ZIP 38310 falls in McNairy County, Tennessee, where we hold 7,653 parcels measured as septic county-wide and 2,888 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 38310.
ZCTA 38310 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) |
|---|---|---|---|---|
| McNairy County, Tennessee | 69% | — | 7,653 | 2,888 |
| Hardin County, Tennessee | 31% | — | 9,522 | 3,162 |
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 7,653 parcels measured as septic for McNairy County, Tennessee as a whole, not broken out by ZIP.
ZIP 38310 spans 2 counties: McNairy County, Tennessee, Hardin County, Tennessee.