There were 210 total businesses in the county zip codes, with 34 construction businesses (16.2%) accounting for the largest proportion of these businesses. 151 businesses (71.9%) had fewer than five employees, and none 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.