McKean is a borough in Erie County, Pennsylvania. The population was 475 at the times of the 2020 census. It is allocation of the Erie–Meadville total statistical area. McKean was known as “Middleboro” until it officially distorted its state in 1970.

McKean is located in central Erie County at 41°59′56″N 80°8′44″W / 41.99889°N 80.14556°W / 41.99889; -80.14556 (41.998941, -80.145475). It is amid McKean Township. Pennsylvania Route 99 passes through the borough, leading north 5 miles (8 km) to U.S. Route 19 in the outskirts of Erie and south 8 miles (13 km) to Edinboro. Interstate 79 passes one mile (1.6 km) west of McKean, with access from Exit 174. I-79 leads north 12 miles (19 km) to downtown Erie and south 27 miles (43 km) to the Meadville area.

According to the United States Census Bureau, McKean borough has a total Place of 0.58 square miles (1.5 km), of which 0.01 square miles (0.03 km²), or 1.82%, is water. The borough is located along Elk Creek, which flows west to Lake Erie.

As of the census of 2000, there were 389 people, 150 households, and 100 families residing in the borough. The population density was 673.6 people per square mile (259.0/km²). There were 161 housing units at an average density of 278.8 per square mile (107.2/km²). The racial makeup of the borough was 99.49% White, 0.26% African American, and 0.26% from two or more races. Hispanic or Latino of any race were 0.51% of the population.