Yellowstone County is the most populous county in the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

Montana Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...

. As of the 2020 census, the population was 164,731. Its

county seat A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...

is Billings, the state's most populous city. Like the nearby national park, Yellowstone County is named after the

Yellowstone River The Yellowstone River is a tributary of the Missouri River, approximately long, in the Western United States. Considered the principal tributary of the upper Missouri, via its own tributaries it drains an area with headwaters across the mountain ...

which roughly bisects the county, flowing southwest to northeast. The river, in turn, was named for the yellow sandstone cliffs in what is now Yellowstone County. Yellowstone County is included in the Billings, Montana Metropolitan Statistical Area.

Geography

According to the

United States Census Bureau The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the Federal statistical system, U.S. federal statistical system, responsible for producing data about the American people and American economy, econ ...

, the county has a total area of , of which is land and (0.6%) is water.

Major highways

* * * * * * * * *

Transit

* Billings Metropolitan Transit *

Express Arrow Express, The Expresss or EXPRESS may refer to: Arts, entertainment and media Film * '' Express: Aisle to Glory'', a 1998 comedy short film featuring Kal Penn * '' The Express: The Ernie Davis Story'', a 2008 film starring Dennis Quaid * The Ex ...

Jefferson Lines Jefferson Lines (JL or JLI) is a regional intercity bus company operating in 14 states in the Midwest and the West of the United States. History The company is operated by Jefferson Partners L.P., located in Minneapolis, Minnesota. Jefferson P ...

Adjacent counties

* Musselshell County – north * Rosebud County – northeast * Treasure County – east * Big Horn County – southeast * Carbon County – southwest * Stillwater County – west *

Golden Valley County Golden Valley County is the name of two counties in the United States: *Golden Valley County, Montana Golden Valley County is a County (United States), county located in the U.S. state of Montana. As of the 2020 United States census, 2020 cens ...

– northwest

National protected areas

Nez Perce National Historical Park The Nez Perce National Historical Park is a United States National Historical Park comprising 38 sites located across the states of Idaho, Montana, Oregon, and Washington (state), Washington, which include traditional aboriginal lands of the Nez ...

(part) * Pompeys Pillar National Monument

Demographics

2020 census

As of the 2020 census there were 164,731 people living in the county.

2010 census

As of the 2010 census, there were 147,972 people, 60,672 households, and 38,367 families residing in the county. The population density was . There were 63,943 housing units at an average density of . The racial makeup of the county was 90.7% white, 4.0% American Indian, 0.6% black or African American, 0.6% Asian, 0.1% Pacific islander, 1.2% from other races, and 2.8% from two or more races. Those of Hispanic or Latino origin made up 4.7% of the population. In terms of ancestry, 32.4% were German, 14.0% were Irish, 11.3% were English, 10.0% were American, and 9.9% were Norwegian. Of the 60,672 households, 30.5% had children under the age of 18 living with them, 48.0% were married couples living together, 10.5% had a female householder with no husband present, 36.8% were non-families, and 29.7% of all households were made up of individuals. The average household size was 2.38 and the average family size was 2.94. The median age was 38.3 years. The median income for a household in the county was $48,641 and the median income for a family was $62,380. Males had a median income of $42,899 versus $30,403 for females. The per capita income for the county was $26,152. About 7.9% of families and 11.2% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including 15.6% of those under age 18 and 7.7% of those age 65 or over.

Politics

Yellowstone County is very conservative for an urban county. Its voters have been reliably Republican for the better part of a century.

Lyndon B. Johnson Lyndon Baines Johnson (; August 27, 1908January 22, 1973), also known as LBJ, was the 36th president of the United States, serving from 1963 to 1969. He became president after the assassination of John F. Kennedy, under whom he had served a ...

1964 Events January * January 1 – The Federation of Rhodesia and Nyasaland is dissolved. * January 5 – In the first meeting between leaders of the Roman Catholic and Orthodox churches since the fifteenth century, Pope Paul VI and Patria ...

landslide was the last time that the county voted for a Democratic candidate.

Communities

Cities

* Billings (county seat) * Laurel

Town

* Broadview

Census-designated places

* Acton * Ballantine * Custer * Huntley * Lockwood * Mountain View Colony * Nibbe * Pompeys Pillar *

Shepherd A shepherd is a person who tends, herds, feeds, or guards flocks of sheep. Shepherding is one of the world's oldest occupations; it exists in many parts of the globe, and it is an important part of Pastoralism, pastoralist animal husbandry. ...

* Worden

Other unincorporated communities

* Anita * Billings Heights * Bull Mountain *

Comanche The Comanche (), or Nʉmʉnʉʉ (, 'the people'), are a Tribe (Native American), Native American tribe from the Great Plains, Southern Plains of the present-day United States. Comanche people today belong to the List of federally recognized tri ...

* Hesper * Homewood Park * Indian Arrow * Newton * Osborn * Yegen

Ghost towns

* Coulson * Mossmain * Rimrock * Waco

Education

References

External links

County website
{{Coord, 45.94, -108.27, display=title, type:adm2nd_region:US-MT_source:UScensus1990 Billings metropolitan area 1883 establishments in Montana Territory Populated places established in 1883