Lattimer is a village and census-designated place (CDP) in Hazle Township, Luzerne County, Pennsylvania, United States.

[3] The Lattimer massacre took place in the village on September 10, 1897; it resulted in the deaths of at least 19 unarmed striking immigrant anthracite coal miners.

[4][5] The miners, mostly of Polish, Slovak, Lithuanian, and German ethnicity, were shot and killed by a Luzerne County sheriff's posse.

[6] The massacre was a turning point in the history of the United Mine Workers (UMW).

[7] According to the United States Census Bureau, the CDP has a total area of 0.23 square miles (0.6 km2), all land.