In Bonneville County, Idaho, which covers Irwin, we have measured 7,431 parcels on septic and 32,524 on sewer. That is a county measurement. We do not hold a septic count for Irwin on its own and this page does not estimate one.
Irwin is a city in Bonneville County, Idaho. The Census Bureau puts its internal point at 43.403359, -111.279513 and its land area at 2.62 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 |
|---|---|---|---|---|---|
| Bonneville County | 43 | 7,431 | 32,524 | county portal | no account needed |
Our collection for Bonneville County, Idaho is small, at 43 septic records. Treat it as a starting point for a Irwin property rather than a search that settles the question. The county is predominantly sewered: only 7,431 of 39,955 classified parcels are on septic. Septic properties near Irwin 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 Irwin | keeping the system you have working |
| Buyer or seller | Buying or selling in Irwin | what to pull and check before closing |
| Realtor | Buying or selling in Irwin | the same records a seller needs on file |
| Designer or engineer | Septic design in Irwin | design flow, tank capacity, dispersal sizing |
| Installer or contractor | Septic installation in Irwin | site evaluation, permit sequence, inspection |
| Septic pumper | Septic pumping in Irwin | tank access, lids and service interval |
| Inspector | Septic inspection in Irwin | what gets checked and what a failure means |
| Land investor | Septic installation in Irwin | 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 Bonneville County, Idaho, which covers Irwin, we have measured 7,431 parcels on septic and 32,524 on sewer. That is a county measurement. We do not hold a septic count for Irwin on its own and this page does not estimate one.
Irwin is in Bonneville County, Idaho.
From the Census ZCTA-to-place relationship file, with the share of Irwin’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 Irwin.
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 Bonneville County, Idaho.