The Windsor district is one of 16 districts of the Vermont Senate. The current district plan is included in the redistricting and reapportionment plan developed by the Vermont General Assembly following the 2020 U.S. census, which applies to legislatures elected in 2022, 2024, 2026, 2028, and 2030.The Windsor district includes all of Windsor County, along with some parts of others.

As of 2016:

• Alison H. Clarkson, Democrat
• Alice Nikita, Democrat
• Richard McCormack, Democrat

2005-2006

• John F. Campbell, Democrat
• Matt Dunne, Democrat
• Peter F. Welch, Democrat

2007-2016

• John F. Campbell, Democrat
• Dick McCormack, Democrat
• Alice Nitka, Democrat

As of 2017

• Alison Clarkson, Democrat
• Dick McCormack, Democrat
• Alice Nitka, Democrat

• Andover
• Baltimore
• Barnard
• Bethel
• Bridgewater
• Cavendish
• Chester
• Hartford
• Hartland
• Ludlow
• Norwich
• Plymouth
• Pomfret
• Reading
• Rochester
• Royalton
• Sharon
• Springfield
• Stockbridge
• Weathersfield
• West Windsor
• Weston
• Windsor
• Woodstock

• Redistricting information from Vermont Legislature
• 2002 and 2012 Redistricting information from Vermont Legislature
• Map of Vermont Senate districts and statistics (PDF) 2002–2012