In Woodbury County, Iowa, which covers part of Sioux City, we have measured 4,375 parcels on septic and 29,565 on sewer. That is a county measurement. We do not hold a septic count for Sioux City on its own and this page does not estimate one. Sioux City also extends into Plymouth County, which are reported separately below and are not included in that figure.
Sioux City is a city in Woodbury and Plymouth Counties, Iowa. The Census Bureau puts its internal point at 42.49538, -96.389495 and its land area at 59.15 square miles. Septic permitting and record keeping happen at the county level, not the city level, which is why every figure below is attributed to the county and linked back to the county page it came from.
| County | Records we hold | Parcels on septic | Parcels on sewer | County records portal | Searchable without an account |
|---|---|---|---|---|---|
| Woodbury County | 230 | 4,375 | 29,565 | county portal | no account needed |
| Plymouth County | 160 | 4,394 | 6,512 | county portal | no account needed |
Our collection for Woodbury County, Iowa is small, at 230 septic records. Treat it as a starting point for a Sioux City property rather than a search that settles the question. The county is predominantly sewered: only 4,375 of 33,940 classified parcels are on septic. Septic properties near Sioux City are the exception, which is exactly why owners often do not know they have one. The county publishes a records portal that we were able to search without creating an account, which makes checking a specific parcel something you can do yourself in a few minutes.
Septic is one subject with very different jobs inside it. These go straight to the page that does yours.
| If you are a | Go to | Because it covers |
|---|---|---|
| Homeowner | Septic pumping in Sioux City | keeping the system you have working |
| Buyer or seller | Buying or selling in Sioux City | what to pull and check before closing |
| Realtor | Buying or selling in Sioux City | the same records a seller needs on file |
| Designer or engineer | Septic design in Sioux City | design flow, tank capacity, dispersal sizing |
| Installer or contractor | Septic installation in Sioux City | site evaluation, permit sequence, inspection |
| Septic pumper | Septic pumping in Sioux City | tank access, lids and service interval |
| Inspector | Septic inspection in Sioux City | what gets checked and what a failure means |
| Land investor | Septic installation in Sioux City | whether raw land can take a system at all |
No. We measure septic and sewer at parcel level and roll it up by county. In Woodbury County, Iowa, which covers part of Sioux City, we have measured 4,375 parcels on septic and 29,565 on sewer. That is a county measurement. We do not hold a septic count for Sioux City on its own and this page does not estimate one. Sioux City also extends into Plymouth County, which are reported separately below and are not included in that figure.
Sioux City is in Woodbury and Plymouth Counties, Iowa.
From the Census ZCTA-to-place relationship file, with the share of Sioux City’s land area that falls in each. A ZIP is not a place boundary and the two only ever partly agree, which is exactly why both pages exist.
Straight-line distance from the Census internal point of Sioux City.
Parcel Perfect generates a code-shaped septic design and as-built style drawing for a parcel from the records and site data we hold, and shows every parcel we have classified as septic or sewer on one map. Both are open to use for any parcel in Woodbury and Plymouth Counties, Iowa.