Custer County, MT ZIP Codes
Montana (MT) · 4 ZIP codes · 4 cities
4
ZIP codes
11,916
population (2021)
+1.9%
pop change since 2010
30017
FIPS code
Custer County ZIP code map
About Custer County
Custer County is located in Montana and contains 4 ZIP codes across 4 cities and communities.
The county's population was 11,916 as of 2021,
an increase of
1.9% from 11,699 in 2010.
The timezone is Pacific Time (observes DST).
The Federal Information Processing System (FIPS) code for Custer County is 30017.
| Population | |
|---|---|
| 2021 population | 11,916 |
| 2010 population | 11,699 |
| Change | +1.9% |
| County details | |
|---|---|
| State | Montana |
| FIPS code | 30017 |
| Timezone | Pacific |
| Daylight saving | Yes |
Cities in Custer County
ZIP codes for Custer County, MT (4)
| ZIP code | City | County | Map |
|---|---|---|---|
| 59301 | Miles City | Custer | View map |
| 59336 | Ismay | Custer | View map |
| 59338 | Kinsey | Custer | View map |
| 59351 | Volborg | Custer | View map |
Demographics & statistics
11,813
Population
42.7
Median age
$61,355
Median household income
$34,853
Per capita income
$209,700
Median home value
$290
Median monthly rent
84.0%
Home ownership
12.7%
Poverty rate
1.1%
Unemployment
4,073
Housing units
26.2%
Bachelor's or higher
Age distribution
Male
Female
266
Under 5
301
292
5–9
330
325
10–14
366
349
15–19
394
333
20–24
376
643
25–34
725
704
35–44
794
628
45–54
709
421
55–59
475
458
60–64
517
660
65–74
746
347
75–84
391
124
85+
139
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 2,314 | 12.9% |
| 18 and over | 9,499 | 87.1% |
| 65 and over | 2,407 | 25.4% |
| Median age | 42.7 years | |
Race & ethnicity
White
88.8%
Two or more races
5.4%
Hispanic or Latino
2.8%
American Indian / Alaska Native
1.2%
Other race
1%
Asian
0.4%
Black or African American
0.2%
Native Hawaiian / Pacific Islander
0.1%
| Group | Count | % |
|---|---|---|
| White | 10,791 | 88.8% |
| Two or more races | 662 | 5.4% |
| Hispanic or Latino | 339 | 2.8% |
| American Indian / Alaska Native | 146 | 1.2% |
| Other race | 123 | 1% |
| Asian | 46 | 0.4% |
| Black or African American | 28 | 0.2% |
| Native Hawaiian / Pacific Islander | 17 | 0.1% |
Household income
Under $10k
9.8%
$10k–$15k
5.6%
$15k–$25k
5.4%
$25k–$35k
7.2%
$35k–$50k
11.7%
$50k–$75k
10.3%
$75k–$100k
10.3%
$100k–$150k
14.7%
$150k–$200k
11.4%
$200k+
13.7%
| Range | % of households |
|---|---|
| Under $10k | 9.8% |
| $10k–$15k | 5.6% |
| $15k–$25k | 5.4% |
| $25k–$35k | 7.2% |
| $35k–$50k | 11.7% |
| $50k–$75k | 10.3% |
| $75k–$100k | 10.3% |
| $100k–$150k | 14.7% |
| $150k–$200k | 11.4% |
| $200k+ | 13.7% |
| Median income | $61,355 |
Housing
Home values
Under $50k
13.4%
$50k–$100k
10.1%
$100k–$150k
10.8%
$150k–$200k
13.1%
$200k–$300k
34.8%
$300k–$500k
9.4%
$500k–$1M
6.9%
$1M+
1.6%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $209,700 |
| Median rent / month | $290 |
| Owner occupied | 84.0% |
| Renter occupied | 16.0% |
| Vacant | 18.6% |
| Single-family detached | 82.4% |
| Large apartment buildings | 1.7% |
| Mobile homes | 10.0% |
| Median rooms | 5.8 |
| Avg household size (owned) | 2.07 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 5.6% |
| 2000–2009 | 8.2% |
| 1990–1999 | 5.7% |
| 1980–1989 | 2.0% |
| 1970–1979 | 18.6% |
| 1960–1969 | 3.0% |
| 1950–1959 | 21.6% |
| 1940–1949 | 15.1% |
| 1939 or earlier | 20.2% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.1% |
| 1 bedroom | 6.6% |
| 2 bedrooms | 23.6% |
| 3 bedrooms | 44.4% |
| 4 bedrooms | 20.2% |
| 5+ bedrooms | 4.1% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 1.5% |
| 1 vehicle | 18.3% |
| 2 vehicles | 31.8% |
| 3 or more | 48.4% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 20.8% |
| Electricity | 8.8% |
| Propane / LP gas | 61.8% |
| Wood | 2.1% |
| No fuel used | 0.1% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 2,459 | 57.5% |
| Cohabiting couple | 361 | 5.6% |
| Male householder, no spouse | 1,056 | 14.3% |
| Female householder, no spouse | 1,067 | 22.6% |
| Households with children under 18 | 1,353 | 15.6% |
| Households with seniors (65+) | 1,661 | 41.1% |
| Average household size | 2.06 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 22.4% | 16.5% |
| Married | 66.4% | 61.5% |
| Separated | 0.9% | 0.6% |
| Widowed | 0.8% | 11.2% |
| Divorced | 9.4% | 10.2% |
Education
Less than 9th grade
0.5%
Some HS, no diploma
1.9%
HS graduate
27.7%
Some college, no degree
33.0%
Associate's degree
10.7%
Bachelor's degree
15.6%
Graduate / professional
10.6%
| Metric | % |
|---|---|
| HS diploma or higher | 97.6% |
| Bachelor's or higher | 26.2% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 157 | 6.9% |
| Kindergarten | 96 | 9.7% |
| Elementary school | 1,057 | 38.7% |
| High school | 589 | 22.8% |
| College / grad school | 530 | 21.9% |
Employment
Industry of employment
Agriculture & mining
37.9%
Education & healthcare
13.2%
Retail trade
10.0%
Public administration
8.8%
Finance & real estate
8.0%
Construction
6.6%
Transportation & utilities
6.3%
Arts, food & hospitality
2.9%
Professional & management
1.9%
Other services
1.6%
Manufacturing
1.5%
Wholesale trade
0.8%
Information
0.6%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 48.5% |
| Service | 7.0% |
| Sales & office | 19.9% |
| Natural resources & construction | 15.5% |
| Production & transportation | 9.1% |
Employment type
| Type | % |
|---|---|
| Private sector | 52.4% |
| Government | 16.3% |
| Self-employed | 31.2% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 61.9% |
| Carpool | 11.4% |
| Public transit | 0.0% |
| Walk | 10.8% |
| Other means | 5.4% |
| Avg commute (minutes) | 20.1 |
Poverty
All people
12.7%
Under 18 years
2.3%
18 and over
14.1%
Married-couple families
5.7%
Female-led households
7.6%
Income support
| Source | % of households |
|---|---|
| Social Security | 44.9% |
| Retirement income | 15.3% |
| Supplemental Security | 9.9% |
| Cash public assistance | 1.8% |
| Food stamps / SNAP | 3.2% |
Health indicators
| Condition | % |
|---|---|
| High blood pressure | 20.7% |
| High cholesterol | 21.6% |
| Heart disease | 4.6% |
| Stroke | 2.1% |
| Asthma | 6.7% |
| Arthritis | 18.5% |
| Kidney disease | 2.0% |
| Pulmonary disease | 4.4% |
| Cancer | 5.2% |
| Behavior / access | % |
|---|---|
| Binge drinking | 13.7% |
| No physical activity | 13.6% |
| Less than 7 hrs sleep | 20.8% |
| Fair or poor health | 8.3% |
| Poor mental health | 8.3% |
| Poor physical health | 7.0% |
| No health insurance | 7.3% |
| Visited doctor (checkup) | 48.0% |
| Visited dentist | 44.1% |
| Cholesterol screening | 60.1% |
| Teeth loss | 8.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 1,031 | 8.0% |
| Disability | % |
|---|---|
| Any disability | 19.8% |
| Under 18 | 11.9% |
| 18–64 years | 21.3% |
| 65 and over | 25.3% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 71.9% |
| Public insurance | 40.2% |
| Uninsured under 19 | 2.5% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 11,246 | 97.6% |
| Spanish | 117 | 0.4% |
| Other Indo-European | 6 | 0.0% |
| Asian & Pacific Islander | 61 | 0.2% |
| Other languages | 50 | 0.2% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 11,590 | 99.4% |
| Born in same state | 11,535 | 97.6% |
| Born in different state | 7,337 | 74.6% |
| Foreign born | 55 | 1.8% |
| Naturalized citizen | 223 | 0.6% |
| Not a US citizen | 154 | 23.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 1,613 | 13.7% |
| French | 1,261 | 10.7% |
| Polish | 1,063 | 9% |
| Arab | 510 | 4.3% |
| Ancestry | Count | % |
|---|---|---|
| English | 196 | 1.7% |
| Dutch | 135 | 1.1% |
| German | 100 | 0.8% |
| Irish | 85 | 0.7% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 48.5% |
| Internet access | 96.8% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
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