As of the 2010 census, the population of Southeast was 18,404. The town is governed by a Town Board made up of its Supervisor and four Council members. The town is in the southeast part of the county, and contains the village of Brewster within its borders. Interstate 84, Interstate 684, U.S. Route 202, US Route 6, and NY 22 are the primary routes through the town.
Farringtons Woods Trail is a 10.9 mile moderately trafficked, moderate difficulty, out and back hiking / mountain biking trail located on the border with CT that features a lake. The trail offers a number of activity options and is best used from May until September. Dogs are also able to use this trail.
The Maybrook Trailway is a paved trail stretching across Putnam and Dutchess counties in New York state. The trail travels the 23 miles through Southeast to the hamlet of Hopewell Junction in Dutchess County. Another segment of approximately five miles heads east from Brewster to Danbury, Connecticut via the East Branch Reservoir. At Hopewell Junction, it provides a seamless link to the William R. Steinhaus Dutchess Rail Trail , and onward to the Walkway over the Hudson State Park and the Hudson Valley Rail Trail in Ulster County.
Sustainable Putnam strongly encourages each of our towns to participate in either or both of the Climate Smart Community or Clean Energy Community programs. Currently, the Town of Southeast does not participate in either.