NFIP Residential Penetration Rates
NFIP "take-up rates" or residential penetration rates are an estimate of the percentage of total residential structures covered by an NFIP policy. The NFIP residential penetration rate within an area, such as a county, is the ratio of insured residential structures to total residential structures in that area. Private flood insurance take-up rates are not available to FEMA and therefore, are not included in these estimates. This data can be used for various planning purposes to evaluate community resilience and residual flood risk, help states better understand areas vulnerable to flooding and provide guidance for flood insurance marketing. FEMA derives the number of total residential structures from the 2019 National Structure Inventory (NSI) 2022.
Data in this report pertains to RESIDENTIAL properties only.
Incompleteness of NSI 2022 in some counties and communities can lead to the tables showing lower than actual numbers of total residential building stock and inflate the penetration rate, sometimes over 100%.
FEMA's terms and conditions and citation requirements for datasets (API usage or file downloads) can be found on the OpenFEMA Terms and Conditions page: https://www.fema.gov/about/openfema/terms-conditions.
For answers to Frequently Asked Questions (FAQs) about the OpenFEMA program, API, and publicly available datasets, please visit: https://www.fema.gov/about/openfema/faq.
If you have media inquiries about this dataset, please email the FEMA Press Office at FEMA-Press-Office@fema.dhs.gov. For inquiries about FEMA's data and Open Government program, please email the OpenFEMA team at OpenFEMA@fema.dhs.gov .
Request
- Base URLhttps://www.fema.gov/api/open
- Authnone declared
- TypeScriptA function with typed inputs. Its response is checked against the schema.
Query parameters
Applies filter criteria to constrain the results.
The number of items to return in the result set.
The number of items to skip over before returning results.
Option to specify if a total entity count should be returned with the query. NOTE: previously this parameter was called $inlinecount and it accepted the values of 'none' and 'allpages'. The $inlinecount parameter is DEPRECATED. It will continue to work for a few months at which time it will be removed.
The name of the file to be downloaded.
Indicate whether to return metadata object with a data set
Indicates gzip status
Sort the returned data.
Controls which fields will be returned in the results.
The format of the data to be returned.
Response
OK
Changes
No recorded changes to this operation across all 1 revision of this API.