The Town is hereby divided into the following named districts, as described below:

The commercial area on the west side of Route 81 is bounded northerly by a point 520 feet north of Route 80 and southerly by a point 450 feet south of Stevens Road. The commercial area on the east side of Route 81 is bounded by a point 480 feet north of Route 80 and southerly by a point 600 feet south of Stevens Road. This commercial area is 340 feet deep, measured beginning 25 feet from the center line of Route 81. In addition, a commercial area encompasses land adjacent to the Route 81 and Route 80 intersection, including the triangle bounded by Route 81, Route 80, and Chittenden Road. The commercial area extends east on the south side of Route 80, beginning at its intersection with Route 81, to a point 325 feet west of Roast Meat Hill Road. The commercial area extends east on the north side of Route 80 to the west property line of the Town-owned recreation field west of Roast Meat Hill Road. This commercial area is 300 feet deep, measured beginning 25 feet from the center line of Route 80. The commercial area is divided into two zones:

The Industrial District is the area bounded north by Route 80, east by the Deep River town line, west by the easterly lot line of lot number 36B (as recorded on Assessor's Map 34, revised May 5, 1978), and south by a line 300 feet south of Route 80.

All the remainder is Rural Residence District.

In addition to the districts into which the Town is divided under § 500-6, there is hereby created an overlay district designated the Floodplain District. The special flood hazard areas (SFHA) identified by the Federal Emergency Management Agency (FEMA) in its Flood Insurance Study (FIS) for the Town of Killingworth, dated August 28, 2008, and accompanying Flood Insurance Rate Maps (FIRM) and/or Flood Boundary and Floodway Maps (FBFM), dated August 28, 2008, and other supporting data, and any subsequent revisions thereto, are adopted by reference and declared to be a part of this regulation. Since mapping is legally adopted by reference into this regulation it must take precedence when more restrictive until such time as a map amendment or map revision is obtained from FEMA. The SFHA includes any area shown on the FIRM as Zones A, A1-30, AE, AO, and AH, including areas designated as a floodway on a FIRM or FBFM. Said district designation is in addition to and superimposed upon those districts into which said area is divided under § 500-6. Except as otherwise provided herein, the prohibitions, limitations and restrictions prescribed in Article XV are in addition to the prohibitions, limitations and restrictions upon land use otherwise prescribed in these Zoning Regulations.