ZIP 29455 · Charleston County

Johns Island, SC Homeowners Insurance

According to U.S. Treasury FIO 2022 filings, homeowners insurance in ZIP 29455, Johns Island, South Carolina averages $4,347/yr.

10.6%
Loss ratio
11.27%
Nonrenewal rate
#8 of 366
South Carolina rank
73
Policies

The verdict

According to U.S. Treasury FIO 2022 filings, Johns Island, SC (ZIP 29455) ranks #462 of 25,593 ZIPs by average premium ($4,347/yr) but #43 of 21,752 by nonrenewal (11.27%). Cost rank is not withdrawal rank.

$4,347
Avg premium (2022)
#462
of 25,593 on premium
#43
of 21,752 on nonrenewal
98th
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

F
PlainInsure Livability Score
20/100
29455 - Johns Island, SC

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
$4,347/yr
Avg premium, 2nd cheapest nationally (Treasury FIO)
Market Stability F
0.11%
Nonrenewal rate -- insurers dropping coverage (Treasury FIO)
Disaster Risk F
98.6
County FEMA National Risk Index score
Community Resilience A+
96.1
County FEMA NRI community-resilience score

Where ZIP 29455's premium sits nationally

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

$4,347 Higher than most more expensive than 98% 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 29455. Each other dot is a deterministic sample of ZIPs in South Carolina, 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 29455; crosshairs: South Carolina averages

Lower premium / higher nonrenewalHigher on bothLower on bothHigher premium / lower nonrenewal$356.4$4073.2$7790.1$11506.9$15223.70%4.2%8.3%12.5%16.6%Average annual premiumNonrenewal rate
Source: U.S. Treasury FIO 2022 ZIP-level homeowners insurance filings. The matrix samples 49 ZIPs across the state premium distribution and retains this ZIP.
Read the plotted ZIP values
  • ZIP 29683 · Slater $1,032/yr · 1.30%
  • ZIP 29385 · Wellford $1,113/yr · 4.17%
  • ZIP 29845 · Plum Branch $1,140/yr · 1.06%
  • ZIP 29657 · Liberty $1,162/yr · 2.16%
  • ZIP 29334 · Duncan $1,198/yr · 6.47%
  • ZIP 29743 · Smyrna $1,217/yr · 1.36%
  • ZIP 29640 · Easley $1,229/yr · 2.13%
  • ZIP 29172 · West Columbia $1,241/yr · 3.14%
  • ZIP 29376 · Roebuck $1,249/yr · 4.38%
  • ZIP 29627 · Belton $1,259/yr · 2.66%
  • ZIP 29673 · Piedmont $1,269/yr · 3.39%
  • ZIP 29332 · Cross Hill $1,285/yr · 0.70%
  • ZIP 29630 · Central $1,294/yr · 1.68%
  • ZIP 29831 · Jackson $1,305/yr · 0.67%
  • ZIP 29697 · Williamston $1,311/yr · 2.81%
  • ZIP 29055 · Great Falls $1,325/yr · 3.92%
  • ZIP 29653 · Hodges $1,336/yr · 0.77%
  • ZIP 29058 · Heath Springs $1,355/yr · 1.07%
  • ZIP 29626 · Anderson $1,366/yr · 3.00%
  • ZIP 29112 · North $1,381/yr · 1.14%
  • ZIP 29052 · Gadsden $1,398/yr · 1.32%
  • ZIP 29817 · Blackville $1,416/yr · 1.43%
  • ZIP 29180 · Winnsboro $1,424/yr · 2.78%
  • ZIP 29040 · Dalzell $1,440/yr · 6.20%
  • ZIP 29154 · Sumter $1,458/yr · 4.85%
  • ZIP 29061 · Hopkins $1,470/yr · 5.99%
  • ZIP 29635 · Cleveland $1,496/yr · 0.83%
  • ZIP 29212 · Columbia $1,512/yr · 4.84%
  • ZIP 29715 · Fort Mill $1,529/yr · 7.16%
  • ZIP 29115 · Orangeburg $1,547/yr · 4.14%
  • ZIP 29036 · Chapin $1,570/yr · 4.45%
  • ZIP 29580 · Nesmith $1,592/yr · 2.44%
  • ZIP 29565 · Latta $1,620/yr · 1.57%
  • ZIP 29056 · Greeleyville $1,643/yr · 1.01%
  • ZIP 29162 · Turbeville $1,654/yr · 0.54%
  • ZIP 29554 · Hemingway $1,690/yr · 2.10%
  • ZIP 29810 · Allendale $1,697/yr · 2.21%
  • ZIP 29477 · Saint George $1,737/yr · 2.46%
  • ZIP 29929 · Islandton $1,761/yr · 0.88%
  • ZIP 29672 · Seneca $1,820/yr · 1.11%
  • ZIP 29431 · Bonneau $1,894/yr · 2.94%
  • ZIP 29588 · Myrtle Beach $1,936/yr · 11.17%
  • ZIP 29418 · North Charleston $2,047/yr · 12.62%
  • ZIP 29909 · Okatie $2,257/yr · 15.87%
  • ZIP 29940 · Seabrook $2,719/yr · 6.53%
  • ZIP 29907 · Beaufort $3,017/yr · 4.43%
  • ZIP 29403 · Charleston $3,557/yr · 7.68%
  • ZIP 29455 · Johns Island (this ZIP) $4,347/yr · 11.27%
  • ZIP 29401 · Charleston $14,548/yr · 0.37%
Avg Premium (2022)
$4,347/yr
Above-median premium
-28.4% since 2018
Loss Ratio
10.6%
Below-median loss ratio
Claim Frequency
2.39%
Avg severity: $19,221
Nonrenewal Rate
11.27%
Above-median nonrenewal rate
+280.8% change

Data Snapshot: ZIP 29455 (Johns Island, SC)

Homeowners in ZIP 29455 (Johns Island, SC) pay an average of $4,347 per year for insurance as of 2022, according to U.S. Treasury FIO ZIP-level data across approximately 73 reported policies. The U.S. average sits at $1,776 per year, so this ZIP runs 145% above that mark and lands in the 98th national percentile. The South Carolina statewide average is $1,765 per year; this ZIP sits 146% above that figure, ranking #8 of 366 tracked ZIPs in South Carolina by premium. The closest-priced peer within South Carolina is Hilton Head Island (ZIP 29926) at $4,299, essentially matching this ZIP's rate.

ZIP 29455 shows a 10.6% loss ratio, an indication that insurers retained a working margin after claims. About 2.39% of policyholders in this ZIP file a claim annually, and the average claim severity (amount paid per claim) is $19,221. The nonrenewal rate here is 11.27%, a rise of 280.8% over the past five years, the share of policies insurers choose not to extend at expiration, often a leading sign of market stress.

Over the 2018–2022 window, ZIP 29455 premiums fallen 28.4%, spanning $4,347 to $6,067 (five-year average: $5,217), an annualized rate of -8.0% per year.

High-band NRI for ZIP 29455's county (Charleston): score 98.6, rating Relatively High, hazard Hurricane. That is #1 of 46 South Carolina counties and the 99th national percentile (39% above the 70.7 state mean). Social Vulnerability Index 22.4 · Community Resilience 96.1. Source: FEMA National Risk Index.

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 29455 Compares

vs National Average
$4,347 vs $1,776
145% above national avg
vs South Carolina Average
$4,347 vs $1,765
146% above state avg
National Percentile
98th percentile
More expensive than most ZIPs

Premium History

Average premium in ZIP 29455, 2018–2022

$4,000$4,500$5,000$5,500$6,000$6,500 20182019202020212022 $4,347
Average homeowners premium per year in ZIP 29455.
Year Avg Premium YoY Change
2018 $6,067 -
2019 $5,687 -6.3%
2020 $5,283 -7.1%
2021 $4,700 -11.0%
2022 $4,347 -7.5%

2018-2022: premiums easing -8.0%/yr

5-Year Avg Premium
$5,217
Premium Range
$4,347 - $6,067
Annual Change Rate
-8.0% per year
Years of Data
5 (2018-2022)

Elevated FEMA NRI in Charleston County

County National Risk Index joined to ZIP 29455 via FIPS 45019. Hazard and vulnerability context from FEMA, not a premium driver and not a quote.

County risk score
98.6
Relatively High · 99th national percentile
In-state county rank
#1
of 46 South Carolina counties · state mean 70.7
Top mapped hazard
Hurricane
Expected annual loss $281,333,148

Social Vulnerability Index 22.4 · Community Resilience 96.1

County hazard ratings

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

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

Out-of-state ZIPs near ZIP 29455's premium and nonrenewal (high-NRI county)

Cross-state peers for ZIP 29455: nearest FIO ZIPs by premium and by nonrenewal, drawn outside South Carolina. County hazard context (Charleston, NRI 98.6) is separate from these price peers.

Similar average premium

Nearest other-state ZIPs by average homeowners premium ($4,347/yr here).

Similar nonrenewal rate

Nearest other-state ZIPs by nonrenewal rate (11.27% 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 29455?
Homeowners insurance runs above most of the country in ZIP 29455 (Johns Island, SC): $4,347/year as of 2022, the 98th national percentile, #8 of 366 ZIPs in South Carolina. Premiums have changed -28.4% over the past 5 years.
What affects homeowners insurance costs in Johns Island, SC?
In ZIP 29455, insurers report a 10.6% loss ratio, a 2.39% claims frequency, and a 11.27% nonrenewal rate, the 98th national percentile for cost.
Is homeowners insurance expensive in ZIP 29455 compared to the national average?
At $4,347/yr, ZIP 29455 runs 145% above the national average of $1,776/yr, the 98th percentile nationally.
What is the nonrenewal rate in ZIP 29455?
Insurers decline to renew 11.27% of policies in ZIP 29455 in South Carolina, a rise of 280.8% over the past 5 years.
How have premiums trended in ZIP 29455 over 5 years?
Over 5 years (2018-2022), premiums in ZIP 29455 have ranged from $4,347 to $6,067, with a 5-year average of $5,217. The annualized change rate is -8.0% per year.
How does ZIP 29455 compare to the South Carolina state average?
ZIP 29455 has an average premium of $4,347/yr compared to the South Carolina state average of $1,765/yr. This ZIP is 146% above the state average, ranking #8 of 366 tracked ZIPs in South Carolina by premium.
What is the FEMA National Risk Index score for ZIP 29455?
County NRI 98.6 (Relatively High) covers ZIP 29455 via Charleston County FIPS 45019. In-state rank #1 of 46; national percentile 99th; hazard Hurricane.

What to do with ZIP 29455

This ZIP's premiums run at the 98th 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.