Following up on my last post.....
This excerpt from an 1850's map of Kennebec County shows the various landowners of Litchfield and Litchfield Corners.
So this larger view gives you an overview of the county.
I found a lot of Smiths on this map, so I went back to my 1850's census and took a closer look.
Sure enough I found Thomas Smith Junior, Reuben Lowell's father, with his neighbors Mr. Emerson
and Mr. Hatch. That would be the area in the pinkish circle. Down in the lower left corner is Litchfield Corners where the other Smiths lived and ran a small store. That would be the light blue circle. With a little closer study, I'm sure I can identify a lot more family members.
Check here for some excellent map resources.