Oldham County lies northeast of the best known of these areas, Anchorage, just outside Louisville's pre-merger East End.

When the Louisville and Frankfort Railroad Company introduced rail lines in the area in the 1850s, many new towns and communities sprang up.

[citation needed] Since the early 1970s and the completion of Interstate 71, which connects Oldham County to Downtown Louisville and shopping in Eastern Jefferson County, Oldham County has increasingly become suburban in nature, a natural extension of Louisville's wealthy East End as it ran out of large tracts of undeveloped land.

The county's northern border with Indiana is formed by the Ohio River.

[citation needed] 2006 classes at Oldham County High School were reported as to have a teacher:student ratio of 1:15, but that number does not accurately reflect the ratio of a normal class.

[citation needed] That number includes, for example, the small classes of five to six students in Behavioral Disorders.

[citation needed] The published ratio also includes small classes at the County Career Center, which is located on the same campus.

Regardless of population swelling and diminishing student-teacher ratios, which have led to a slight decline as of late, Oldham county is still widely recognized as the best public school system in the state.