59058 ZIP Code — Mosby, MT
Garfield County, Montana
ZIP code 59058 is located in Mosby, Montana, within Garfield County. It covers approximately 618.80 square miles and serves a population of 22 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 406.
22
population
618.80
sq mi land
Standard
ZIP type
Mountain (MT)
timezone
59058 ZIP code map
Cities in ZIP code 59058
Below are the cities the US Postal Service accepts for ZIP code 59058. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Mosby | Acceptable |
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 22 |
| Population density | 0 / sq mi |
| State FIPS | 30 |
| County FIPS | 033 |
| Geography | |
|---|---|
| Land area | 618.80 sq mi |
| Water area | 0.32 sq mi |
| Latitude | 46.9453 |
| Longitude | -107.7947 |
| Timezone | Mountain (MT) |
| Area code | 406 |
Total population by age
Gender
Race & ethnicity
Economics
updated 06/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 66.7% | 53.8% | 44.2% |
| $50k – $100k | 33.3% | 28.5% | 32.0% |
| $100k – $200k | 0.0% | 12.7% | 19.2% |
| Over $200k | 0.0% | 5.0% | 4.7% |
Demographics & statistics
22
Population
55.7
Median age
$16,875
Median household income
$9,391
Per capita income
$0
Median home value
$0
Median monthly rent
100.0%
Home ownership
40.9%
Poverty rate
0.0%
Unemployment
22
Housing units
13.6%
Bachelor's or higher
Age distribution
Male
Female
2
25–34
3
1
45–54
3
1
55–59
2
1
60–64
1
2
65–74
5
0
85+
1
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 0 | 0.0% |
| 18 and over | 22 | 100.0% |
| 65 and over | 8 | 36.4% |
| Median age | 55.7 years | |
Race & ethnicity
White
100%
| Group | Count | % |
|---|---|---|
| White | 22 | 100% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 66.7% | 53.8% | 44.2% |
| $50k – $100k | 33.3% | 28.5% | 32.0% |
| $100k – $200k | 0.0% | 12.7% | 19.2% |
| Over $200k | 0.0% | 5.0% | 4.7% |
$10k–$15k
33.3%
$15k–$25k
44.4%
$25k–$35k
11.1%
$35k–$50k
11.1%
| Range | % of households |
|---|---|
| $10k–$15k | 33.3% |
| $15k–$25k | 44.4% |
| $25k–$35k | 11.1% |
| $35k–$50k | 11.1% |
| Median income | $16,875 |
Housing
Home values
$50k–$100k
33.3%
$100k–$150k
22.2%
$300k–$500k
44.4%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $0 |
| Median rent / month | $0 |
| Owner occupied | 100.0% |
| Renter occupied | 0.0% |
| Vacant | 59.1% |
| Single-family detached | 86.4% |
| Large apartment buildings | 0.0% |
| Mobile homes | 13.6% |
| Median rooms | 4.5 |
| Avg household size (owned) | 2.44 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 13.6% |
| 1990–1999 | 18.2% |
| 1980–1989 | 27.3% |
| 1970–1979 | 13.6% |
| 1960–1969 | 18.2% |
| 1950–1959 | 4.5% |
| 1940–1949 | 4.5% |
| 1939 or earlier | 0.0% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 9.1% |
| 1 bedroom | 0.0% |
| 2 bedrooms | 54.5% |
| 3 bedrooms | 18.2% |
| 4 bedrooms | 18.2% |
| 5+ bedrooms | 0.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 11.1% |
| 2 vehicles | 22.2% |
| 3 or more | 66.7% |
Heating fuel
| Fuel type | % |
|---|---|
| Propane / LP gas | 22.2% |
| Wood | 55.6% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 8 | 88.9% |
| Cohabiting couple | 1 | 11.1% |
| Male householder, no spouse | 0 | 0.0% |
| Female householder, no spouse | 0 | 0.0% |
| Households with children under 18 | 0 | 0.0% |
| Households with seniors (65+) | 4 | 44.4% |
| Average household size | 2.44 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 0.0% | 33.3% |
| Married | 85.7% | 60.0% |
| Separated | 0.0% | 0.0% |
| Widowed | 0.0% | 0.0% |
| Divorced | 14.3% | 6.7% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
31.8%
HS graduate
50.0%
Some college, no degree
4.5%
Associate's degree
0.0%
Bachelor's degree
13.6%
Graduate / professional
0.0%
| Metric | % |
|---|---|
| HS diploma or higher | 68.2% |
| Bachelor's or higher | 13.6% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 0 | 0.0% |
| High school | 0 | 0.0% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Agriculture & mining
85.7%
Professional & management
14.3%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 71.4% |
| Service | 14.3% |
| Sales & office | 0.0% |
| Natural resources & construction | 14.3% |
| Production & transportation | 0.0% |
Employment type
| Type | % |
|---|---|
| Private sector | 14.3% |
| Government | 0.0% |
| Self-employed | 85.7% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 85.7% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 14.3% |
| Work from home | 0.0% |
| Other means | 0.0% |
| Avg commute (minutes) | 0.0 |
Poverty
All people
40.9%
Under 18 years
0.0%
18 and over
40.9%
Married-couple families
50.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 55.6% |
| Retirement income | 44.4% |
| Supplemental Security | 22.2% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 11.1% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 32.5% |
| High blood pressure | 30.5% |
| High cholesterol | 32.4% |
| Diabetes | 9.7% |
| Heart disease | 6.7% |
| Stroke | 3.0% |
| Asthma | 9.9% |
| Arthritis | 26.5% |
| Kidney disease | 2.8% |
| Pulmonary disease | 7.2% |
| Cancer | 6.6% |
| Behavior / access | % |
|---|---|
| Smoking | 20.3% |
| Binge drinking | 21.7% |
| No physical activity | 21.9% |
| Less than 7 hrs sleep | 31.2% |
| Depression | 22.8% |
| Fair or poor health | 13.1% |
| Poor mental health | 13.4% |
| Poor physical health | 10.9% |
| No health insurance | 12.2% |
| Visited doctor (checkup) | 68.6% |
| Visited dentist | 60.0% |
| Cholesterol screening | 88.2% |
| Teeth loss | 13.8% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 2 | 9.1% |
| Disability | % |
|---|---|
| Any disability | 36.4% |
| Under 18 | 0.0% |
| 18–64 years | 35.7% |
| 65 and over | 37.5% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 36.4% |
| Public insurance | 59.1% |
| No insurance | 31.8% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 22 | 100.0% |
| Spanish | 0 | 0.0% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 22 | 100.0% |
| Born in same state | 22 | 100.0% |
| Born in different state | 10 | 45.5% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 4 | 18.2% |
| Arab | 4 | 18.2% |
| Ancestry | Count | % |
|---|---|---|
| French | 1 | 4.5% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 40.9% |
| Internet access | 100.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 59058
What city is ZIP code 59058 in?
ZIP code 59058 is primarily assigned to Mosby, Montana.
What county is ZIP code 59058 in?
ZIP code 59058 falls within Garfield County, Montana.
What is the poverty rate in ZIP code 59058?
41% of residents in ZIP code 59058 live below the poverty line, above the national average.
Does ZIP code 59058 have an older population?
36% of residents in ZIP code 59058 are 65 or older, above the national average of ~17%.
Does ZIP code 59058 have a large retiree population?
56% of households in ZIP code 59058 receive Social Security income, suggesting a significant retiree or disability population.
How educated is the population of ZIP code 59058?
14% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.
What timezone is ZIP code 59058 in?
ZIP code 59058 observes the MST timezone.