Saco is a town in Phillips County, Montana, United States. The population was 197 at the 2010 census.
Saco is located at 48°27′27″N 107°20′31″W / 48.45750°N 107.34194°W / 48.45750; -107.34194 (48.457557, -107.342030).
According to the United States Census Bureau, the town has a total area of 0.33 square miles (0.85 km), all of it land.
As of the census of 2010, there were 197 people, 102 households, and 47 families residing in the town. The population density was 597.0 inhabitants per square mile (230.5/km). There were 127 housing units at an average density of 384.8 per square mile (148.6/km). The racial makeup of the town was 94.4% White, 1.0% Asian, and 4.6% from two or more races. Hispanic or Latino of any race were 0.5% of the population.
There were 102 households of which 24.5% had children under the age of 18 living with them, 39.2% were married couples living together, 4.9% had a female householder with no husband present, 2.0% had a male householder with no wife present, and 53.9% were non-families. 47.1% of all households were made up of individuals and 23.6% had someone living alone who was 65 years of age or older. The average household size was 1.93 and the average family size was 2.83.
The median age in the town was 48.1 years. 21.3% of residents were under the age of 18; 2.1% were between the ages of 18 and 24; 22.4% were from 25 to 44; 33% were from 45 to 64; and 21.3% were 65 years of age or older. The gender makeup of the town was 50.3% male and 49.7% female.
As of the census of 2000, there were 224 people, 109 households, and 57 families residing in the town. The population density was 683.9 people per square mile (262.1/km²). There were 135 housing units at an average density of 412.2 per square mile (158.0/km²). The racial makeup of the town was 96.43% White, 1.79% Native American, and 1.79% from two or more races.
There were 109 households out of which 23.9% had children under the age of 18 living with them, 41.3% were married couples living together, 8.3% had a female householder with no husband present, and 46.8% were non-families. 44.0% of all households were made up of individuals and 22.9% had someone living alone who was 65 years of age or older. The average household size was 2.06 and the average family size was 2.84.
In the town, the population was spread out with 23.7% under the age of 18, 3.6% from 18 to 24, 26.3% from 25 to 44, 24.6% from 45 to 64, and 21.9% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 98.2 males. For every 100 females age 18 and over, there were 94.3 males.
The median income for a household in the town was $23,125, and the median income for a family was $26,667. Males had a median income of $23,125 versus $24,375 for females. The per capita income for the town was $16,421. About 14.3% of families and 14.0% of the population were below the poverty line, including 22.0% of those under the age of eighteen and 13.2% of those sixty five or over.