The Union Street–Academy Hill Historic District makes up most of downtown Montgomery, New York, United States.

It abuts the smaller Bridge Street Historic District to the northwest.

The district has been on the National Register of Historic Places since November 21, 1980.

The 300-acre (1.2 km2) rectangle-shaped historic district contains 83 buildings, many of them houses that date to the early and mid-19th century and exemplify popular contemporary architectural styles.

[2] The centerpiece of the historic district is the Village Hall, the former Montgomery Academy, which dates to the 1830s.