ZIP 20818 · Montgomery County

Cabin John, MD Homeowners Insurance

According to U.S. Treasury FIO 2022 filings, homeowners insurance in ZIP 20818, Cabin John, Maryland averages $2,486/yr.

40.4%
Loss ratio
0.50%
Nonrenewal rate
#18 of 422
Maryland rank
743
Policies

The verdict

ZIP 20818 (Cabin John, MD) is #2,930 of 25,593 for homeowners premium and #17,810 of 21,752 for nonrenewal, per 2022 FIO filings. The two ranks do not match.

$2,486
Avg premium (2022)
#2,930
of 25,593 on premium
#17,810
of 21,752 on nonrenewal
89th
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
35/100
20818 - Cabin John, MD

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
$2,486/yr
Avg premium, 11th cheapest nationally (Treasury FIO)
Market Stability A-
0.00%
Nonrenewal rate -- insurers dropping coverage (Treasury FIO)
Disaster Risk F
91.7
County FEMA National Risk Index score
Community Resilience C+
63.5
County FEMA NRI community-resilience score

Where ZIP 20818's premium sits nationally

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

$2,486 Higher than most more expensive than 89% 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 20818. Each other dot is a deterministic sample of ZIPs in Maryland, 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 20818; crosshairs: Maryland averages

Lower premium / higher nonrenewalHigher on bothLower on bothHigher premium / lower nonrenewal$652.8$1999.3$3345.8$4692.3$6038.90.2%1.0%1.9%2.7%3.6%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 21835 · Linkwood $898/yr · 3.41%
  • ZIP 21545 · Mount Savage $1,036/yr · 0.59%
  • ZIP 21716 · Brunswick $1,069/yr · 0.51%
  • ZIP 21234 · Parkville $1,119/yr · 0.56%
  • ZIP 20794 · Jessup $1,170/yr · 1.11%
  • ZIP 21076 · Hanover $1,192/yr · 0.46%
  • ZIP 21001 · Aberdeen $1,216/yr · 0.90%
  • ZIP 21227 · Halethorpe $1,237/yr · 0.78%
  • ZIP 21701 · Frederick $1,254/yr · 0.61%
  • ZIP 21649 · Marydel $1,272/yr · 0.45%
  • ZIP 21713 · Boonsboro $1,288/yr · 0.61%
  • ZIP 21629 · Denton $1,301/yr · 0.96%
  • ZIP 21921 · Elkton $1,325/yr · 1.14%
  • ZIP 21871 · Westover $1,343/yr · 0.42%
  • ZIP 21636 · Goldsboro $1,355/yr · 0.83%
  • ZIP 21917 · Colora $1,375/yr · 0.73%
  • ZIP 20871 · Clarksburg $1,391/yr · 0.42%
  • ZIP 20876 · Germantown $1,405/yr · 0.80%
  • ZIP 20770 · Greenbelt $1,420/yr · 0.49%
  • ZIP 20714 · North Beach $1,428/yr · 0.75%
  • ZIP 21733 · Fairplay $1,439/yr · 0.90%
  • ZIP 20872 · Damascus $1,460/yr · 0.44%
  • ZIP 21814 · Bivalve $1,478/yr · 0.87%
  • ZIP 20707 · Laurel $1,491/yr · 0.64%
  • ZIP 21718 · Burkittsville $1,503/yr · 1.96%
  • ZIP 21661 · Rock Hall $1,530/yr · 0.98%
  • ZIP 20715 · Bowie $1,549/yr · 0.66%
  • ZIP 20746 · Suitland $1,581/yr · 0.94%
  • ZIP 20653 · Lexington Park $1,600/yr · 0.40%
  • ZIP 20716 · Bowie $1,611/yr · 0.81%
  • ZIP 20878 · Gaithersburg $1,638/yr · 0.70%
  • ZIP 21047 · Fallston $1,656/yr · 0.40%
  • ZIP 20620 · Callaway $1,684/yr · 0.88%
  • ZIP 20732 · Chesapeake Beach $1,711/yr · 0.47%
  • ZIP 20735 · Clinton $1,733/yr · 0.87%
  • ZIP 21117 · Owings Mills $1,744/yr · 0.84%
  • ZIP 21212 · Baltimore $1,782/yr · 0.56%
  • ZIP 20685 · Saint Leonard $1,815/yr · 0.51%
  • ZIP 21645 · Kennedyville $1,844/yr · 0.31%
  • ZIP 20779 · Tracys Landing $1,891/yr · 0.75%
  • ZIP 21209 · Baltimore $1,916/yr · 0.65%
  • ZIP 20639 · Huntingtown $1,982/yr · 0.72%
  • ZIP 21057 · Glen Arm $2,049/yr · 0.67%
  • ZIP 21673 · Trappe $2,113/yr · 0.95%
  • ZIP 21658 · Queenstown $2,252/yr · 0.82%
  • ZIP 20814 · Bethesda $2,355/yr · 0.31%
  • ZIP 21131 · Phoenix $2,475/yr · 0.98%
  • ZIP 20818 · Cabin John (this ZIP) $2,486/yr · 0.50%
  • ZIP 21071 · Glyndon $2,705/yr · 0.73%
  • ZIP 21056 · Gibson Island $5,794/yr · 1.49%
Avg Premium (2022)
$2,486/yr
Above-median premium
+13.6% since 2018
Loss Ratio
40.4%
Near-median loss ratio
Claim Frequency
6.20%
Avg severity: $16,207
Nonrenewal Rate
0.50%
Below-median nonrenewal rate

Data Snapshot: ZIP 20818 (Cabin John, MD)

U.S. Treasury FIO ZIP-level observations put the average homeowners insurance premium in ZIP 20818 (Cabin John, MD) at $2,486 per year for 2022 across approximately 743 reported policies. Nationally, that ranks ZIP 20818 in the 89th percentile, 40% above the U.S. average of $1,776 per year. Maryland homeowners pay $1,627 per year on average; this ZIP diverges by 53% (above), ranking #18 of 422 tracked ZIPs in Maryland by premium. The closest-priced peer within Maryland is Phoenix (ZIP 21131) at $2,475, essentially matching this ZIP's rate.

The loss ratio for ZIP 20818 is 40.4%, meaning insurers retained a working margin after claims. About 6.20% of policyholders in this ZIP file a claim annually, and the average claim severity (amount paid per claim) is $16,207. 0.50% of ZIP 20818 policies go unrenewed at expiration, a pattern that tends to precede broader insurer pullback in stressed markets.

Over the 2018–2022 window, ZIP 20818 premiums risen 13.6%, spanning $2,188 to $2,486 (five-year average: $2,342), an annualized rate of +3.2% per year.

High-band NRI for ZIP 20818's county (Montgomery): score 91.7, rating Relatively Moderate, hazard Hurricane. That is #4 of 24 Maryland counties and the 92nd national percentile (52% above the 60.2 state mean). Social Vulnerability Index 19.9 · Community Resilience 63.5. 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 20818 Compares

vs National Average
$2,486 vs $1,776
40% above national avg
vs Maryland Average
$2,486 vs $1,627
53% above state avg
National Percentile
89th percentile
More expensive than most ZIPs

Premium History

Average premium in ZIP 20818, 2018–2022

$2,100$2,200$2,300$2,400$2,500$2,600 20182019202020212022 $2,486
Average homeowners premium per year in ZIP 20818.
Year Avg Premium YoY Change
2018 $2,188 -
2019 $2,222 +1.6%
2020 $2,392 +7.7%
2021 $2,423 +1.3%
2022 $2,486 +2.6%

Filing-window snapshot: ZIP 20818, 2018-2022

5-Year Avg Premium
$2,342
Premium Range
$2,188 - $2,486
Annual Change Rate
+3.2% per year
Years of Data
5 (2018-2022)

Elevated FEMA NRI in Montgomery County

County National Risk Index joined to ZIP 20818 via FIPS 24031. Hazard and vulnerability context from FEMA, not a premium driver and not a quote.

County risk score
91.7
Relatively Moderate · 92nd national percentile
In-state county rank
#4
of 24 Maryland counties · state mean 60.2
Top mapped hazard
Hurricane
Expected annual loss $12,497,244

Social Vulnerability Index 19.9 · Community Resilience 63.5

County hazard ratings

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

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

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

Cross-state peers for ZIP 20818: nearest FIO ZIPs by premium and by nonrenewal, drawn outside Maryland. County hazard context (Montgomery, NRI 91.7) is separate from these price peers.

Similar average premium

Nearest other-state ZIPs by average homeowners premium ($2,486/yr here).

Similar nonrenewal rate

Nearest other-state ZIPs by nonrenewal rate (0.50% 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 20818?
Homeowners insurance runs above most of the country in ZIP 20818 (Cabin John, MD): $2,486/year as of 2022, the 89th national percentile, #18 of 422 ZIPs in Maryland. Premiums have changed +13.6% over the past 5 years.
What affects homeowners insurance costs in Cabin John, MD?
In ZIP 20818, insurers report a 40.4% loss ratio, a 6.20% claims frequency, and a 0.50% nonrenewal rate, the 89th national percentile for cost.
Is homeowners insurance expensive in ZIP 20818 compared to the national average?
At $2,486/yr, ZIP 20818 runs 40% above the national average of $1,776/yr, the 89th percentile nationally.
What is the nonrenewal rate in ZIP 20818?
Insurers decline to renew 0.50% of policies in ZIP 20818 in Maryland.
How have premiums trended in ZIP 20818 over 5 years?
Over the past 5 years, 2018 through 2022, the range in ZIP 20818 runs $2,188-$2,486 (5-year average $2,342). The annualized change rate is +3.2% per year.
How does ZIP 20818 compare to the Maryland state average?
ZIP 20818 runs 53% above the Maryland state average ($1,627/yr vs this ZIP's $2,486/yr), ranking #18 of 422 tracked ZIPs in Maryland by premium.
What is the FEMA National Risk Index score for ZIP 20818?
FEMA NRI for the county containing ZIP 20818 (Montgomery) is 91.7 - #4/24 in Maryland, 92nd national percentile, top hazard Hurricane. It does not replace the FIO premium figures on this page.

What to do with ZIP 20818

This ZIP's premiums run at the 89th 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.