[3] Greenfield includes the geographically and culturally distinct sub-neighborhood of Four Mile Run, also known as Rusyn Valley.

In 1768, a large tract of woodland was purchased for $10,000 under the Treaty of Fort Stanwix made with the Native Americans.

By the late 1800s, many of Greenfield's residents were of Irish, Polish, Slovak, Italian, Hungarian, and Carpatho-Rusyn descent.

A neighborhood with uneven and hilly topography, Greenfield has 26 distinct flights of city steps - many of which are open and in a safe condition.

In Greenfield, the Steps of Pittsburgh quickly connect pedestrians to public transportation, business districts, and playgrounds and provide an easy way to travel through this hilly, densely populated area.