ZIP 29403 falls in Charleston County, South Carolina, where we hold 15,685 parcels measured as septic county-wide and 129,120 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 29403.
| County | Land in this ZIP | Documents held | On septic (county) | On sewer (county) |
|---|---|---|---|---|
| Charleston County, South Carolina | 100% | — | 15,685 | 129,120 |
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 15,685 parcels measured as septic for Charleston County, South Carolina as a whole, not broken out by ZIP.
ZIP 29403 falls in Charleston County, South Carolina.