includes: Assigning municipalities surrounded by a single FUA to that FUA. Excluding non-contiguous municipalities. The correspondence table between SAUs and FUAs/cities is available in parquet and csv format. The definition identifies 1 272 FUAs and 1 269 cities in all OECD member countries except Costa Rica and three accession countries. Cite this dataset OECD Regions, cities and local areas database (Coastal flooding - Cities and FUAs), http://oe.cd/geostats Further information OECD Local Data Portal OECD Regions and Cities at a Glance For questions and/or comments, please email CitiesStat@oecd.org