Montana acreage, unknown?

I have a Section in Richland County, Montana. The acreage is not stated. How would I find out how many acres are in that particular Section?

Patrick:

I believe a Section is usually 640 acres. If you are referring to net mineral acres owned in a Section, that information would be on record at the County Clerk’s office in Richland County.

I believe each section contains 640 acres. I could be wrong, but there was something on the internet that stated how many acres.