There were 170 total businesses in the county zip codes, with 33 construction businesses (19.4%) accounting for the largest proportion of these businesses. 119 businesses (70%) had fewer than five employees, and one (0.6%) had 250 or more.
The county with the largest median business size was Cascade County. Median-sized businesses in Cascade County was between five and nine.
The following table shows the median business size in all Montana counties.