ZIP 37030 falls in Smith County, Tennessee, where we hold 6,124 parcels measured as septic county-wide and 2,092 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 37030.
ZCTA 37030 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) |
|---|---|---|---|---|
| Smith County, Tennessee | 100% | — | 6,124 | 2,092 |
| Jackson County, Tennessee | 0% | 6,653 | 4,567 | 400 |
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 6,124 parcels measured as septic for Smith County, Tennessee as a whole, not broken out by ZIP.
ZIP 37030 spans 2 counties: Smith County, Tennessee, Jackson County, Tennessee.