| County: | Judith Basin County |
| State: | Montana |
| Founded Year: | 1920 |
| Founded Date: | December 10 |
| Seat Wl: | Stanford |
| Largest City Wl: | Stanford |
| City Type: | town |
| Area Total Sq Mi: | 1871 |
| Area Land Sq Mi: | 1870 |
| Area Water Sq Mi: | 0.8 |
| Area Percentage: | 0.04 |
| Population As Of: | 2020 |
| Population Total: | 2023 |
| Pop Est As Of: | 2022 |
| Population Est: | 2105 |
| Population Density Sq Mi: | 1.0 |
| Web: | www.co.judith-basin.mt.us |
| Ex Image: | Judith Basin County Courthouse July 2020.jpg |
| Ex Image Cap: | Judith Basin County Courthouse in Stanford |
| District: | 2nd |
| Time Zone: | Mountain |
| Footnotes: |
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Judith Basin County is a county in the U.S. state of Montana. As of the 2020 census, the population was 2,023.[1] Its county seat is the town of Stanford.[2]
Judith Basin County was formed of area taken from western Fergus and eastern Cascade counties on December 10, 1920.[3] [4] In 1895, Yogo sapphires were discovered at Yogo Gulch, about 15 miles southwest of Utica, which at the time was in Fergus County.
According to the United States Census Bureau, the county has a total area of, of which is land and (0.04%) is water.[5]
This small county strongly leans Republican; a Democrat has not won this county in a Presidential race since Lyndon Johnson's landslide win in 1964.
As of the 2020 census, there were 2,023 people living in the county.
As of the 2010 census, there were 2,072 people, 924 households, and 600 families in the county. The population density was . There were 1,336 housing units at an average density of . The racial makeup of the county was 98.3% white, 0.8% American Indian, 0.1% Asian, 0.1% from other races, and 0.7% from two or more races. Those of Hispanic or Latino origin made up 1.2% of the population. In terms of ancestry, 30.9% were German, 16.7% were English, 16.1% were Irish, 10.3% were Norwegian, 6.7% were Czech, 5.0% were Danish, and 1.7% were American.
Of the 924 households, 24.0% had children under the age of 18 living with them, 55.7% were married couples living together, 5.2% had a female householder with no husband present, 35.1% were non-families, and 30.3% of all households were made up of individuals. The average household size was 2.24 and the average family size was 2.80. The median age was 48.3 years.
The median income for a household in the county was $41,473 and the median income for a family was $54,479. Males had a median income of $36,295 versus $29,750 for females. The per capita income for the county was $24,029. About 6.4% of families and 9.9% of the population were below the poverty line, including 8.9% of those under age 18 and 9.0% of those age 65 or over.