ZIP 28657 falls in Avery County, North Carolina, where we hold 1 parcels measured as septic county-wide and 0 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 28657.
ZCTA 28657 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) |
|---|---|---|---|---|
| Avery County, North Carolina | 84% | 4,552 | 1 | 0 |
| Burke County, North Carolina | 15% | 8 | — | — |
| McDowell County, North Carolina | 1% | — | — | — |
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 1 parcels measured as septic for Avery County, North Carolina as a whole, not broken out by ZIP.
ZIP 28657 spans 3 counties: Avery County, North Carolina, Burke County, North Carolina, McDowell County, North Carolina.