Yellowstone County, Montana
Yellowstone County, Montana, has 172,692 residents (July 2025 estimate). Its county seat is Billings. It uses Mountain Time and covers 2,633 sq mi (6,820 km²) of land.
- Resident population, July 2025
- 172,692
- Land area
- 2,633 sq mi (6,820 km²)
- County seat or government
- Billings
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $76,570 ± $2,657
- Median home value
- $349,500 ± $5,510
- Median rent, with utilities
- $1,131 ± $37
- Homes lived in by their owners
- 69.6% ± 1.2 points
- County type
- County
- Metro or micro area
- Billings, MT metro areaCentral county
- Water area
- 15.6 sq mi (40.5 km²)
- State
- Montana
- County code (FIPS)
- 30111
- Coordinates (central point)
- 45.936987, -108.276656
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Yellowstone County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Mountain TimeAmerica/Denver | UTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 5910247,977 people
- 5910142,250 people
- 5910535,480 people
- 5910621,417 people
- 5904412,302 people
- 590793,940 people
- 590372,336 people
- 590412,258 people
- 590632,070 people
- 590881,265 people
- 59057782 people
- 59006586 people
16 ZIP Code areas overlap Yellowstone County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
Yellowstone County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Yellowstone County, largest first
- Billings High School District137,348 people
- Billings Elementary School District119,005 people
- Laurel Elementary School District12,529 people
- Laurel High School District12,208 people
- Lockwood K-128,324 people
- Elder Grove Elementary School District5,834 people
- Shepherd High School District5,442 people
- Huntley Project K-12 Schools4,441 people
- Shepherd Elementary School District4,337 people
- Elysian Elementary School District3,790 people
- Independent Elementary School District3,106 people
- Blue Creek Elementary School District2,963 people
All 19
- Canyon Creek Elementary School District2,117 people
- Pioneer Elementary School District1,105 people
- Broadview High School District986 people
- Broadview Elementary School District927 people
- Morin Elementary School District345 people
- Custer K-12 Schools335 people
- Yellowstone Academy Elementary School District188 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Tribal areas in Yellowstone County, largest first
- Crow Reservation and Off-Reservation Trust Land6,848 people
American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Billings, Montana (city)119,434 people
- Laurel, Montana (city)7,215 people
- Lockwood, Montana (CDP)7,181 people
- Huntley, Montana (CDP)455 people
- Worden, Montana (CDP)416 people
- Shepherd, Montana (CDP)353 people
- Ballantine, Montana (CDP)262 people
- Custer, Montana (CDP)199 people
- Broadview, Montana (town)175 people
- Acton, Montana (CDP)87 people
- Nibbe, Montana (CDP)62 people
- Mountain View Colony, Montana (CDP)55 people
All 13
- Pompeys Pillar, Montana (CDP)27 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Musselshell County, Montana40 mi north
- Big Horn County, Montana52 mi southeast
- Treasure County, Montana52 mi northeast
- Golden Valley County, Montana53 mi northwest
- Stillwater County, Montana57 mi west
- Carbon County, Montana61 mi southwest
- Rosebud County, Montana79 mi east
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
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