Cost of Living in Gaithersburg

Gaithersburg's cost of living centers on genuinely expensive-by-national-standards housing that nonetheless runs well below Bethesda's tier within the same Montgomery County, plus Maryland's complex layered income tax.

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Housing costs below the Bethesda tier

Gaithersburg's $485,000-$497,000 disclosed home-price range sits roughly a third of Bethesda's average value -- a real, meaningful intra-county cost difference.

Maryland's layered state-plus-county income tax

Maryland's 10-bracket state income tax (2%-6.5%) sits under Montgomery County's mandatory local piggyback tax, currently 3.2% flat and transitioning to a progressive 2.7%/3.0%/3.3% structure effective July 1, 2027.

Property tax runs below the Maryland statewide average

Montgomery County's effective property tax rate (~0.87%) runs genuinely below Maryland's own statewide average despite the county's high assessed values.

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.