Over time, there have been over 24 differently named post offices in Gallatin County.  Some of these are the result of a town changing its name; most are not.  The fact that a place had a post office should not be interpreted to mean it was actually a town, as you and I think of it today: it may well have been somebody’s general store, with a stack of mail on a shelf and a little box of stamps off to the side.  And in any given community, it may have changed location based on the politics of the most recent election.

The peak in Gallatin County was in 1903-04, when there were 11 post offices open at the same time.  Ryle, Brashear, and Munk P.O.'s closed in the 1930's leaving Gallatin with the three Post Offices it has open today. The consolidation between 1900 and 1915, however, was rapid. 

The USPS has a web site here, that lists every postmaster in the history of some, current post offices.  As of this writing in summer of 2006, Warsaw, Glencoe, and Sparta are only partially listed.

Here’s a chart that will give you a vague idea of how many post offices were open in any given year between the first (Fredericksburgh, and Saunders Mill, both in 1816) and now.  Keep in mind that Carroll Co., which used to be part of Gallatin, wasn't created until 1838, so some of these PO's were likely in what is now Carroll County.