ZIP 37186 falls in Sumner County, Tennessee, where we hold 23,291 parcels measured as septic county-wide and 40,273 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 37186.
ZCTA 37186 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) |
|---|---|---|---|---|
| Sumner County, Tennessee | 54% | — | 23,291 | 40,273 |
| Macon County, Tennessee | 46% | — | 6,954 | 2,539 |
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 23,291 parcels measured as septic for Sumner County, Tennessee as a whole, not broken out by ZIP.
ZIP 37186 spans 2 counties: Sumner County, Tennessee, Macon County, Tennessee.