ZIP 37866 falls in Union County, Tennessee, where we hold 6,762 parcels measured as septic county-wide and 1,198 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 37866.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Union County, Tennessee | 100% | 6,766 | 6,762 | 1,198 |
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 6,762 parcels measured as septic for Union County, Tennessee as a whole, not broken out by ZIP.
ZIP 37866 falls in Union County, Tennessee.