ZIP 51535 · Cass County

Griswold, IA Homeowners Insurance

According to U.S. Treasury FIO 2022 filings, homeowners insurance in ZIP 51535, Griswold, Iowa averages $1,712/yr.

136.7%
Loss ratio
3.13%
Nonrenewal rate
#140 of 580
Iowa rank
5
Policies

The verdict

According to U.S. Treasury FIO 2022 filings, Griswold, IA (ZIP 51535) ranks #9,970 of 25,593 ZIPs by average premium ($1,712/yr) but #1,080 of 21,752 by nonrenewal (3.13%). Cost rank is not withdrawal rank.

$1,712
Avg premium (2022)
#9,970
of 25,593 on premium
#1,080
of 21,752 on nonrenewal
61st
national percentile

Premium rank counts ZIPs with a reported average premium, highest first. Nonrenewal rank counts ZIPs with a reported nonrenewal rate, highest first. The two boards are different extracts.

According to U.S. Treasury Federal Insurance Office data. How we calculate the percentile and national comparison: methodology.

Insurance Livability Score

D
PlainInsure Livability Score
41/100
51535 - Griswold, IA

PlainInsure's own composite of Treasury FIO premium/market data and FEMA National Risk Index hazard data, each dimension percentile-ranked against the full national corpus. Not an official government score, and not a substitute for an actual insurance quote.

Affordability F
$1,712/yr
Avg premium, 39th cheapest nationally (Treasury FIO)
Market Stability F
0.03%
Nonrenewal rate -- insurers dropping coverage (Treasury FIO)
Disaster Risk D
60.1
County FEMA National Risk Index score
Community Resilience A-
81.4
County FEMA NRI community-resilience score

Where ZIP 51535's premium sits nationally

Average annual homeowners premium across 25,593 tracked ZIP codes, as of 2022

$1,712 Around the middle lower than 39% of 25,593 ZIP codes

tracked ZIP codes, bucketed by value

Each bar is a $0.25K-wide band; taller bars hold more ZIP codes. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source U.S. Treasury Federal Insurance Office · 2022

The local market map

Premium and nonrenewal do not always move together

The highlighted dot is ZIP 51535. Each other dot is a deterministic sample of ZIPs in Iowa, spread across the premium range. Crosshairs mark the published state averages, so this is a comparison of two reported measures, not a quote or a forecast.

State ZIP peer map

Highlighted: ZIP 51535; crosshairs: Iowa averages

Lower premium / higher nonrenewalHigher on bothLower on bothHigher premium / lower nonrenewal$1185.1$1531.0$1877.0$2222.9$2568.80.1%0.9%1.7%2.5%3.3%Average annual premiumNonrenewal rate
Source: U.S. Treasury FIO 2022 ZIP-level homeowners insurance filings. The matrix samples 50 ZIPs across the state premium distribution and retains this ZIP.
Read the plotted ZIP values
  • ZIP 52172 · Waukon $1,248/yr · 0.84%
  • ZIP 52032 · Bernard $1,340/yr · 0.61%
  • ZIP 52729 · Calamus $1,372/yr · 2.04%
  • ZIP 52340 · Tiffin $1,399/yr · 0.92%
  • ZIP 52302 · Marion $1,415/yr · 1.02%
  • ZIP 52638 · Middletown $1,432/yr · 1.85%
  • ZIP 52591 · Sigourney $1,447/yr · 1.78%
  • ZIP 52247 · Kalona $1,464/yr · 0.89%
  • ZIP 52761 · Muscatine $1,482/yr · 0.55%
  • ZIP 50173 · Montour $1,490/yr · 1.64%
  • ZIP 50010 · Ames $1,500/yr · 0.57%
  • ZIP 52249 · Keystone $1,508/yr · 1.32%
  • ZIP 50157 · Malcom $1,517/yr · 3.13%
  • ZIP 52317 · North Liberty $1,524/yr · 0.88%
  • ZIP 51031 · Le Mars $1,533/yr · 0.66%
  • ZIP 50464 · Plymouth $1,544/yr · 1.08%
  • ZIP 52064 · Miles $1,551/yr · 0.96%
  • ZIP 51001 · Akron $1,558/yr · 0.37%
  • ZIP 50604 · Aplington $1,566/yr · 1.61%
  • ZIP 51003 · Alton $1,571/yr · 0.55%
  • ZIP 52069 · Preston $1,580/yr · 1.63%
  • ZIP 50021 · Ankeny $1,586/yr · 0.77%
  • ZIP 50211 · Norwalk $1,594/yr · 0.91%
  • ZIP 52213 · Center Point $1,599/yr · 0.38%
  • ZIP 52556 · Fairfield $1,605/yr · 1.18%
  • ZIP 51331 · Arnolds Park $1,613/yr · 0.21%
  • ZIP 52565 · Keosauqua $1,618/yr · 1.22%
  • ZIP 50154 · Mc Callsburg $1,631/yr · 2.82%
  • ZIP 52329 · Rowley $1,637/yr · 2.17%
  • ZIP 52590 · Seymour $1,645/yr · 2.90%
  • ZIP 52722 · Bettendorf $1,649/yr · 0.86%
  • ZIP 51445 · Ida Grove $1,660/yr · 0.43%
  • ZIP 50162 · Melbourne $1,669/yr · 1.09%
  • ZIP 50075 · Ellsworth $1,682/yr · 3.13%
  • ZIP 50273 · Winterset $1,688/yr · 0.92%
  • ZIP 50278 · Zearing $1,701/yr · 2.13%
  • ZIP 52346 · Van Horne $1,707/yr · 1.94%
  • ZIP 51535 · Griswold (this ZIP) $1,712/yr · 3.13%
  • ZIP 50171 · Montezuma $1,720/yr · 0.73%
  • ZIP 50140 · Lamoni $1,731/yr · 1.19%
  • ZIP 52076 · Strawberry Point $1,745/yr · 0.63%
  • ZIP 51028 · Kingsley $1,773/yr · 0.58%
  • ZIP 50446 · Joice $1,811/yr · 1.92%
  • ZIP 50864 · Villisca $1,832/yr · 2.12%
  • ZIP 50627 · Eldora $1,847/yr · 1.41%
  • ZIP 51108 · Sioux City $1,880/yr · 1.64%
  • ZIP 51024 · Hinton $1,912/yr · 0.28%
  • ZIP 50214 · Otley $2,020/yr · 1.40%
  • ZIP 50146 · Linden $2,180/yr · 1.69%
  • ZIP 51355 · Okoboji $2,506/yr · 0.28%
Avg Premium (2022)
$1,712/yr
Near-median premium
+15.1% since 2018
Loss Ratio
136.7%
Above-median loss ratio
Claim Frequency
15.00%
Avg severity: $15,609
Nonrenewal Rate
3.13%
Above-median nonrenewal rate
+14.1% change

Data Snapshot: ZIP 51535 (Griswold, IA)

ZIP 51535 (Griswold, IA) shows an average homeowners insurance premium of $1,712 per year as of 2022, based on U.S. Treasury FIO ZIP-level observations across approximately 5 reported policies. The U.S. average sits at $1,776 per year, so this ZIP runs 4% below that mark and lands in the 61st national percentile. Compared to the Iowa state average of $1,629, this ZIP runs 5% above, ranking #140 of 580 tracked ZIPs in Iowa by premium. The closest-priced peer within Iowa is Ackley (ZIP 50601) at $1,712, essentially matching this ZIP's rate.

With a loss ratio of 136.7%, insurers paid out more in claims than they collected, a signal that premiums may rise or carriers may exit in ZIP 51535. Claim frequency, the share of policies with at least one claim, is 15.00%, and the average claim severity (amount paid per claim) is $15,609. The nonrenewal rate here is 3.13%, a rise of 14.1% over the past five years, the share of policies insurers choose not to extend at expiration, often a leading sign of market stress.

Premium data spanning 5 years shows ZIP 51535 costs have risen 15.1% since 2018, from a low of $1,488 to a high of $1,712, an annualized rate of +3.6% per year.

For ZIP 51535, county-level FEMA NRI is 60.1 in Cass - middle of the national distribution (60th percentile) and #17 among 100 Iowa counties. Top hazard on the index: Cold Wave. Social Vulnerability Index 75.0 · Community Resilience 81.4.

How to read these numbers

The figures on this page come from the U.S. Treasury Federal Insurance Office, which collects homeowners insurance premium and claims data directly from the largest property insurers in the country. Because the data is aggregated at the ZIP-code level and averaged across many policies, it describes the typical cost in an area rather than a quote for any single home. Two houses on the same street can pay very different premiums depending on their age, construction type, roof condition, prior claims, and the specific coverage limits and deductibles the homeowner selects. The loss ratio shows how much of every premium dollar insurers paid back out as claims; a ratio above one means carriers lost money locally, which often precedes rate increases or carrier exits. Rising nonrenewal and claim frequency reveal how stressed the local market has become. Use these figures to gauge the direction and scale of costs in your area, then request quotes from several licensed carriers before buying or renewing a policy. FIO data aggregates voluntary reporting from the 40 largest homeowners insurers, covering roughly 80% of the U.S. market, so figures represent market averages rather than individual policy quotes; your own premium will vary with dwelling value, deductible, coverage limits, construction type, and insurer-specific underwriting. This page is educational research only and is not insurance advice, homeowners should request quotes from multiple licensed carriers or an independent agent before purchasing or renewing coverage.

How ZIP 51535 Compares

vs National Average
$1,712 vs $1,776
4% below national avg
vs Iowa Average
$1,712 vs $1,629
5% above state avg
National Percentile
61th percentile
Above median cost

Premium History

Average premium in ZIP 51535, 2018–2022

$1,450$1,500$1,550$1,600$1,650$1,700$1,750 20182019202020212022 $1,712
Average homeowners premium per year in ZIP 51535.
Year Avg Premium YoY Change
2018 $1,488 -
2019 $1,514 +1.7%
2020 $1,569 +3.7%
2021 $1,654 +5.4%
2022 $1,712 +3.5%

Filing-window snapshot: ZIP 51535, 2018-2022

5-Year Avg Premium
$1,587
Premium Range
$1,488 - $1,712
Annual Change Rate
+3.6% per year
Years of Data
5 (2018-2022)

FEMA NRI context for Cass County

County National Risk Index joined to ZIP 51535 via FIPS 19029. Hazard and vulnerability context from FEMA, not a premium driver and not a quote.

County risk score
60.1
Relatively Low · 60th national percentile
In-state county rank
#17
of 100 Iowa counties · state mean 39.5
Top mapped hazard
Cold Wave
Expected annual loss $4,331,619

Social Vulnerability Index 75.0 · Community Resilience 81.4

County hazard ratings

Wildfire
Very Low
Flooding
Relatively Low
Earthquake
Very Low
Hurricane
Very Low
Tornado
Relatively Moderate
Hail
Relatively Moderate
Winter weather
Relatively Low

Source: FEMA National Risk Index · state rollup: Iowa NRI context · top counties by NRI score.

Nationwide ZIP codes with similar insurance profiles

Cross-state peers for ZIP 51535: nearest FIO ZIPs by premium and by nonrenewal, drawn outside Iowa. County hazard context (Cass, NRI 60.1) is separate from these price peers.

Similar average premium

Nearest other-state ZIPs by average homeowners premium ($1,712/yr here).

Similar nonrenewal rate

Nearest other-state ZIPs by nonrenewal rate (3.13% here).

Source: U.S. Department of the Treasury, Federal Insurance Office (FIO) Homeowners Insurance Data (2018-2022). Premiums are ZIP-level averages and may not reflect individual policy costs

Frequently Asked Questions

How much is homeowners insurance in ZIP 51535?
At the 61st percentile nationally, #140 of 580 ZIPs in Iowa, ZIP 51535 (Griswold, IA) pays a middle-of-the-pack $1,712 per year as of 2022 for homeowners insurance. Premiums have changed +15.1% over the past 5 years.
What affects homeowners insurance costs in Griswold, IA?
Insurers in ZIP 51535 pay out more in claims than they collect, a loss ratio of 136.7%, alongside a claims frequency of 15.00% and a nonrenewal rate of 3.13%.
Is homeowners insurance expensive in ZIP 51535 compared to the national average?
At $1,712/yr, ZIP 51535 runs 4% below the national average of $1,776/yr, the 61st percentile nationally.
What is the nonrenewal rate in ZIP 51535?
ZIP 51535 shows a nonrenewal rate of 3.13% in Iowa, a rise of 14.1% over the past 5 years.
How have premiums trended in ZIP 51535 over 5 years?
ZIP 51535 premiums spanned $1,488 to $1,712 across the 2018-2022 window, a 5-year average of $1,587. The annualized change rate is +3.6% per year.
How does ZIP 51535 compare to the Iowa state average?
ZIP 51535 runs 5% above the Iowa state average ($1,629/yr vs this ZIP's $1,712/yr), ranking #140 of 580 tracked ZIPs in Iowa by premium.
What is the FEMA National Risk Index score for ZIP 51535?
County NRI 60.1 (Relatively Low) covers ZIP 51535 via Cass County FIPS 19029. In-state rank #17 of 100; national percentile 60th; hazard Cold Wave.

What to do with ZIP 51535

This ZIP's premiums run at the 61st national percentile, but a single number is not a quote.

These figures are Treasury FIO aggregates for this ZIP, not a personal insurance quote.

Every figure on PlainInsure is rendered directly from U.S. Treasury Federal Insurance Office data, no number is typed in by an editor. This page draws directly on U.S. Treasury FIO data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.