ZIP 99350 Insurance Data

Data Snapshot: ZIP 99350 (Prosser, WA)

ZIP 99350 (Prosser, WA) shows an average homeowners insurance premium of $1,267 per year as of 2022, based on U.S. Treasury FIO ZIP-level observations across approximately 8 reported policies. That is 29% below the national average of $1,776 per year, placing this ZIP in the 29th percentile nationally. Compared to the Washington state average of $1,384, this ZIP runs 8% below, reflecting neighborhood-level differences in catastrophe exposure, property age, and claims history.

The loss ratio for ZIP 99350 is 76.0%, meaning insurers retained a working margin after claims. Claim frequency — the share of policies with at least one claim — is 6.77%, and the average claim severity (amount paid per claim) is $14,223. Nonrenewal — insurers declining to extend coverage at policy expiration — occurs at 0.96% in this ZIP, a rise of 114.7% over the past five years; rising nonrenewal often signals insurer retreat from high-risk markets.

Across 5 years (2018–2022), premiums in ZIP 99350 have risen by 5.2%, ranging from $1,205 to $1,325 with a five-year average of $1,269 — an annualized rate of +1.3% 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.