ZIP 71720 falls in Ouachita County, Arkansas, where we hold 2,999 parcels measured as septic county-wide and 2,876 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 71720.
ZCTA 71720 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) |
|---|---|---|---|---|
| Ouachita County, Arkansas | 54% | — | 2,999 | 2,876 |
| Dallas County, Arkansas | 40% | — | 1,320 | 1,624 |
| Calhoun County, Arkansas | 6% | — | 1,513 | 534 |
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 2,999 parcels measured as septic for Ouachita County, Arkansas as a whole, not broken out by ZIP.
ZIP 71720 spans 3 counties: Ouachita County, Arkansas, Dallas County, Arkansas, Calhoun County, Arkansas.