Property Atlas

County hazard profile

Johnson, IA

Iowa · pop. 152,809 · FIPS 19103

Relatively Moderate
FEMA risk rating · RATING
Strong Wind
dominant hazard
$96M
modeled expected annual loss/yr

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

lower than most counties (30th percentile)

national median $15M/yr Johnson $96M

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 Moderate 87.44/100
national median ~50 higher than 87% of counties
Social vulnerabilityVery Low 11.39/100
national median ~50 among the lowest nationally
Community resilienceVery High 96.69/100
national median ~50 among the highest nationally

Recorded · NFIP flood claims RECORDED

Realized flood losses in Johnson

The National Flood Insurance Program has paid 446 flood-insurance claims totaling $31.9M in Johnson since 1978. The costliest year was 2008 ($27.4M paid).

Flood-insurance dollars paid by year of loss

1978: $33,129 paid 1980: $1,975 paid 1981: $391 paid 1982: $4,359 paid 1983: $0 paid 1986: $0 paid 1990: $82,790 paid 1991: $39,446 paid 1993: $3,632,883 paid 1994: $0 paid 1996: $13,195 paid 1998: $11,494 paid 2002: $20,122 paid 2006: $0 paid 2007: $57,708 paid 2008: $27,418,678 paid 2009: $13,822 paid 2010: $63,581 paid 2012: $5,173 paid 2013: $247,760 paid 2014: $56,163 paid 2015: $4,592 paid 2016: $109,871 paid 2018: $118,633 paid 2025: $0 paid 2008 · $27.4M 1978 2025
$31.9M
total paid
$71,605
average claim
$1.3M
largest single claim
65%
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 Johnson, IA and where it ranks among U.S. counties. It is not a verdict on whether Johnson 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.