Saint Clair Township, Butler County

Saint Clair Township, Butler County

Township · Butler County · 4,460 residents

Butler County

The story

Local history for this place is being researched county by county outward from Franklin County; here is what the records say.

Water

Four wells on a 100-acre district wellfield over the Great Miami valley aquifer, St. Clair Twp, north of Hamilton The water here

Hamilton Public Water System40% of residentsGreat Miami Buried Valley Aquifer (wells)
Butler Co. Water District 232% of residentsHamilton wells (Great Miami aquifer) + Cincinnati (Ohio River + wells)
Southwest Regional Water District19% of residentsGreat Miami Buried Valley Aquifer (wells)
Trenton City7% of residentsGreat Miami River Buried Valley Aquifer (wells)
New Miami Village2% of residentsGroundwater wells (3 wells)
Fairfield City0% of residentsGreat Miami Buried Valley Aquifer (wells)
Cincinnati Public Water System0% of residentsOhio River (Miller Plant, ~88%) plus Great Miami Buried Valley Aquifer wells (~12%)

Its ZIP codes

Each ZIP code that touches Saint Clair Township, Butler County, with the share of its residents who live here and the same headline figures as the ZIP page.

The ZIP codes serving Saint Clair Township, Butler County
ZIP	Share	Water	Radon	Home value	Schools	Flood
45055 Saint Clair Township and Overpeck	100%	Four wells on a 100-acre district wellfield over the Great Miami valley aquifer, St. Clair Twp, north of Hamilton	8.4 pCi/L average radon	Median year built 1948	New Miami Local · 3 stars overall	0.0% of residents in the 1% floodplain
45013 Hamilton	3%	Great Miami Buried Valley Aquifer, drawn from 16 production wells scattered through the City of Fairfield along the Great Miami River (river-induced infiltration), treated at the plant on River Road in Fairfield	4.4 pCi/L average radon	Median year built 1962	Hamilton City · 3 stars overall	2.2% of residents in the 1% floodplain
45011 Liberty Township and Hamilton	3%	Great Miami Buried Valley Aquifer, drawn from 16 production wells scattered through the City of Fairfield along the Great Miami River (river-induced infiltration), treated at the plant on River Road in Fairfield	4.3 pCi/L average radon	Median year built 1994	Lakota Local · 4.5 stars overall	2.3% of residents in the 1% floodplain
45067 Trenton	2%	Great Miami River Buried Valley Aquifer (wells)	9.2 pCi/L average radon	Median year built 1995	Edgewood City · 3 stars overall	1.3% of residents in the 1% floodplain

The county

Butler County: 13 ZIP codes, 22 cities, villages and townships, 382,868 people.

Nearby places

Hamilton Liberty Township, Butler County Fairfield Township, Butler County Trenton Hanover Township, Butler County Ross Township, Butler County West Chester Township, Butler County Morgan Township, Butler County Wayne Township, Butler County New Miami

Cite this page as:

Cracked Buckeye (Open Shower Co), "Saint Clair Township, Butler County", https://crackedbuckeye.com/place/saint-clair-township-butler-county/, built 2026-09-16, accessed [date].

Machine-readable: /api/place/saint-clair-township-butler-county.json (open JSON, CC BY 4.0 for the compilation; the underlying records keep their own terms) · How to cite · Report a correction · Built 2026-09-16