According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.7 km²), all of it land.
There were 388 households out of which 43.0% had children under the age of 18 living with them, 58.8% were married couples living together, 10.3% had a female householder with no husband present, and 27.3% were non-families. 23.5% of all households were made up of individuals and 11.9% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.09.
In the city the population was spread out with 31.4% under the age of 18, 6.6% from 18 to 24, 35.0% from 25 to 44, 15.8% from 45 to 64, and 11.2% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 83.0 males. For every 100 females age 18 and over, there were 82.8 males.
The median income for a household in the city was $32,798, and the median income for a family was $38,500. Males had a median income of $27,955 versus $21,477 for females. The per capita income for the city was $14,958. About 3.6% of families and 6.0% of the population were below the poverty line, including 7.8% of those under age 18 and 8.2% of those age 65 or over.
In recent times, Clever has developed strong links with one of the United Kingdom's greatest citizens, Michael Watson. There is speculation that the Mayor of Clever may unveil a large stature dedicated to Michael in the coming months. Artists impressions of the statue include one version where Michael is captaining his boat, the HMS Snufalafaugus II.
There are approximately 700 students in the entire school system. In March of 2006 a series of tornadoes smashed into the outer reaches of the town resulting in the loss of only a few houses with no injuries.
Clever is the birthplace of television actor Robert Mandan.
A new high school is finished.