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Byron, IL Post Office 03Photo: Ben Jacobson (Kranar Drogin) · CC BY 2.5
C−Hazard risk
Natural hazards in Byron Township · FEMA

On FEMA’s figures, Byron Township faces more hazard damage per building than 79% of U.S. towns, mostly from river and rain flooding

On FEMA’s National Risk Index, Byron Township gets a C− for hazard risk: higher expected damage per building than 79% of U.S. towns, #641 of 768 in Illinois. Most of that expected damage is river and rain flooding (85%). FEMA’s files show no paid flood insurance claims here.

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

more than 79%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade#641 of 768 in Illinois
By hazard

What Byron Township 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

85%of expected building damage
Well above average · higher than 87% of U.S. census tracts
Recorded about once a year in the area

Tornadoes

8%of expected building damage
Well above average · higher than 82% of U.S. census tracts
Recorded about once every 15 years in the area
Smaller shares here
 Hail Strong wind Earthquakes Ice storms Lightning Hurricanes Wildfire Winter storms Cold waves Heat waves Landslides
FEMA models no building damage here
Coastal floodingAvalanchesTsunamisVolcanic activity
People, not buildings.Counting harm to people as well as buildings, FEMA’s model puts cold waves at 10% of Byron Township’s expected losses. Cold waves do little damage to buildings (0.0%), so they aren’t part of the grade.

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.

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.
Hazard risk grade

What’s behind Byron Township’s grade

River and rain flooding is 85% of the building damage FEMA expects in Byron Township, and Byron Township’s rate of river and rain flooding damage is higher than 87% of U.S. census tracts. Next is tornadoes at 8% (higher than 82% of U.S. census tracts).

Where Byron Township sits
Byron Township
Least damageMiddleMost damage

C− #641 of 768 in Illinois; higher expected damage per building than 79% of U.S. towns (21,298).

Byron Township’s residents live in 3 census tracts; FEMA’s figures are combined by where they live.

What drives the damage to buildings
River and rain flooding85%Tornadoes8%Hail5%Everything else3%

The typical Illinois town has higher expected damage than 54% of U.S. towns; within the state, Byron Township has more expected damage per building than 83% of Illinois towns.

In dollars, FEMA expects about $6.2M a year in losses across Byron Township: $5.0M to buildings, the rest to people and crops.

A small-area figure. Byron Township covers 3 census tracts, combined by where residents live. FEMA’s model is an average year for today’s buildings, not a record: the claims and disasters below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Byron Township flood? No paid flood claims on record

FEMA’s records show no paid flood insurance claims in Byron Township. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.

of homes in flood zones are insured
of all homes are insured
No community discount

Byron Township isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Ogle County.
Disasters

The storms Byron Township remembers

None of the 11 disasters declared for Ogle County shows FEMA aid or repair money reaching Byron Township itself in FEMA’s records, so these are its biggest flood-claim years.

Disasters declared, by decade
Paid out in Byron TownshipOgle County only

Ogle County has had 11 natural disasters declared by the President since 1953, most often winter storms, then floods. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.

Next door

Byron Township and its neighbors

Byron Township is 5th of the 5 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.

Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
Winnebago TownshipAless damage than 85%river and rain flooding2
Marion TownshipC+more damage than 62%river and rain flooding33
Leaf River TownshipC+more damage than 63%river and rain flooding44
Rockvale TownshipCmore damage than 69%river and rain flooding—
Byron TownshipC−more damage than 79%river and rain flooding0
Rockford Township—not graded yet

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.

Be ready

Get ready for what Byron Township faces

A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.

When the river rises
  • 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.
More from Ready.gov ↗
Tornado warnings
  • 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.
More from Ready.gov ↗
Before you buy or rent
  • 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.
When a storm is coming
Forecast and alertsWeather →911, the nearest ERSafety →

Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.

Questions about natural hazards in Byron Township

Is Byron Township at risk for natural disasters?

On FEMA’s National Risk Index, Byron Township has higher expected damage per building than 79% of U.S. towns: C− for hazard risk, #641 of 768 in Illinois. Most of the expected damage is river and rain flooding (85%) and tornadoes (8%). This is FEMA’s model of an average year for today’s buildings, not a forecast.

Is Byron Township 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 Ogle County, 26% of homes in mapped flood zones carry federal flood insurance, and 0.8% of all homes do.

How much is flood insurance in Byron Township?

FEMA’s Community Rating System list shows no discount for Byron Township’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.

Is Byron Township at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (85%), and Byron Township’s rate for it is higher than 87% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Byron Township.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Byron Township’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.