Photo: Kbh3rd · CC BY 4.0On FEMA’s figures, Trenton faces about as much hazard damage per building as the typical U.S. town, mostly from river and rain flooding
On FEMA’s National Risk Index, Trenton gets a B− for hazard risk: higher expected damage per building than 50% of U.S. towns, #88 of 247 in Missouri. Most of that expected damage is river and rain flooding (74%), then tornadoes (16%). Flood insurance has paid 3 claims here since 1995.
Graded on FEMA’s expected yearly building damage per dollar of building value (NRI v1.20, December 2025), weighted by where residents live; flood claims are shown, not graded. How hazard risk is graded
What Trenton faces
Each hazard’s share of the building damage FEMA expects here, and how its rate compares with the rest of the country.
River and rain flooding
Tornadoes
Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.
What’s behind Trenton’s grade
River and rain flooding is 74% of the building damage FEMA expects in Trenton, and Trenton’s rate of river and rain flooding damage is higher than 60% of U.S. census tracts. Tornadoes add 16%, at a rate in the top 6% of U.S. census tracts.
B− #88 of 247 in Missouri; higher expected damage per building than 50% of U.S. towns (21,298).
Trenton’s residents live in 4 census tracts; FEMA’s figures are combined by where they live.
The typical Missouri town has higher expected damage than 59% of U.S. towns; within the state, Trenton has less expected damage per building than 65% of Missouri towns.
In dollars, FEMA expects about $3.3M a year in losses across Trenton: $1.8M to buildings, the rest to people and crops.
Does Trenton flood? Rarely: 3 flood claims since 1995
Every paid claim on a federal flood insurance policy in Trenton, from FEMA’s records: 1.1 per 1,000 homes, fewer than 77% of the 13,809 U.S. towns with a flood insurance record.
Trenton isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Grundy County.7 federal disasters brought FEMA money to Trenton
Disasters that paid out in Trenton itself (aid to households or repair grants to the City of Trenton), newest first, with that year’s flood claims.
- 2019Severe Storms, Tornadoes, and Flooding$73K to the City of Trenton for repairs2 flood claims paid that year
- 2014Severe Storms, Tornadoes, Straight-line Winds, and Flooding$78K to the City of Trenton for repairs
- 2011Severe Winter Storm and Snowstorm$12K to the City of Trenton for repairs
- 2010Severe Storms, Flooding, and Tornadoes$4K to the City of Trenton for repairs
- 2008Severe Storms and Flooding2 households applied for aid$8K to the City of Trenton for repairs
- 2007Severe Winter Storms$19K to the City of Trenton for repairs
Show all 7
- 2004Severe Storms, Tornadoes, and Flooding119 households applied for aid$61K aid approved
Grundy County has had 17 natural disasters declared by the President since 1953, most often severe storms, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Old photos of Trenton after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Trenton archive →Trenton and its neighbors
Trenton has the lowest expected damage per building of the 1 graded towns here. Tap a town to see its hazards.
| Town | Hazard risk | Mostly (buildings) | Flood claims |
|---|---|---|---|
| Trenton | B−more damage than 50% | river and rain flooding | 3 |
| Trenton Township | — | not graded yet | |
| Lincoln Township | — | 496 residents; we grade 1,000+ | |
Hazard risk = FEMA’s expected yearly building damage per dollar of building value, vs. the 21,298 U.S. towns we grade; the map is shaded by fifths of the same scale. Flood claims = paid federal flood insurance claims on record.
Get ready for what Trenton faces
A short kit for the hazards that drive the building damage here, 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.
- Pick your spot now: the lowest floor, an inside room, no windows.
- A watch means be ready; a warning means take cover now.
- Keep shoes and a flashlight by the bed.
- 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.
Questions about natural hazards in Trenton
Is Trenton at risk for natural disasters?
On FEMA’s National Risk Index, Trenton has higher expected damage per building than 50% of U.S. towns: B− for hazard risk, #88 of 247 in Missouri. Most of the expected damage is river and rain flooding (74%) and tornadoes (16%). This is FEMA’s model of an average year for today’s buildings, not a forecast.
Does Trenton flood?
Flood insurance has paid 3 claims in Trenton since 1995, $157K in all, or 1.1 per 1,000 homes, fewer than 77% of U.S. towns with a flood insurance record.
Is Trenton in a flood zone?
Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map. In Grundy County, 3% of homes in mapped flood zones carry federal flood insurance, and 0.0% of all homes do.
How much is flood insurance in Trenton?
FEMA’s Community Rating System list shows no discount for Trenton’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
What was the biggest storm in Trenton?
By FEMA money that reached Trenton, Severe Storms, Tornadoes, Straight-line Winds, and Flooding (2014): $78K to the City of Trenton for repairs.
Is Trenton at risk from river and rain flooding?
It is the largest share of the building damage FEMA expects here (74%), and Trenton’s rate for it is higher than 60% of U.S. census tracts.
Storm stories
Memories, warnings and help from neighbors in Trenton.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Trenton’s residents lived in the 2020 census; 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. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.