ZIP 50629 falls in Buchanan County, Iowa, where we hold 215 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 50629 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) |
|---|---|---|---|---|
| Buchanan County, Iowa | 32% | 215 | — | — |
| Bremer County, Iowa | 29% | 271 | — | — |
| Fayette County, Iowa | 22% | 175 | — | — |
| Black Hawk County, Iowa | 16% | 347 | — | — |
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 50629 spans 4 counties: Buchanan County, Iowa, Bremer County, Iowa, Fayette County, Iowa, Black Hawk County, Iowa.