Cost of Living in Mandeville

Mandeville's cost of living centers on a real, wide housing-price spread -- genuinely higher than Covington's -- and the same insurance-versus-property-tax tradeoff documented across St. Tammany Parish.

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A real, disclosed housing-cost spread

Mandeville home values carried a real, disclosed spread this pass: Zillow's typical home value ran approximately $356,275 while Resideline separately cited a substantially higher $415,000 median closing price.

Insurance savings offset by property tax

Mandeville's own average insurance premium runs genuinely below Louisiana's statewide average, while St. Tammany Parish's effective property tax rate (~0.74%) runs above the state's ~0.52%-0.55% average.

Louisiana's flat 3% state income tax

Louisiana's real 2024 reform (effective January 1, 2025) replaced the old graduated income tax with a flat 3% rate, applying to Mandeville as elsewhere in the state.

Key takeaways

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Last reviewed: 2026-08-27. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.