Coastal flooding - Cities and FUAs — Built-up area exposure to in Philadelphia (Greater)
Philadelphia (Greater): Coastal flooding - Cities and FUAs — Built-up area exposure to was 0.727 Percentage of built-up area in 2022. ▬ Flat
Coastal flooding - Cities and FUAs — Built-up area exposure to in Philadelphia (Greater), 2000–2022
Source: Organisation for Economic Co-operation and Development. Measured in Percentage of built-up area.
Analysis
Philadelphia (Greater) recorded 0.727 Percentage of built-up area for coastal flooding - cities and fuas — built-up area exposure to in 2022.
The figure is down 0.3% on the previous year and up 0.9% over ten years.
Over the whole period, coastal flooding - cities and fuas — built-up area exposure to in Philadelphia (Greater) peaked at 0.7442 Percentage of built-up area in 2000 and was at its lowest, 0.6997 Percentage of built-up area, in 2015.
Philadelphia (Greater) ranks 120th of 1315 regions on this measure, in the top 10%.
Coastal flooding - Cities and FUAs — Built-up area exposure to in Philadelphia (Greater), year by year
| Year | Percentage of built-up area | Change |
|---|---|---|
| 2000 | 0.7442 Percentage of built-up area | — |
| 2001 | 0.7406 Percentage of built-up area | -0.5% |
| 2002 | 0.7295 Percentage of built-up area | -1.5% |
| 2003 | 0.7236 Percentage of built-up area | -0.8% |
| 2004 | 0.7203 Percentage of built-up area | -0.4% |
| 2005 | 0.7111 Percentage of built-up area | -1.3% |
| 2006 | 0.7022 Percentage of built-up area | -1.3% |
| 2007 | 0.7151 Percentage of built-up area | +1.8% |
| 2008 | 0.7142 Percentage of built-up area | -0.1% |
| 2009 | 0.7131 Percentage of built-up area | -0.2% |
| 2010 | 0.7152 Percentage of built-up area | +0.3% |
| 2011 | 0.7189 Percentage of built-up area | +0.5% |
| 2012 | 0.7205 Percentage of built-up area | +0.2% |
| 2013 | 0.7129 Percentage of built-up area | -1.1% |
| 2014 | 0.7044 Percentage of built-up area | -1.2% |
| 2015 | 0.6997 Percentage of built-up area | -0.7% |
| 2016 | 0.7116 Percentage of built-up area | +1.7% |
| 2017 | 0.7319 Percentage of built-up area | +2.8% |
| 2018 | 0.736 Percentage of built-up area | +0.6% |
| 2019 | 0.7348 Percentage of built-up area | -0.2% |
| 2020 | 0.7348 Percentage of built-up area | +0.0% |
| 2021 | 0.7291 Percentage of built-up area | -0.8% |
| 2022 | 0.727 Percentage of built-up area | -0.3% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 0.7214 Percentage of built-up area | 0.7022 Percentage of built-up area | 0.7442 Percentage of built-up area | 10 |
| 2010s | 0.7186 Percentage of built-up area | 0.6997 Percentage of built-up area | 0.736 Percentage of built-up area | 10 |
| 2020s | 0.7303 Percentage of built-up area | 0.727 Percentage of built-up area | 0.7348 Percentage of built-up area | 3 |
More reference data data for Philadelphia (Greater)
- Cooling and heating degree days - Cities and FUAs — Cooling degree 221.54 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -80.09 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs 1,927 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -101.67 Degree days (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 13.67 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation -0.4347 Days per year (2024)
- Dependency ratio - Cities and FUAs 26.6 Percentage of population aged 15-64 years (2024)
- Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area (2023)
- Main mode of transport to work - Cities and FUAs — Employed persons 1.65 million Persons (2023)
- Internet speed - Cities and FUAs — Downloading speed -1.1 Percentage of national value (2025)
Frequently asked questions
- What is coastal flooding - cities and fuas — built-up area exposure to in Philadelphia (Greater)?
- Coastal flooding - cities and fuas — built-up area exposure to in Philadelphia (Greater) was 0.727 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 Philadelphia (Greater)?
- The highest recorded value was 0.7442 Percentage of built-up area in 2000.
- What is the lowest coastal flooding - cities and fuas — built-up area exposure to recorded in Philadelphia (Greater)?
- The lowest recorded value was 0.6997 Percentage of built-up area in 2015.
- How does Philadelphia (Greater) rank for coastal flooding - cities and fuas — built-up area exposure to?
- Philadelphia (Greater) ranks 120th out of 1315 regions with data for 2022.
- Is coastal flooding - cities and fuas — built-up area exposure to rising or falling in Philadelphia (Greater)?
- Over the last ten years it is up 0.9%. The long-run trend across the full record is flat.
- Where does this Philadelphia (Greater) 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