ZIP 21104 · Carroll County

Marriottsville, MD Homeowners Insurance

Homeowners insurance market metrics for ZIP 21104, Marriottsville, Maryland.

50.5%
Loss ratio
0.37%
Nonrenewal rate
#142 of 422
Maryland rank
104
Policies

The verdict

Marriottsville, MD (ZIP 21104) averages $1,703/yr for homeowners insurance, 4% below the U.S. average, placing it in the 60th percentile nationally.

$1,703
Avg premium (2022)
-4%
vs U.S. average
+16.1%
since 2018
60th
national percentile

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

Avg Premium (2022)
$1,703/yr
+16.1% since 2018
Loss Ratio
50.5%
Claims paid vs premiums
Claim Frequency
5.56%
Avg severity: $15,470
Nonrenewal Rate
0.37%
+15.8% change

Data Snapshot: ZIP 21104 (Marriottsville, MD)

ZIP 21104 (Marriottsville, MD) shows an average homeowners insurance premium of $1,703 per year as of 2022, based on U.S. Treasury FIO ZIP-level observations across approximately 104 reported policies. The U.S. average sits at $1,776 per year, so this ZIP runs 4% below that mark and lands in the 60th national percentile. The Maryland statewide average is $1,627 per year; this ZIP sits 5% above that figure, ranking #142 of 422 tracked ZIPs in Maryland by premium. The closest-priced peer within Maryland is Poolesville (ZIP 20837) at $1,702, essentially matching this ZIP's rate.

At a loss ratio of 50.5%, insurers retained a working margin after claims in this ZIP. 5.56% of policies in ZIP 21104 file at least one claim in a given year, and the average claim severity (amount paid per claim) is $15,470. Nonrenewal, insurers declining to extend coverage at policy expiration, occurs at 0.37% in this ZIP, a rise of 15.8% over the past five years; rising nonrenewal often signals insurer retreat from high-risk markets.

Over the 2018–2022 window, ZIP 21104 premiums risen 16.1%, spanning $1,466 to $1,703 (five-year average: $1,597), an annualized rate of +3.8% per year.

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 21104 Compares

vs National Average
$1,703 vs $1,776
4% below national avg
vs Maryland Average
$1,703 vs $1,627
5% above state avg
National Percentile
60th percentile
Above median cost

Premium History

Average premium in ZIP 21104, 2018–2022

$1,400$1,500$1,600$1,700$1,800 20182019202020212022 $1,703
Average homeowners premium per year in ZIP 21104.
Year Avg Premium YoY Change
2018 $1,466 -
2019 $1,550 +5.7%
2020 $1,629 +5.1%
2021 $1,635 +0.4%
2022 $1,703 +4.1%

5-Year Trend Summary

5-Year Avg Premium
$1,597
Premium Range
$1,466 - $1,703
Annual Change Rate
+3.8% per year
Years of Data
5 (2018-2022)

What this means for ZIP 21104

Treat these figures as a starting benchmark, real quotes from carriers will vary.

  • Compare ZIP 21104 against nearby ZIPs to spot where rates run lower. Compare ZIPs
  • Maryland's statewide premium and nonrenewal picture, compared to other states. Maryland overview
  • Loss ratio explains a lot about this area's insurance market, here's how to read it. Loss ratio guide

FIO figures are ZIP-level market averages across the largest insurers (~80% of the market), not a quote for any single home. Request quotes from multiple licensed carriers before buying or renewing.

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 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 21104?
ZIP 21104 (Marriottsville, MD) tracks close to the national middle for homeowners insurance costs: $1,703 per year as of 2022 (60th percentile, #142 of 422 ZIPs in Maryland). Premiums have changed +16.1% over the past 5 years.
What affects homeowners insurance costs in Marriottsville, MD?
Three figures shape homeowners insurance costs in ZIP 21104: claims frequency (5.56%), loss ratio (50.5%), and nonrenewal rate (0.37%), together placing this ZIP at the 60th national percentile for cost.
Is homeowners insurance expensive in ZIP 21104 compared to the national average?
ZIP 21104 premiums of $1,703/yr are 4% below the national average of $1,776/yr. This ZIP is in the 60th percentile nationally.
What is the nonrenewal rate in ZIP 21104?
The nonrenewal rate in ZIP 21104 is 0.37%, a rise of 15.8% over the past 5 years in Maryland.
How have premiums trended in ZIP 21104 over 5 years?
Over the past 5 years, 2018 through 2022, the range in ZIP 21104 runs $1,466-$1,703 (5-year average $1,597). The annualized change rate is +3.8% per year.
How does ZIP 21104 compare to the Maryland state average?
ZIP 21104 has an average premium of $1,703/yr compared to the Maryland state average of $1,627/yr. This ZIP is 5% above the state average, ranking #142 of 422 tracked ZIPs in Maryland by premium.

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.