ZIP 37321 falls in Rhea County, Tennessee, where we hold 8,798 parcels measured as septic county-wide and 3,467 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 37321.
ZCTA 37321 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) |
|---|---|---|---|---|
| Rhea County, Tennessee | 95% | 2,754 | 8,798 | 3,467 |
| Bledsoe County, Tennessee | 5% | 2,835 | 4,385 | 834 |
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 8,798 parcels measured as septic for Rhea County, Tennessee as a whole, not broken out by ZIP.
ZIP 37321 spans 2 counties: Rhea County, Tennessee, Bledsoe County, Tennessee.