ZIP 20818 Insurance Data

Data Snapshot: ZIP 20818 (Cabin John, MD)

ZIP 20818 (Cabin John, MD) shows an average homeowners insurance premium of $2,486 per year as of 2022, based on U.S. Treasury FIO ZIP-level observations across approximately 743 reported policies. That is 40% above the national average of $1,776 per year, placing this ZIP in the 89th percentile nationally. Compared to the Maryland state average of $1,627, this ZIP runs 53% above, reflecting neighborhood-level differences in catastrophe exposure, property age, and claims history.

The loss ratio for ZIP 20818 is 40.4%, meaning insurers retained a working margin after claims. Claim frequency — the share of policies with at least one claim — is 6.20%, and the average claim severity (amount paid per claim) is $16,207. Nonrenewal — insurers declining to extend coverage at policy expiration — occurs at 0.50% in this ZIP; rising nonrenewal often signals insurer retreat from high-risk markets.

Across 5 years (2018–2022), premiums in ZIP 20818 have risen by 13.6%, ranging from $2,188 to $2,486 with a five-year average of $2,342 — an annualized rate of +3.2% per year. 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.