Attica is a city in Harper County, Kansas, United States.

[4] Land for the community was purchased in late June 1884 and became the end of the Atchison, Topeka, and Santa Fe Railway.

The population grew further until the Cherokee Outlet in northern Oklahoma was opened by a Land run in 1893, at which point many people moved south to that territory.

[5] Most of Attica is in Section 3 of Township 32 South of Range 9 West (S3-T32S-R9W) of the 6th Principal Meridian.

[5] On May 12, 2004, the town was damaged by an F2 tornado that was received widespread coverage on local and national television.

[6] According to the United States Census Bureau, the city has a total area of 0.64 square miles (1.66 km2), all of it land.

[7] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

[8] The 2020 United States census counted 516 people, 218 households, and 127 families in Attica.

38.5% of households consisted of individuals and 18.8% had someone living alone who was 65 years of age or older.

32.9% of all households were made up of individuals, and 18.7% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 98.58% White, 0.94% Native American, 0.16% Asian, 0.16% Pacific Islander, and 0.16% from two or more races.

The community is served by Attica USD 511 public school district.