Property Atlas

County hazard profile

St. Tammany, LA

Louisiana · pop. 263,870 · FIPS 22103

Relatively High
FEMA risk rating · RATING
Hurricane
dominant hazard
$249M
modeled expected annual loss/yr

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

higher than 77% of counties

national median $15M/yr St. Tammany $249M

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 96.56/100
national median ~50 among the highest nationally
Social vulnerabilityRelatively Low 33.97/100
national median ~50 lower than most counties (34th percentile)
Community resilienceVery High 93.83/100
national median ~50 among the highest nationally

Recorded · NFIP flood claims RECORDED

Realized flood losses in St. Tammany

The National Flood Insurance Program has paid 38,336 flood-insurance claims totaling $1.78B in St. Tammany since 1978. The costliest year was 2005 ($1.37B paid).

Flood-insurance dollars paid by year of loss

1978: $81,536 paid 1979: $628,739 paid 1980: $2,501,917 paid 1981: $59,514 paid 1982: $91,922 paid 1983: $9,955,136 paid 1984: $46,085 paid 1985: $4,472,178 paid 1986: $3,161 paid 1987: $21,292 paid 1988: $448,159 paid 1989: $52,236 paid 1990: $194,320 paid 1991: $567,395 paid 1992: $999,512 paid 1993: $1,263,579 paid 1994: $25,454 paid 1995: $61,222,876 paid 1996: $1,326,540 paid 1997: $170,330 paid 1998: $7,224,385 paid 1999: $2,816 paid 2000: $219,083 paid 2001: $25,248,950 paid 2002: $33,734,037 paid 2003: $3,531,251 paid 2004: $3,465,025 paid 2005: $1,371,346,499 paid 2006: $611,509 paid 2007: $1,019,976 paid 2008: $12,186,948 paid 2009: $396,458 paid 2010: $50,555 paid 2011: $2,397,912 paid 2012: $81,324,728 paid 2013: $123,336 paid 2014: $394,219 paid 2015: $347,419 paid 2016: $54,138,286 paid 2017: $530,010 paid 2018: $1,289,364 paid 2019: $828,347 paid 2020: $6,985,258 paid 2021: $80,473,065 paid 2022: $128,768 paid 2023: $166,645 paid 2024: $6,957,966 paid 2025: $27,273 paid 2026: $4,398 paid 2005 · $1.37B 1978 2026
$1.78B
total paid
$46,413
average claim
$1.0M
largest single claim
71%
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 St. Tammany, LA and where it ranks among U.S. counties. It is not a verdict on whether St. Tammany 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.