ZIP 45042 falls in Butler County, Ohio, where we hold 1 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 45042 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) |
|---|---|---|---|---|
| Butler County, Ohio | 92% | 1 | — | — |
| Preble County, Ohio | 7% | 57 | — | — |
| Montgomery County, Ohio | 1% | — | — | — |
| Warren County, Ohio | 1% | 61 | — | — |
1 businesses on record with an address in this ZIP: pumping, installation, design, inspection and repair. Not an endorsement, and we take no fee.
| Company | City | Phone | Rating |
|---|---|---|---|
| Bayley's Septic Service & Maintenance | Middletown | (513) 393-0525 | — |
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 45042 spans 4 counties: Butler County, Ohio, Preble County, Ohio, Montgomery County, Ohio, Warren County, Ohio.