Gas is a city in Allen County, Kansas, United States.

[4] The city was named for the abundant natural gas that was found in the area.

Taylor sold 60 acres (24 ha) of his farm to some spelter companies and in October sub-divided the remainder into lots, which was the beginning of "Gas City".

The place grew rapidly, the cheap fuel afforded by the immense supply of natural gas bringing in a number of large manufacturing plants of various kinds.

In 1910 the population was 1,281, and the city had a bank, a daily and a weekly newspaper, an opera house, an international money order postoffice (first opened in August 1899[6]) from which mail was distributed to the surrounding country by rural free delivery, several good mercantile houses, telegraph and express offices.

According to the United States Census Bureau, the city has a total area of 0.73 square miles (1.89 km2), all of it land.

[8] The 2020 United States census counted 475 people, 193 households, and 124 families in Gas.

There were 219 housing units at an average density of 304.2 per square mile (117.4/km2).

30.1% of households consisted of individuals and 14.5% had someone living alone who was 65 years of age or older.

23.1% of all households were made up of individuals, and 13.9% had someone living alone who was 65 years of age or older.

20.7% of all households were made up of individuals, and 7.8% had someone living alone who was 65 years of age or older.