McAdoo is a borough and coal town in Schuylkill County, Pennsylvania, United States, 5 miles (8.0 km) south of Hazleton and seven miles north of Tamaqua. McAdoo contains the picturesque Silver Brook Meadow. In the past, anthracite coal mining and a shirt factory, the McAdoo Manufacturing Company, provided gainful employment to the populace. The population was 2,477 at the 2020 census.

According to the United States Census Bureau, the borough has a total area of 0.3 square miles (0.78 km), all land. McAdoo’s elevation is 1700 feet above sea level. It is on the crest of Broad Mountain and straddles the divide in the company of the Delaware and Susquehanna watersheds. Pennsylvania Route 309 (Kennedy Drive) is the main north-to-south thoroughfare. Interstate 81 runs a quick distance west of town and parallel to PA 309. The two routes have an right of entry highway connecting them just south of McAdoo at exit 138 of I-81. McAdoo has a warm-summer humid continental climate (Dfb) and the hardiness zone is 6a. Average monthly temperatures range from 23.5 °F in January to 70.1 °F in July.

At the 2000 census there were 2,274 people, 1,034 households, and 617 families residing in the borough. The population density was 6,916.7 people per square mile (2,660.6/km). There were 1,211 housing units at an average density of 3,683.4 per square mile (1,416.9/km²). The racial makeup of the borough was 99.47% White, 0.09% African American, 0.04% Native American, 0.04% Asian, 0.31% from further races, and 0.04% from two or more races. Hispanic or Latino of any race were 0.66%.

The most common ancestries in McAdoo are Polish (15.5%), Italian (14.1%), Slovak (10.6%), Irish (7.8%), and Greek (5.0%)