Built in 1855 in the Greek Revival style, it was the town's post office for over 100 years, and served for a time thereafter as the local historical society museum.

The former Grafton Post Office is located on the east side of Grafton village, on the north side of Main Street (Vermont Route 121), just west of its junction with Chester Road (Vermont Route 35).

The post office is a small single-story wood frame structure, with a front-facing gable roof, clapboard siding, and a fieldstone foundation.

Trim consists of simple corner boards and short gable returns.

[2] The post office was built in 1855 for the town's third postmaster, and served in that capacity until 1958.