ZIP 50070 falls in Madison County, Iowa, where we hold 355 septic-related documents. We have not classified septic-versus-sewer status for this county, and we do not have a per-ZIP parcel count -- see the county page for what we hold and where the records are kept.
ZCTA 50070 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, Iowa | 40% | 355 | — | — |
| Adair County, Iowa | 28% | 61 | — | — |
| Guthrie County, Iowa | 16% | 343 | — | — |
| Dallas County, Iowa | 16% | 557 | — | — |
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 have not measured septic-versus-sewer status for this county yet.
ZIP 50070 spans 4 counties: Madison County, Iowa, Adair County, Iowa, Guthrie County, Iowa, Dallas County, Iowa.