ZIP 58237 Insurance Data

Data Snapshot: ZIP 58237 (Grafton, ND)

ZIP 58237 (Grafton, ND) shows an average homeowners insurance premium of $1,812 per year as of 2022, based on U.S. Treasury FIO ZIP-level observations across approximately 8 reported policies. That is 2% above the national average of $1,776 per year, placing this ZIP in the 66th percentile nationally. Compared to the North Dakota state average of $1,954, this ZIP runs 7% below, reflecting neighborhood-level differences in catastrophe exposure, property age, and claims history.

The loss ratio for ZIP 58237 is 40.1%, meaning insurers retained a working margin after claims. Claim frequency — the share of policies with at least one claim — is 5.29%, and the average claim severity (amount paid per claim) is $13,758. Nonrenewal — insurers declining to extend coverage at policy expiration — occurs at 0.88% in this ZIP, a drop of 38.6% over the past five years; rising nonrenewal often signals insurer retreat from high-risk markets.

Across 5 years (2018–2022), premiums in ZIP 58237 have risen by 13.6%, ranging from $1,595 to $1,812 with a five-year average of $1,693 — 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.