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Glen Rock PAPhoto: Skabat169 · CC BY-SA 3.0
B−Hazard risk
Natural hazards in Glen Rock · FEMA

FEMA expects about as much hazard damage per building in Glen Rock as in the typical U.S. town, mostly from river and rain flooding

On FEMA’s National Risk Index, Glen Rock gets a B− for hazard risk: lower expected damage per building than 52% of U.S. towns. Most of that expected damage is river and rain flooding (82%), then hurricanes (13%). Flood insurance has paid 64 claims here since 1978.

River and rain flooding 82%Hurricanes 13%Earthquakes 3%

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

less than 52%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade
Hazard risk
B−
in Pennsylvania · lower than 52% of U.S. towns
Main hazard
River and rain flooding
82% of expected building damage
Flood claims
64
paid since 1978 · $532K
Flooded more than once
4
properties
Disasters paid out here
3
of 17 declared for York County

What stands out about Glen Rock’s natural hazards

From FEMA’s model and FEMA’s records, below.

Moved out of harm’s way1 flood-prone property bought out and cleared with FEMA grants.Remembers 197943 flood claims were paid for 1979 alone, the most of any year.
By hazard

What Glen Rock 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

82%of expected building damage
Above average · higher than 65% of U.S. census tracts
Recorded about 3 times a year in the area

Hurricanes

13%of expected building damage
Well above average · higher than 83% of U.S. census tracts
Recorded about once every 11 years in the area
Smaller shares here
 Earthquakes Tornadoes Strong wind Winter storms Landslides Lightning Hail Wildfire Ice storms Cold waves Heat waves
FEMA models no building damage here
Coastal floodingAvalanchesTsunamisVolcanic activity

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 Glen Rock’s grade

River and rain flooding is 82% of the building damage FEMA expects in Glen Rock, and Glen Rock’s rate of river and rain flooding damage is higher than 65% of U.S. census tracts. Next is hurricanes at 13% (higher than 83% of U.S. census tracts).

Where Glen Rock sits
Glen Rock
Least damageMiddleMost damage

B− lower expected damage per building than 52% of U.S. towns (21,298).

All of Glen Rock’s residents live in one census tract; the figures are that tract’s.

What drives the damage to buildings
River and rain flooding82%Hurricanes13%Everything else5%

In dollars, FEMA expects about $660K a year in losses across Glen Rock: $490K to buildings, the rest to people and crops.

Shared tract.All of Glen Rock’s 2,121 residents (2020 census) live in one census tract. FEMA publishes its model by tract, so the rate and the hazard mix are the tract’s. The flood claims below are the town’s own.
A shared figure. The grade describes the whole tract, not each street in it, and FEMA’s model is an average year for today’s buildings, not a record: the claims below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Glen Rock flood? Sometimes: 64 flood claims since 1978

Every paid claim on a federal flood insurance policy in Glen Rock, from FEMA’s records: 73.7 per 1,000 homes, more than 95% of the 13,809 U.S. towns with a flood insurance record.

Paid flood claims, by year
1978: 3 claims1979: 43 claims1980: 0 claims1981: 0 claims1982: 0 claims1983: 0 claims1984: 0 claims1985: 1 claim1986: 0 claims1987: 0 claims1988: 0 claims1989: 0 claims1990: 0 claims1991: 0 claims1992: 0 claims1993: 0 claims1994: 0 claims1995: 0 claims1996: 0 claims1997: 0 claims1998: 0 claims1999: 0 claims2000: 0 claims2001: 0 claims2002: 0 claims2003: 0 claims2004: 1 claim2005: 0 claims2006: 0 claims2007: 0 claims2008: 0 claims2009: 0 claims2010: 0 claims2011: 9 claims2012: 1 claim2013: 0 claims2014: 0 claims2015: 0 claims2016: 0 claims2017: 0 claims2018: 6 claims2019: 0 claims2020: 0 claims2021: 0 claims2022: 0 claims2023: 0 claims2024: 0 claims2025: 0 claims2026: 0 claims197920112018
19782026
Biggest named events
  • Tropical Storm Lee9 claims · $171K
  • Tropical Storm Ivan1 claim · $5K
64
paid claims since 1978
$532K
paid to owners
4
homes flooded more than once
$8K
average claim
Homes that flooded again and again
FEMA “severe repetitive loss” (0)Flooded 2+ times
of homes in flood zones are insured
of all homes are insured
No community discount

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

Insurance rates: York County.
What’s been done with FEMA grants
1flood-prone property bought out and cleared
Disasters

3 federal disasters brought FEMA money to Glen Rock

Disasters that paid out in Glen Rock itself (aid to households or repair grants to the Borough of Glen Rock), newest first, with that year’s flood claims.

  1. 2021Remnants of Hurricane Ida15 households applied for aid$2K aid approved
  2. 2011Tropical Storm Lee71 households applied for aid$204K aid approved9 flood claims paid for it, $171K
  3. 2004Tropical Depression Ivan6 households applied for aid$9K aid approved1 flood claim paid for it, $5K
Disasters declared, by decade
Paid out in Glen RockYork County only

York County has had 17 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.

Were you here?

Old photos of Glen Rock after a storm or flood belong in the town’s history. Add one, or share what you remember below.

Add to the Glen Rock archive →
Be ready

Get ready for what Glen Rock 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 ↗
Hurricane season
  • The season runs June through November and peaks from mid-August to mid-October.
  • Bring in porch furniture and anything the wind can throw.
  • Fill the gas tank and charge phones before the storm arrives.
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 Glen Rock

Is Glen Rock at risk for natural disasters?

On FEMA’s National Risk Index, Glen Rock has lower expected damage per building than 52% of U.S. towns: B− for hazard risk. Most of the expected damage is river and rain flooding (82%) and hurricanes (13%). The figures are for the one census tract the town shares with its neighbors. This is FEMA’s model of an average year for today’s buildings, not a forecast.

Does Glen Rock flood?

Flood insurance has paid 64 claims in Glen Rock since 1978, $532K in all, or 73.7 per 1,000 homes, more than 95% of U.S. towns with a flood insurance record. 4 properties have flooded more than once. The most claims came from Tropical Storm Lee (9).

Is Glen Rock 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 York County, 30% of homes in mapped flood zones carry federal flood insurance, and 0.4% of all homes do.

How much is flood insurance in Glen Rock?

FEMA’s Community Rating System list shows no discount for Glen Rock’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 Glen Rock?

By FEMA money that reached Glen Rock, Tropical Storm Lee (2011): 71 households applied for aid, $204K approved. By flood claims, Tropical Storm Lee: 9 paid, $171K.

Is Glen Rock at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (82%), and Glen Rock’s rate for it is higher than 65% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Glen Rock.

Town Square →
Start the conversation

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