59865 ZIP Code — Saint Ignatius, MT

Lake County, Montana

ZIP code 59865 is located in Saint Ignatius, Montana, within Lake County. It covers approximately 162.91 square miles and serves a population of 3,899 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 406.

About ZIP code 59865

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $318,500. Owner-occupancy sits near the national average at 70%.

Median household income is $54,375. 42% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 27 minutes is near the national average.

Educational attainment is near the national average, with 27% of residents holding a bachelor's degree or higher.

Health indicators show elevated rates of smoking (22%) compared to national benchmarks. 17% of residents lack health insurance, above the national average.

3,899

population

162.91

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

59865 ZIP code map

Cities in ZIP code 59865

Below are the cities the US Postal Service accepts for ZIP code 59865. Using any city not on this list may result in mail delivery delays.

City	Status
Saint Ignatius	Acceptable
Saint Ignatius	Preferred

Nearby ZIP codes

59824 Charlo (9.6 mi) 59821 Arlee (10.4 mi) 59864 Ronan (13.5 mi) 59831 Dixon (16 mi) 59826 Condon (16.6 mi)

Demographics updated 06/2026

Population
Total population	3,899
Population density	24 / sq mi
State FIPS	30
County FIPS	047

Geography
Land area	162.91 sq mi
Water area	2.04 sq mi
Latitude	47.3351
Longitude	-114.0319
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	48.8%	50.0%	44.2%
$50k – $100k	31.4%	30.3%	32.0%
$100k – $200k	18.9%	16.9%	19.2%
Over $200k	0.9%	2.8%	4.7%

Demographics & statistics

3,899

Population

People per sq mi

35.7

Median age

$54,375

Median household income

$26,795

Per capita income

$318,500

Median home value

$496

Median monthly rent

70.2%

Home ownership

17.0%

Poverty rate

8.1%

Unemployment

1,029

Housing units

27.3%

Bachelor's or higher

Age distribution

Male Female

146

Under 5

157

162

5–9

175

129

10–14

140

114

15–19

124

110

20–24

119

245

25–34

265

198

35–44

215

192

45–54

207

132

55–59

143

105

60–64

114

195

65–74

211

103

75–84

112

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,051	27.0%
18 and over	2,848	73.0%
65 and over	707	18.1%
Median age	35.7 years

Race & ethnicity

White 54.6%

American Indian / Alaska Native 32.7%

Two or more races 9.9%

Hispanic or Latino 1.7%

Asian 0.6%

Black or African American 0.3%

Native Hawaiian / Pacific Islander 0.2%

Other race 0.1%

Group	Count	%
White	2,163	54.6%
American Indian / Alaska Native	1,298	32.7%
Two or more races	394	9.9%
Hispanic or Latino	66	1.7%
Asian	22	0.6%
Black or African American	13	0.3%
Native Hawaiian / Pacific Islander	6	0.2%
Other race	3	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	48.8%	50.0%	44.2%
$50k – $100k	31.4%	30.3%	32.0%
$100k – $200k	18.9%	16.9%	19.2%
Over $200k	0.9%	2.8%	4.7%

Under $10k 6.6%

$10k–$15k 2.4%

$15k–$25k 13.0%

$25k–$35k 8.9%

$35k–$50k 12.9%

$50k–$75k 15.0%

$75k–$100k 15.4%

$100k–$150k 11.6%

$150k–$200k 9.7%

$200k+ 4.4%

Range	% of households
Under $10k	6.6%
$10k–$15k	2.4%
$15k–$25k	13.0%
$25k–$35k	8.9%
$35k–$50k	12.9%
$50k–$75k	15.0%
$75k–$100k	15.4%
$100k–$150k	11.6%
$150k–$200k	9.7%
$200k+	4.4%
Median income	$54,375

Housing

Home values

Under $50k 8.6%

$50k–$100k 4.0%

$100k–$150k 7.8%

$150k–$200k 12.5%

$200k–$300k 13.7%

$300k–$500k 27.5%

$500k–$1M 22.2%

$1M+ 3.6%

Housing overview

Metric	Value
Median home value	$318,500
Median rent / month	$496
Owner occupied	70.2%
Renter occupied	29.8%
Vacant	7.8%
Single-family detached	77.6%
Large apartment buildings	0.2%
Mobile homes	12.2%
Median rooms	5.3
Avg household size (owned)	3.08

Year built

Era	%
2020 or later	0.8%
2010–2019	5.6%
2000–2009	15.3%
1990–1999	16.6%
1980–1989	16.3%
1970–1979	12.4%
1960–1969	9.2%
1950–1959	6.4%
1940–1949	4.8%
1939 or earlier	12.5%

Bedrooms

Size	% of units
No bedroom (studio)	1.7%
1 bedroom	7.8%
2 bedrooms	25.5%
3 bedrooms	43.7%
4 bedrooms	16.7%
5+ bedrooms	4.6%

Vehicles per household

Vehicles	% of households
No vehicle	8.6%
1 vehicle	21.5%
2 vehicles	34.9%
3 or more	35.1%

Heating fuel

Fuel type	%
Utility gas	3.7%
Electricity	47.4%
Propane / LP gas	21.9%
Fuel oil	6.7%
Wood	18.3%
No fuel used	0.8%

Households & families

Household type	Count	%
Married-couple family	638	48.7%
Cohabiting couple	107	8.2%
Male householder, no spouse	94	7.2%
Female householder, no spouse	470	35.9%
Households with children under 18	410	31.3%
Households with seniors (65+)	523	40.0%
Average household size	2.94

Marital status

Status	Male	Female
Never married	38.9%	29.5%
Married	46.7%	42.0%
Separated	0.7%	1.5%
Widowed	2.6%	11.2%
Divorced	11.2%	15.8%

Education

Less than 9th grade 6.1%

Some HS, no diploma 3.9%

HS graduate 24.2%

Some college, no degree 28.1%

Associate's degree 10.4%

Bachelor's degree 18.7%

Graduate / professional 8.7%

Metric	%
HS diploma or higher	90.0%
Bachelor's or higher	27.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	90	8.8%
Kindergarten	90	8.8%
Elementary school	434	42.5%
High school	187	18.3%
College / grad school	221	21.6%

Employment

Industry of employment

Education & healthcare 23.3%

Public administration 12.3%

Retail trade 10.4%

Arts, food & hospitality 9.0%

Manufacturing 8.7%

Professional & management 8.4%

Construction 6.1%

Agriculture & mining 5.6%

Other services 5.4%

Wholesale trade 3.8%

Finance & real estate 3.5%

Transportation & utilities 2.9%

Information 0.6%

Occupation

Category	%
Management, business & arts	45.6%
Service	15.1%
Sales & office	21.6%
Natural resources & construction	5.6%
Production & transportation	12.0%

Employment type

Type	%
Private sector	60.9%
Government	30.0%
Self-employed	8.3%
Unpaid family workers	0.8%

Commute

Method	%
Drive alone	67.5%
Carpool	12.9%
Public transit	0.0%
Walk	4.7%
Work from home	12.1%
Other means	2.8%
Avg commute (minutes)	26.7

Poverty

All people 17.0%

Under 18 years 24.8%

18 and over 14.3%

Married-couple families 9.6%

Female-led households 23.7%

Income support

Source	% of households
Social Security	41.9%
Retirement income	23.0%
Supplemental Security	4.7%
Cash public assistance	2.4%
Food stamps / SNAP	16.4%

Health indicators

Condition	%
Obesity	34.4%
High blood pressure	32.3%
High cholesterol	32.5%
Diabetes	12.3%
Heart disease	7.8%
Stroke	4.1%
Asthma	11.7%
Arthritis	28.4%
Kidney disease	3.5%
Pulmonary disease	8.6%
Cancer	7.0%

Behavior / access	%
Smoking	21.8%
Binge drinking	19.4%
No physical activity	23.7%
Less than 7 hrs sleep	32.8%
Depression	22.9%
Fair or poor health	17.5%
Poor mental health	15.3%
Poor physical health	13.5%
No health insurance	13.2%
Visited doctor (checkup)	69.0%
Visited dentist	57.2%
Cholesterol screening	87.3%
Teeth loss	17.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	276	9.7%

Disability	%
Any disability	16.5%
Under 18	15.7%
18–64 years	10.5%
65 and over	36.2%

Health insurance coverage

Type	%
Private insurance	46.4%
Public insurance	51.8%
No insurance	17.2%
Uninsured under 19	16.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,596	92.2%
Spanish	69	1.9%
Other Indo-European	10	0.3%
Asian & Pacific Islander	52	1.4%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,841	98.5%
Born in same state	3,799	97.4%
Born in different state	2,408	61.8%
Foreign born	42	1.1%
Naturalized citizen	58	1.5%
Not a US citizen	55	94.8%

Ancestry

Ancestry	Count	%
Italian	371	9.5%
French	295	7.6%
Arab	240	6.2%
Polish	76	1.9%

Ancestry	Count	%
Dutch	43	1.1%
English	37	0.9%
Irish	2	0.1%

Technology access

Metric	% of households
Computer access	33.6%
Internet access	86.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 59865

What city is ZIP code 59865 in?

ZIP code 59865 is primarily assigned to Saint Ignatius, Montana.

What county is ZIP code 59865 in?

ZIP code 59865 falls within Lake County, Montana.

What is the poverty rate in ZIP code 59865?

17% of residents in ZIP code 59865 live below the poverty line, above the national average.

Does ZIP code 59865 have a large retiree population?

42% of households in ZIP code 59865 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 59865 have a large veteran population?

10% of civilians in ZIP code 59865 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 59865?

The median home value in ZIP code 59865 is $318,500.

What timezone is ZIP code 59865 in?

ZIP code 59865 observes the MST timezone.