ZIP 72721 falls in Madison County, Arkansas, where we hold 6,853 parcels measured as septic county-wide and 1,006 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 72721.
ZCTA 72721 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) |
|---|---|---|---|---|
| Madison County, Arkansas | 52% | — | 6,853 | 1,006 |
| Franklin County, Arkansas | 48% | — | 5,041 | 2,666 |
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 6,853 parcels measured as septic for Madison County, Arkansas as a whole, not broken out by ZIP.
ZIP 72721 spans 2 counties: Madison County, Arkansas, Franklin County, Arkansas.