Iselin’s biggest natural hazard is inland flooding
Most of the natural-hazard damage FEMA expects in Iselin comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 28 claims here since 1978.
What stands out about Iselin’s weather risks
Read from FEMA’s records below. The page puts what stands out first.
How exposed is Iselin?
FEMA expects yearly storm and flood damage to homes and buildings here to be higher than in 59% of U.S. communities, mostly from inland flooding.
Rated higher than 343 of the 564 New Jersey towns we cover.
Iselin covers 3 census tracts, combined by population.
What Iselin faces
Each hazard’s share of the damage FEMA expects here, and how it compares with the rest of the country.
Inland flooding
Does Iselin flood? Sometimes: 28 flood claims since 1978
Every paid claim on a federal flood insurance policy in Iselin, from FEMA’s records.
- Hurricane Ida6 claims · $227K
- Hurricane Irene5 claims · $54K
- The April 2007 nor’easter2 claims · $3K
Iselin isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Middlesex County.Federal disasters declared here
None of the disasters declared for Middlesex County shows FEMA aid or repair money reaching Iselin itself in FEMA’s records.
Middlesex County has had 23 natural disasters declared since 1953, most often hurricanes and severe storms.
Get ready for what Iselin actually faces
A short kit for its top hazards, what to check before you buy, and where neighbors get alerts.
- Turn around at flooded roads: a foot of moving water can carry off a car.
- Flood insurance usually takes 30 days to start, so buy it before the forecast.
- Keep papers and medicines up high, in a grab-and-go bag.
- Keep a shovel, a blanket and snacks in the car.
- Clear snow from furnace and dryer vents.
- Check on older neighbors when the power goes out.
- Trim dead limbs over the house and driveway.
- Tie down trash cans and outdoor furniture.
- Stay clear of downed lines and call the utility.
- Look up the address on FEMA’s flood map.
- Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
- Get a flood insurance quote early: policies usually start 30 days after you buy.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Iselin and its neighbors
Iselin has the highest rating of the 3 towns around it. Tap a town to see its hazards.
| Town | Rating | Mostly | Flood claims |
|---|---|---|---|
| Iselin | Moderate | inland flooding | 28 |
| Edison | Moderate | inland flooding | 154 |
| Woodbridge | Low | inland flooding | 597 |
Rating = expected yearly storm and flood damage as a share of what’s there, vs. U.S. communities. Flood claims = paid federal flood insurance claims on record.
Most disasters here begin in August–October
The month each of Middlesex County’s 23 declared disasters began, since 1953.
What these numbers can and can’t tell you
- An average, not a forecast. FEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.
- Compared by rate. “Higher than N%” compares yearly damage as a share of what’s there, so a big city isn’t rated riskier just for having more buildings.
- Money that reached town. Flood claims are matched to Iselin’s own flood-insurance community (here, the census tracts inside it); household aid to the registrant’s city; repair grants to Iselin.
- It follows property value. FEMA’s model weighs damage to buildings, so a place that recently lost many homes can rate lower than it feels. Across Iselin, expected losses total about $4.6M a year, counting buildings, people and crops.
Storm stories
Memories, warnings and help from neighbors in Iselin.
Your answer becomes a post in Town Square.
Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau. Preparedness tips: Ready.gov. An average of past damage, not a forecast.