10 Counties with the Highest Property Tax Rates in Montana

If you are comparing property taxes across Montana, these 10 counties have the highest effective rates in the state. The highest-rate county, Blaine County, comes in at 1.52% — 0.77% higher than the Montana average (0.75%). The statewide effective rate is 0.75%.

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#CountyEffective RateMedian TaxMedian Home Value
1Blaine County1.52%$1,901$124,900
2Sheridan County1.29%$1,436$111,600
3Roosevelt County1.29%$1,535$119,400
4Dawson County1.17%$2,199$187,400
5Valley County1.10%$2,185$198,600
6Custer County1.10%$2,242$204,200
7Hill County1.08%$2,026$187,600
8Silver Bow County1.05%$2,357$223,500
9Liberty County1.03%$1,204$116,800
10Big Horn County1.00%$1,482$148,200

How this ranking is calculated

The effective property tax rate is the median annual property tax paid divided by the median home value in each county, expressed as a percentage. It is the most practical way to compare property tax burden between counties because it neutralizes differences in home values.

Counties with the highest rates in Montana often share a few characteristics: lower home values and/or higher millage rates driven by school and local service funding needs.

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