According to the United States Census Bureau, Humnoke has a total area of 0.31 square miles (0.81 km2), all land.[5] Crooked Creek, a tributary of Bayou Meto, winds past Humnoke to its west and south.
As of the census[7] of 2000, there were 280 people, 111 households, and 77 families residing in the city. The population density was 826.4 inhabitants per square mile (319.1/km2). There were 130 housing units at an average density of 383.7 per square mile (148.1/km2). The racial makeup of the city was 85.71% White, 10.36% Black or African American, 0.36% Asian, 1.79% from other races, and 1.79% from two or more races. 2.86% of the population were Hispanic or Latino of any race.
There were 111 households, out of which 36.0% had children under the age of 18 living with them, 54.1% were married couples living together, 9.9% had a female householder with no husband present, and 30.6% were non-families. 27.0% of all households were made up of individuals, and 14.4% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.10.
In the city, the population was spread out, with 28.2% under the age of 18, 6.1% from 18 to 24, 32.1% from 25 to 44, 20.0% from 45 to 64, and 13.6% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 93.1 males. For every 100 females age 18 and over, there were 95.1 males.
The median income for a household in the city was $21,528, and the median income for a family was $28,125. Males had a median income of $27,500 versus $15,750 for females. The per capita income for the city was $15,194. About 15.2% of families and 20.3% of the population were below the poverty line, including 23.5% of those under the age of 18 and 27.8% of those 65 or over.
