ZIP 37721 · Knox County

Corryton, TN Homeowners Insurance

According to U.S. Treasury FIO 2022 filings, homeowners insurance in ZIP 37721, Corryton, Tennessee averages $1,323/yr.

59.4%
Loss ratio
0.70%
Nonrenewal rate
#518 of 552
Tennessee rank
99
Policies

The verdict

Treasury FIO 2022: Corryton, TN sits #17,115 nationally on average premium ($1,323) versus #14,392 on nonrenewal rate (0.70%).

$1,323
Avg premium (2022)
#17,115
of 25,593 on premium
#14,392
of 21,752 on nonrenewal
33rd
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
48/100
37721 - Corryton, TN

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 B-
$1,323/yr
Avg premium, 67th cheapest nationally (Treasury FIO)
Market Stability B-
0.01%
Nonrenewal rate -- insurers dropping coverage (Treasury FIO)
Disaster Risk F
92.1
County FEMA National Risk Index score
Community Resilience C+
61.3
County FEMA NRI community-resilience score

Where ZIP 37721's premium sits nationally

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

$1,323 Lower than most lower than 67% 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 37721. Each other dot is a deterministic sample of ZIPs in Tennessee, 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 37721; crosshairs: Tennessee averages

Lower premium / higher nonrenewalHigher on bothLower on bothHigher premium / lower nonrenewal$889.2$1710.9$2532.7$3354.4$4176.10.0%0.6%1.1%1.7%2.2%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 37665 · Kingsport $1,039/yr · 2.12%
  • ZIP 37818 · Mosheim $1,232/yr · 0.89%
  • ZIP 37745 · Greeneville $1,282/yr · 0.61%
  • ZIP 37721 · Corryton (this ZIP) $1,323/yr · 0.70%
  • ZIP 37688 · Shady Valley $1,325/yr · 1.10%
  • ZIP 37849 · Powell $1,343/yr · 1.05%
  • ZIP 38558 · Crossville $1,373/yr · 0.12%
  • ZIP 38551 · Celina $1,401/yr · 0.56%
  • ZIP 37757 · Jacksboro $1,428/yr · 2.09%
  • ZIP 38556 · Jamestown $1,451/yr · 1.01%
  • ZIP 37210 · Nashville $1,473/yr · 1.96%
  • ZIP 37724 · Cumberland Gap $1,496/yr · 2.12%
  • ZIP 38571 · Crossville $1,508/yr · 0.80%
  • ZIP 37385 · Tellico Plains $1,530/yr · 0.90%
  • ZIP 37373 · Sale Creek $1,550/yr · 1.53%
  • ZIP 38564 · Granville $1,563/yr · 2.08%
  • ZIP 38464 · Lawrenceburg $1,577/yr · 1.26%
  • ZIP 37876 · Sevierville $1,589/yr · 0.77%
  • ZIP 38545 · Bloomington Springs $1,600/yr · 0.91%
  • ZIP 37872 · Sunbright $1,613/yr · 1.47%
  • ZIP 37160 · Shelbyville $1,624/yr · 1.18%
  • ZIP 37416 · Chattanooga $1,632/yr · 1.22%
  • ZIP 37369 · Reliance $1,646/yr · 1.33%
  • ZIP 37742 · Greenback $1,656/yr · 0.67%
  • ZIP 37209 · Nashville $1,669/yr · 1.06%
  • ZIP 37073 · Greenbrier $1,679/yr · 1.52%
  • ZIP 38321 · Cedar Grove $1,690/yr · 1.90%
  • ZIP 38320 · Camden $1,704/yr · 1.01%
  • ZIP 37142 · Palmyra $1,719/yr · 1.61%
  • ZIP 37146 · Pleasant View $1,726/yr · 1.30%
  • ZIP 37313 · Coalmont $1,740/yr · 2.03%
  • ZIP 37143 · Pegram $1,762/yr · 0.48%
  • ZIP 38317 · Bruceton $1,775/yr · 0.41%
  • ZIP 37191 · Woodlawn $1,788/yr · 0.53%
  • ZIP 38339 · Guys $1,802/yr · 0.87%
  • ZIP 38232 · Hornbeak $1,814/yr · 1.02%
  • ZIP 37095 · Liberty $1,830/yr · 1.87%
  • ZIP 37203 · Nashville $1,845/yr · 1.45%
  • ZIP 37033 · Centerville $1,855/yr · 0.99%
  • ZIP 38261 · Union City $1,871/yr · 0.99%
  • ZIP 38581 · Rock Island $1,891/yr · 1.73%
  • ZIP 38382 · Trenton $1,912/yr · 0.91%
  • ZIP 37153 · Rockvale $1,945/yr · 1.74%
  • ZIP 37189 · Whites Creek $2,012/yr · 1.30%
  • ZIP 37085 · Lascassas $2,064/yr · 1.27%
  • ZIP 38128 · Memphis $2,111/yr · 1.96%
  • ZIP 38111 · Memphis $2,245/yr · 1.71%
  • ZIP 38103 · Memphis $2,426/yr · 1.79%
  • ZIP 38138 · Germantown $2,809/yr · 1.23%
  • ZIP 37350 · Lookout Mountain $4,027/yr · 0.20%
Avg Premium (2022)
$1,323/yr
Below-median premium
+0.3% since 2018
Loss Ratio
59.4%
Above-median loss ratio
Claim Frequency
5.72%
Avg severity: $13,735
Nonrenewal Rate
0.70%
Near-median nonrenewal rate
+7.9% change

Data Snapshot: ZIP 37721 (Corryton, TN)

Homeowners in ZIP 37721 (Corryton, TN) pay an average of $1,323 per year for insurance as of 2022, according to U.S. Treasury FIO ZIP-level data across approximately 99 reported policies. Nationally, that ranks ZIP 37721 in the 33rd percentile, 25% below the U.S. average of $1,776 per year. Tennessee homeowners pay $1,728 per year on average; this ZIP diverges by 23% (below), ranking #518 of 552 tracked ZIPs in Tennessee by premium. The closest-priced peer within Tennessee is Talbott (ZIP 37877) at $1,322, essentially matching this ZIP's rate.

At a loss ratio of 59.4%, insurers retained a working margin after claims in this ZIP. Claim frequency, the share of policies with at least one claim, is 5.72%, and the average claim severity (amount paid per claim) is $13,735. 0.70% of ZIP 37721 policies go unrenewed at expiration, a rise of 7.9% over the past five years, a pattern that tends to precede broader insurer pullback in stressed markets.

Over the 2018–2022 window, ZIP 37721 premiums risen 0.3%, spanning $1,278 to $1,323 (five-year average: $1,313), an annualized rate of +0.1% per year.

FEMA NRI places Knox County in the upper risk band at 92.1 (Relatively Moderate): national 92nd percentile, #4/95 inside Tennessee, and 76% above the 52.5 state mean. Top hazard on the map is Earthquake. Social Vulnerability Index 22.7 · Community Resilience 61.3. NRI does not price policies; it situates the county.

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 37721 Compares

vs National Average
$1,323 vs $1,776
25% below national avg
vs Tennessee Average
$1,323 vs $1,728
23% below state avg
National Percentile
33th percentile
Below median cost

Premium History

Average premium in ZIP 37721, 2018–2022

$1,270$1,280$1,290$1,300$1,310$1,320$1,330 20182019202020212022 $1,323
Average homeowners premium per year in ZIP 37721.
Year Avg Premium YoY Change
2018 $1,319 -
2019 $1,322 +0.2%
2020 $1,278 -3.4%
2021 $1,321 +3.4%
2022 $1,323 +0.2%

Filing-window snapshot: ZIP 37721, 2018-2022

5-Year Avg Premium
$1,313
Premium Range
$1,278 - $1,323
Annual Change Rate
+0.1% per year
Years of Data
5 (2018-2022)

Elevated FEMA NRI in Knox County

County National Risk Index joined to ZIP 37721 via FIPS 47093. Hazard and vulnerability context from FEMA, not a premium driver and not a quote.

County risk score
92.1
Relatively Moderate · 92nd national percentile
In-state county rank
#4
of 95 Tennessee counties · state mean 52.5
Top mapped hazard
Earthquake
Expected annual loss $30,292,961

Social Vulnerability Index 22.7 · Community Resilience 61.3

County hazard ratings

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

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

Cross-state FIO peers for a higher-NRI ZIP (Knox County)

ZIP 37721's county NRI is 92.1 (Relatively Moderate). Peer ZIPs below are other-state only so the neighborhoods are not Tennessee containment.

Similar average premium

Nearest other-state ZIPs by average homeowners premium ($1,323/yr here).

Similar nonrenewal rate

Nearest other-state ZIPs by nonrenewal rate (0.70% 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 37721?
ZIP 37721 (Corryton, TN) tracks close to the national middle for homeowners insurance costs: $1,323 per year as of 2022 (33rd percentile, #518 of 552 ZIPs in Tennessee). Premiums have changed +0.3% over the past 5 years.
What affects homeowners insurance costs in Corryton, TN?
Three figures shape homeowners insurance costs in ZIP 37721: claims frequency (5.72%), loss ratio (59.4%), and nonrenewal rate (0.70%), together placing this ZIP at the 33rd national percentile for cost.
Is homeowners insurance expensive in ZIP 37721 compared to the national average?
ZIP 37721 premiums of $1,323/yr are 25% below the national average of $1,776/yr. This ZIP is in the 33rd percentile nationally.
What is the nonrenewal rate in ZIP 37721?
ZIP 37721 shows a nonrenewal rate of 0.70% in Tennessee, a rise of 7.9% over the past 5 years.
How have premiums trended in ZIP 37721 over 5 years?
Over the past 5 years, 2018 through 2022, the range in ZIP 37721 runs $1,278-$1,323 (5-year average $1,313). The annualized change rate is +0.1% per year.
How does ZIP 37721 compare to the Tennessee state average?
The Tennessee state average is $1,728/yr; ZIP 37721 averages $1,323/yr, 23% below that figure, ranking #518 of 552 tracked ZIPs in Tennessee by premium.
What is the FEMA National Risk Index score for ZIP 37721?
County NRI 92.1 (Relatively Moderate) covers ZIP 37721 via Knox County FIPS 47093. In-state rank #4 of 95; national percentile 92nd; hazard Earthquake.

What to do with ZIP 37721

This ZIP's premiums run at the 33rd 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.