Retiring in Bay St. Louis

Bay St. Louis is a real, genuinely retirement-relevant Gulf Coast market, with a senior population share well above this project's ~18% Mississippi statewide threshold and a real, favorable state tax treatment for retirement income.

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A real, genuinely older population

Bay St. Louis carries a median age of 53.3 years and a senior (65+) population share of approximately 25.90% (Neilsberg, 2025) -- well above both the national figure and this project's ~18% Mississippi statewide senior-share threshold, with an old-age dependency ratio of 42.1 (base record).

Mississippi's real, generous retirement-income tax exemption

Mississippi fully exempts Social Security, 401(k)/403(b), IRA, and pension income from state income tax -- a real, genuinely significant, statewide benefit that applies fully in Bay St. Louis (base record).

A genuine coastal arts-community lifestyle

Bay St. Louis's real, thriving Old Town Arts District, waterfront cafes, and galleries offer retirees a genuine, walkable coastal-arts lifestyle distinct from a purely resort-style Gulf Coast retirement setting (base record).

Real, elevated coastal insurance costs to weigh directly

Retirees considering Bay St. Louis should weigh the real, genuinely elevated coastal homeowners/wind/flood insurance costs (potentially exceeding $12,000/year combined) directly against the tax and lifestyle benefits (base record).

Key takeaways

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Last reviewed: 2026-08-28. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.