Federal Emergency Management Agency

Flood insurance can be hard to understand, but this dataset pulls back the curtain. It shows every NFIP policy sold across the country since 2009, where they are, how much people pay, and how much coverage they have. You can see which neighborhoods are in flood zones, how many people actually buy insurance in high-risk areas, and whether premiums have changed over time. If you're curious whether your area is heavily insured, what flood zone your street is in, or how flood insurance varies by state, this data has the answers.

Every time someone files a claim with flood insurance, FEMA records what happened. This dataset is that record book going back 50+ years. You can see where floods hit hardest, how much damage they caused, what got paid out, and details about the buildings that flooded, like how old they were or whether they were built to modern flood standards. It's anonymized so you can't identify specific people, but you can spot patterns about which areas flood repeatedly, which types of buildings suffer more damage, and how much the program pays out.

Flooding causes massive property damage, and some homes and businesses get hit repeatedly. FEMA tracks which structures have suffered two or more insured flood losses through their national flood insurance program. This dataset names those problem properties, shows how much they've lost over time, and flags which ones FEMA has helped fix or which no longer have coverage. It's useful for identifying neighborhoods with chronic flooding trouble and measuring whether fixes actually work.

When a governor requests federal help after a disaster, FEMA issues a declaration. This dataset logs every one of those declarations going back to 1953. You can see what kinds of disasters trigger federal declarations, which states and counties get hit hardest, and how disaster frequency has changed over decades. It's the official record of where the federal government stepped in to help.

This data shows what percentage of homes in your county are insured through the federal flood insurance program. You get two numbers for each county: one for all houses, and one specifically for homes in flood-prone zones that FEMA has flagged as high-risk. It's useful if you want to understand flood insurance adoption, compare protection levels across regions, or see which areas have higher or lower insurance take-up. The data gets updated every three months, but FEMA only keeps the most recent snapshot, so you won't find historical trends in this particular dataset.