US > Montana > Yellowstone County > Billings, MT 59101

59101 ZIP Code Profile, Map, Data & Demographics

Related Place Profiles:
Billings, MT | Lockwood, MT
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ZIP Code 59101: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Billings, MT 59101

Not Acceptable, USPS
Lockwood, MT 59101

  • ZIP Code Type: STANDARD
  • County: Yellowstone County
  • Centroid: Latitude 45.775, Longitude -108.48
  • Time Zone: Mountain Time Zone (UTC -7 hours)
  • Observes DST: Yes

ZIP Code 59101 has segments in 3 Counties (Beaverhead, Big Horn, Yellowstone).

  • Businesses Addresses: 2,408
  • PO Box Addresses: 0
  • Residential Addresses: 18,485
    • Multi-Family Addresses: 932
    • Single Family Addresses: 17,553

The ZIP Code maps and database are updated 4 times per year.
Database updated: June 1, 2025, Maps updated: May 1, 2024.

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Billings, MT 59101 Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 43,210 (100%)
Population in Households 41,300 (95.6%)
Population in Families 29,599 (68.5%)
Population in Group Quarters1 1,910 ( 4.4%)
Population Density 73
Diversity Index2 48
 
 

INCOME

Median Household Income $58,893
Average Household Income $79,205
% of Income for Mortgage4 39%
Per Capita Income $33,289
Wealth Index5 56
Socioeconomic Status Index6 Moderate (46.0)
 

HOUSING

Total HU (Housing Units) 19,415 (100%)
Owner Occupied HU 10,461 (53.9%)
Renter Occupied HU 7,557 (38.9%)
Vacant Housing Units 1,397 ( 7.2%)
Median Home Value $368,897
Average Home Value $424,860
Housing Affordability Index3 59
 

HOUSEHOLDS

Total Households 18,018
Average Household Size 2.29
Family Households 9,578
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

 2020-2025 2025-2030
Population 0.78% 0.63%
Households 0.72% 0.60%
Families   0.36%
Median Household Income   2.61%
Per Capita Income   2.48%
Owner Occupied HU   1.05%

Billings, MT 59101 - Peer Comparisons by Rank and Percentile

The table below compares 59101 to the other 370 ZIP Codes in Montana by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 4 99th
Population Density # 43 89th
Median Household Income # 251 32nd
Housing Affordability Index # 172 46th
Per Capita Income # 249 33rd
Diversity Index # 28 93rd

Additional comparisons and rankings can be made with a VERY EASY TO USE Montana Census Data Comparison Tool.


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