Otis is a Statutory Town in Washington County, Colorado, United States. The population was 534 at the 2000 census.HistoryOtis was established in 1882 as a construction campsite for workers building the Burlington & Missouri River rail line from Lincoln Nebr to Denver, Colo. According to tradition, the community was named after W. O. Otis, a pioneer settler. The post office opened in 1886 and the town was platted in 1887.GeographyOtis is located at .According to the United States Census Bureau, the town has a total area of 0.4sqmi, all of it land.DemographicsAs of the census of 2000, there were 534 people, 218 households, and 146 families residing in the town. The population density was 1,304.8 people per square mile (502.9/km²). There were 248 housing units at an average density of 606.0 per square mile (233.5/km²). The racial makeup of the town was 97.57% White, 0.19% Native American, 1.69% from other races, and 0.56% from two or more races. Hispanic or Latino of any race were 3.00% of the population.There were 218 households out of which 33.5% had children under the age of 18 living with them, 53.7% were married couples living together, 9.2% had a female householder with no husband present, and 33.0% were non-families. 30.3% of all households were made up of individuals and 15.6% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 3.03.