Property Atlas

County hazard profile

Nassau, NY

New York · pop. 1,395,584 · FIPS 36059

Relatively High
FEMA risk rating · RATING
Winter Weather
dominant hazard
$299M
modeled expected annual loss/yr

Expected annual loss · all 3,232 U.S. counties

among the highest nationally

national median $15M/yr Nassau $299M

A real dollar distribution: most counties sit far below a handful of high-exposure ones. A FEMA model of annual loss, not a record of disasters.

FEMA national percentile scores

FEMA/CDC score each county 0–100 against all others — the score is the national rank (RATING). Higher risk and vulnerability are worse; higher resilience is better.

FEMA risk indexRelatively High 97.14/100
national median ~50 among the highest nationally
Social vulnerabilityRelatively Low 25.89/100
national median ~50 lower than most counties (26th percentile)
Community resilienceVery High 97.01/100
national median ~50 among the highest nationally

Recorded · NFIP flood claims RECORDED

Realized flood losses in Nassau

The National Flood Insurance Program has paid 51,516 flood-insurance claims totaling $2.28B in Nassau since 1978. The costliest year was 2012 ($2.01B paid).

Flood-insurance dollars paid by year of loss

1978: $962,049 paid 1979: $1,249,139 paid 1980: $954,697 paid 1981: $193,769 paid 1982: $126,838 paid 1983: $306,280 paid 1984: $1,068,118 paid 1985: $4,462,492 paid 1986: $21,916 paid 1987: $1,009,743 paid 1988: $31,882 paid 1989: $130,844 paid 1990: $308,750 paid 1991: $10,818,894 paid 1992: $37,803,846 paid 1993: $2,245,961 paid 1994: $181,974 paid 1995: $222,679 paid 1996: $4,907,055 paid 1997: $79,362 paid 1998: $401,796 paid 1999: $518,863 paid 2000: $172,612 paid 2001: $133,822 paid 2002: $150,229 paid 2003: $160,084 paid 2004: $113,801 paid 2005: $13,655,762 paid 2006: $483,573 paid 2007: $2,737,788 paid 2008: $643,015 paid 2009: $579,734 paid 2010: $6,489,519 paid 2011: $134,768,482 paid 2012: $2,007,761,416 paid 2013: $412,972 paid 2014: $1,825,779 paid 2015: $224,742 paid 2016: $340,257 paid 2017: $401,770 paid 2018: $2,517,405 paid 2019: $819,271 paid 2020: $489,896 paid 2021: $5,901,003 paid 2022: $16,344,344 paid 2023: $11,739,747 paid 2024: $3,525,096 paid 2025: $444,320 paid 2026: $0 paid 2012 · $2.01B 1978 2026
$2.28B
total paid
$44,274
average claim
$9.5M
largest single claim
70%
in high-risk flood zones (A/V)

RECORDED — these are actual paid NFIP claims (a redacted census from OpenFEMA), not a model. They are the realized counterpart to the FEMA risk score above: one is what happened and got paid, the other is what a model predicts.

Scope: these are flood-insurance claims, so they undercount flooding where owners were uninsured — read this as "what NFIP paid here," not "every flood." County-level totals, not a per-property or per-address verdict. Verify a specific address and buy coverage at FloodSmart.gov; the underlying data is OpenFEMA NFIP Redacted Claims.

What these figures mean

  • RATING — the FEMA risk score, expected loss, social vulnerability, and resilience are FEMA/CDC models, not records of disasters that happened. The 0–100 scores are already national percentiles.
  • MEASURED — population is a recorded census figure.
  • COMPUTED — the county's rank within the dollar-loss distribution is our placement over the 3,232 counties.
  • CONTEXT — the note below is framing, not a measurement.

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What this is — and is not

This is FEMA/CDC modeled hazard exposure for Nassau, NY and where it ranks among U.S. counties. It is not a verdict on whether Nassau is a good or bad place to live — hazard exposure is not place quality, and a county can't opt out of its geography. It is not a per-property or per-address risk assessment, not a prediction of any specific disaster, and not insurance advice. For site-specific risk use a per-property assessment; for the underlying model see FEMA National Risk Index.