ZIP 37821 falls in Cocke County, Tennessee, where we hold 11,750 parcels measured as septic county-wide and 2,779 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 37821.
ZCTA 37821 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) |
|---|---|---|---|---|
| Cocke County, Tennessee | 100% | 4,278 | 11,750 | 2,779 |
| Jefferson County, Tennessee | 0% | 1 | 17,552 | 4,709 |
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 11,750 parcels measured as septic for Cocke County, Tennessee as a whole, not broken out by ZIP.
ZIP 37821 spans 2 counties: Cocke County, Tennessee, Jefferson County, Tennessee.