ZIP 57445 · Brown County
Groton, SD Homeowners Insurance
According to U.S. Treasury FIO 2022 filings, homeowners insurance in ZIP 57445, Groton, South Dakota averages $1,989/yr.
- 15.9%
- Loss ratio
- 1.84%
- Nonrenewal rate
- #41 of 180
- South Dakota rank
- 3
- Policies
The verdict
ZIP 57445 (Groton, SD) is #6,433 of 25,593 for homeowners premium and #3,342 of 21,752 for nonrenewal, per 2022 FIO filings. The two ranks do not match.
- $1,989
- Avg premium (2022)
- #6,433
- of 25,593 on premium
- #3,342
- of 21,752 on nonrenewal
- 75th
- 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
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.
Where ZIP 57445's premium sits nationally
Average annual homeowners premium across 25,593 tracked ZIP codes, as of 2022
$1,989 Around the middle lower than 25% 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 57445. Each other dot is a deterministic sample of ZIPs in South Dakota, 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 57445; crosshairs: South Dakota averages
Read the plotted ZIP values
- ZIP 57226 · Clear Lake $1,350/yr · 0.23%
- ZIP 57317 · Bonesteel $1,479/yr · 2.44%
- ZIP 57376 · Tripp $1,535/yr · 2.27%
- ZIP 57382 · Wessington Springs $1,547/yr · 1.18%
- ZIP 57368 · Plankinton $1,558/yr · 4.68%
- ZIP 57456 · Leola $1,572/yr · 1.85%
- ZIP 57332 · Emery $1,596/yr · 2.88%
- ZIP 57522 · Blunt $1,617/yr · 2.38%
- ZIP 57274 · Webster $1,629/yr · 0.67%
- ZIP 57273 · Waubay $1,646/yr · 1.55%
- ZIP 57375 · Stickney $1,667/yr · 1.75%
- ZIP 57544 · Kennebec $1,672/yr · 1.39%
- ZIP 57212 · Arlington $1,692/yr · 0.22%
- ZIP 57350 · Huron $1,705/yr · 0.83%
- ZIP 57380 · Wagner $1,723/yr · 3.10%
- ZIP 57367 · Pickstown $1,745/yr · 0.92%
- ZIP 57036 · Hurley $1,752/yr · 1.27%
- ZIP 57384 · Wolsey $1,756/yr · 0.69%
- ZIP 57103 · Sioux Falls $1,762/yr · 1.28%
- ZIP 57106 · Sioux Falls $1,776/yr · 1.15%
- ZIP 57442 · Gettysburg $1,781/yr · 0.27%
- ZIP 57580 · Winner $1,786/yr · 1.31%
- ZIP 57325 · Chamberlain $1,790/yr · 0.71%
- ZIP 57223 · Castlewood $1,803/yr · 0.77%
- ZIP 57355 · Kimball $1,808/yr · 0.67%
- ZIP 57735 · Edgemont $1,811/yr · 1.68%
- ZIP 57063 · Tabor $1,843/yr · 1.47%
- ZIP 57078 · Yankton $1,854/yr · 0.88%
- ZIP 57017 · Colman $1,875/yr · 1.24%
- ZIP 57252 · Milbank $1,896/yr · 0.93%
- ZIP 57069 · Vermillion $1,898/yr · 1.54%
- ZIP 57020 · Crooks $1,912/yr · 4.14%
- ZIP 57701 · Rapid City $1,926/yr · 1.62%
- ZIP 57276 · White $1,950/yr · 0.78%
- ZIP 57501 · Pierre $1,956/yr · 1.27%
- ZIP 57268 · Toronto $1,964/yr · 3.57%
- ZIP 57048 · Montrose $1,980/yr · 1.08%
- ZIP 57445 · Groton (this ZIP) $1,989/yr · 1.84%
- ZIP 57034 · Hudson $2,008/yr · 1.06%
- ZIP 57032 · Harrisburg $2,031/yr · 1.49%
- ZIP 57319 · Bridgewater $2,062/yr · 0.76%
- ZIP 57717 · Belle Fourche $2,111/yr · 1.21%
- ZIP 57532 · Fort Pierre $2,168/yr · 1.28%
- ZIP 57718 · Black Hawk $2,223/yr · 1.97%
- ZIP 57451 · Ipswich $2,283/yr · 0.83%
- ZIP 57761 · New Underwood $2,333/yr · 3.89%
- ZIP 57754 · Lead $2,401/yr · 1.44%
- ZIP 57751 · Keystone $2,492/yr · 1.83%
- ZIP 57793 · Whitewood $2,584/yr · 1.28%
- ZIP 57759 · Nemo $2,898/yr · 1.97%
Data Snapshot: ZIP 57445 (Groton, SD)
ZIP 57445 (Groton, SD) shows an average homeowners insurance premium of $1,989 per year as of 2022, based on U.S. Treasury FIO ZIP-level observations across approximately 3 reported policies. That is 12% above the national average of $1,776 per year, placing this ZIP in the 75th percentile nationally. South Dakota homeowners pay $1,854 per year on average; this ZIP diverges by 7% (above), ranking #41 of 180 tracked ZIPs in South Dakota by premium. The closest-priced peer within South Dakota is Montrose (ZIP 57048) at $1,980, essentially matching this ZIP's rate.
At a loss ratio of 15.9%, insurers retained a working margin after claims in this ZIP. 4.74% of policies in ZIP 57445 file at least one claim in a given year, and the average claim severity (amount paid per claim) is $6,689. The nonrenewal rate here is 1.84%, the share of policies insurers choose not to extend at expiration, often a leading sign of market stress.
Since 2018, premiums here have risen by 20.7% through 2022, ranging $1,649 to $1,989 with a 5-year average of $1,796, an annualized rate of +4.8% per year.
Brown County carries a FEMA National Risk Index score of 73.5 (Relatively Low), 74th percentile nationally and #4 of 60 South Dakota counties - 164% above the state mean of 27.9. Dominant mapped hazard: Cold Wave. Companion scores: Social Vulnerability Index 24.1 · Community Resilience 85.6. This is hazard context from FEMA, not a premium formula.
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 57445 Compares
Premium History
Average premium in ZIP 57445, 2018–2022
| Year | Avg Premium | YoY Change |
|---|---|---|
| 2018 | $1,649 | - |
| 2019 | $1,662 | +0.8% |
| 2020 | $1,772 | +6.6% |
| 2021 | $1,908 | +7.7% |
| 2022 | $1,989 | +4.2% |
Filing-window snapshot: ZIP 57445, 2018-2022
Similar ZIP Codes in South Dakota
Other ZIPs in South Dakota priced close to this one.
One of 179 ZIP codes with premium data in South Dakota, 9 are shown here.
Elevated FEMA NRI in Brown County
County National Risk Index joined to ZIP 57445 via FIPS 46013. Hazard and vulnerability context from FEMA, not a premium driver and not a quote.
Social Vulnerability Index 24.1 · Community Resilience 85.6
County hazard ratings
- Wildfire
- Relatively Low
- Flooding
- Relatively Low
- Earthquake
- Very Low
- Tornado
- Relatively Moderate
- Hail
- Relatively Moderate
- Winter weather
- Very High
Source: FEMA National Risk Index · state rollup: South Dakota NRI context · top counties by NRI score.
Nationwide insurance peers outside South Dakota for ZIP 57445
ZIP 57445's county NRI is 73.5 (Relatively Low). Peer ZIPs below are other-state only so the neighborhoods are not South Dakota containment.
Similar average premium
Nearest other-state ZIPs by average homeowners premium ($1,989/yr here).
Similar nonrenewal rate
Nearest other-state ZIPs by nonrenewal rate (1.84% here).
Insurance Guides
Compare, statewide view, and rankings from ZIP 57445
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 57445? ▼
What affects homeowners insurance costs in Groton, SD? ▼
Is homeowners insurance expensive in ZIP 57445 compared to the national average? ▼
What is the nonrenewal rate in ZIP 57445? ▼
How have premiums trended in ZIP 57445 over 5 years? ▼
How does ZIP 57445 compare to the South Dakota state average? ▼
What is the FEMA National Risk Index score for ZIP 57445? ▼
What to do with ZIP 57445
This ZIP's premiums run at the 75th national percentile, but a single number is not a quote.
- See how Groton, SD compares to every other ZIP in South Dakota. South Dakota overview
- Check the ZIPs ranked highest and lowest nationwide before assuming this one is typical. View rankings
- Look up a different ZIP code to compare rates directly. Search ZIP codes
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.