ZIP 05143 falls in Windsor County, Vermont, where we hold 15,734 parcels measured as septic county-wide and 6,829 on sewer. We do not have a per-ZIP parcel count for this county, so this is the county total, not a count specific to ZIP 05143.
ZCTA 05143 is not entirely inside one county. Land-area share is from the 2020 Census ZCTA-to-county relationship file.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Windsor County, Vermont | 77% | 46,584 | 15,734 | 6,829 |
| Windham County, Vermont | 23% | 34,784 | 14,564 | 5,090 |
Land-area overlap is from the 2020 Census Bureau ZCTA5-to-county relationship file, not an estimate of ours. Parcel and document counts are rows we hold, not a survey of every property in the ZIP. Last verified 2026-09-01.
We hold 15,734 parcels measured as septic for Windsor County, Vermont as a whole, not broken out by ZIP.
ZIP 05143 spans 2 counties: Windsor County, Vermont, Windham County, Vermont.