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.

BillingsMissoulaGreat Falls
Yellowstone County in Montana
Golden Valley CountyStillwater CountyTreasure CountyBillingsLaurelHuntleyWorden
Yellowstone County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
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 zoneLocal time and UTC offsetNext clock change
Mountain TimeAmerica/DenverUTC-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

  1. 5910247,977 people
  2. 5910142,250 people
  3. 5910535,480 people
  4. 5910621,417 people
  5. 5904412,302 people
  6. 590793,940 people
  7. 590372,336 people
  8. 590412,258 people
  9. 590632,070 people
  10. 590881,265 people
  11. 59057782 people
  12. 59006586 people
All 16
  1. 59015394 people
  2. 59024335 people
  3. 59002221 people
  4. 59064211 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

  1. Billings High School District137,348 people
  2. Billings Elementary School District119,005 people
  3. Laurel Elementary School District12,529 people
  4. Laurel High School District12,208 people
  5. Lockwood K-128,324 people
  6. Elder Grove Elementary School District5,834 people
  7. Shepherd High School District5,442 people
  8. Huntley Project K-12 Schools4,441 people
  9. Shepherd Elementary School District4,337 people
  10. Elysian Elementary School District3,790 people
  11. Independent Elementary School District3,106 people
  12. Blue Creek Elementary School District2,963 people
All 19
  1. Canyon Creek Elementary School District2,117 people
  2. Pioneer Elementary School District1,105 people
  3. Broadview High School District986 people
  4. Broadview Elementary School District927 people
  5. Morin Elementary School District345 people
  6. Custer K-12 Schools335 people
  7. 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

  1. 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.

  1. Billings, Montana (city)119,434 people
  2. Laurel, Montana (city)7,215 people
  3. Lockwood, Montana (CDP)7,181 people
  4. Huntley, Montana (CDP)455 people
  5. Worden, Montana (CDP)416 people
  6. Shepherd, Montana (CDP)353 people
  7. Ballantine, Montana (CDP)262 people
  8. Custer, Montana (CDP)199 people
  9. Broadview, Montana (town)175 people
  10. Acton, Montana (CDP)87 people
  11. Nibbe, Montana (CDP)62 people
  12. Mountain View Colony, Montana (CDP)55 people
All 13
  1. Pompeys Pillar, Montana (CDP)27 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Musselshell County, Montana40 mi north
  2. Big Horn County, Montana52 mi southeast
  3. Treasure County, Montana52 mi northeast
  4. Golden Valley County, Montana53 mi northwest
  5. Stillwater County, Montana57 mi west
  6. Carbon County, Montana61 mi southwest
  7. 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.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.