Gallatin County, MT real estate

What the numbers say

Gallatin County, MT real estate at a glance

By AstroCore · Realtor.com, US Census and Freddie Mac data

In September 2026, the median home in Gallatin County listed for $897,475, up 4.4% from a year earlier. That is 41% above the Montana median of $635,000.

Homes spent a median of 73 days on the market, faster than 77 days a year ago. That makes Gallatin County the #4 fastest-selling of 6 Montana counties we track.

Homeowners in Gallatin County pay a median of $3,933 a year in property taxes on a median home value of $667,600, an effective rate of about 0.59%. The Montana average is 0.72%, which makes Gallatin County the #19 lowest-tax of 56 counties in the state with published tax data.

Renters pay a median of $1,694 a month, and $1,562 for a two-bedroom. At today's prices a typical home costs about 44 times a year's rent, which generally favors renting over buying in the short term.

With 20% down and today's 7.24% average 30-year rate, the monthly payment on a $897,000 home here comes to about $5,708 including property tax and insurance. Lenders typically want that to be under 28% of income, which works out to roughly $245,000 a year (the median household here earns $93,528).