59923 ZIP Code — Libby, MT

Lincoln County, Montana

ZIP code 59923 is located in Libby, Montana, within Lincoln County. It covers approximately 1,412.52 square miles and serves a population of 9,545 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 406.

About ZIP code 59923

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $209,200. Owner-occupancy sits near the national average at 73%.

Median household income is $43,271. 50% 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 16 minutes is near the national average.

College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 14% of civilians, above the national average of 7%; and disability rates above the national average at 25%.

Overall, ZIP code 59923 reflects a community defined by a trades-oriented workforce, a strong veteran community, and a significant Social Security-dependent population.

9,545

population

1,412.52

sq mi land

Standard

ZIP type

Mountain (MT)

timezone

59923 ZIP code map

Cities in ZIP code 59923

Below are the cities the US Postal Service accepts for ZIP code 59923. Using any city not on this list may result in mail delivery delays.

City	Status
Libby	Preferred

Demographics updated 05/2026

Population
Total population	9,545
Population density	9,545 / sq mi
State FIPS	30
County FIPS	053

Geography
Land area	1,412.52 sq mi
Water area	6.67 sq mi
Latitude	48.3680
Longitude	-115.3255
Timezone	Mountain (MT)
Area code	406

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	60.9%	59.3%	44.2%
$50k – $100k	27.4%	25.6%	32.0%
$100k – $200k	10.5%	13.5%	19.2%
Over $200k	1.2%	1.7%	4.7%

Demographics & statistics

9,545

Population

9,545

People per sq mi

55.2

Median age

$43,271

Median household income

$30,621

Per capita income

$209,200

Median home value

$682

Median monthly rent

72.5%

Home ownership

16.6%

Poverty rate

8.3%

Unemployment

3,990

Housing units

15.2%

Bachelor's or higher

Age distribution

Male Female

178

Under 5

178

165

5–9

166

151

10–14

152

277

15–19

278

167

20–24

167

460

25–34

461

381

35–44

382

593

45–54

593

431

55–59

431

519

60–64

519

851

65–74

851

476

75–84

476

121

85+

121

← Male

Female →

Age summary

Group	Count	%
Under 18	1,361	14.3%
18 and over	8,184	85.7%
65 and over	2,896	30.3%
Median age	55.2 years

Race & ethnicity

White 89.2%

Two or more races 5.4%

Hispanic or Latino 2.7%

American Indian / Alaska Native 1.9%

Asian 0.5%

Native Hawaiian / Pacific Islander 0.3%

Black or African American 0.1%

Group	Count	%
White	8,748	89.2%
Two or more races	530	5.4%
Hispanic or Latino	262	2.7%
American Indian / Alaska Native	190	1.9%
Asian	45	0.5%
Native Hawaiian / Pacific Islander	25	0.3%
Black or African American	7	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	60.9%	59.3%	44.2%
$50k – $100k	27.4%	25.6%	32.0%
$100k – $200k	10.5%	13.5%	19.2%
Over $200k	1.2%	1.7%	4.7%

Under $10k 6.4%

$10k–$15k 9.1%

$15k–$25k 11.1%

$25k–$35k 14.7%

$35k–$50k 16.3%

$50k–$75k 14.2%

$75k–$100k 10.8%

$100k–$150k 12.6%

$150k–$200k 2.9%

$200k+ 1.9%

Range	% of households
Under $10k	6.4%
$10k–$15k	9.1%
$15k–$25k	11.1%
$25k–$35k	14.7%
$35k–$50k	16.3%
$50k–$75k	14.2%
$75k–$100k	10.8%
$100k–$150k	12.6%
$150k–$200k	2.9%
$200k+	1.9%
Median income	$43,271

Housing

Home values

Under $50k 6.7%

$50k–$100k 14.2%

$100k–$150k 10.1%

$150k–$200k 15.8%

$200k–$300k 25.9%

$300k–$500k 19.5%

$500k–$1M 5.6%

$1M+ 2.2%

Housing overview

Metric	Value
Median home value	$209,200
Median rent / month	$682
Owner occupied	72.5%
Renter occupied	27.5%
Vacant	11.1%
Single-family detached	68.3%
Large apartment buildings	2.5%
Mobile homes	16.8%
Median rooms	5.1
Avg household size (owned)	2.06

Year built

Era	%
2020 or later	0.6%
2010–2019	3.6%
2000–2009	10.0%
1990–1999	8.0%
1980–1989	14.0%
1970–1979	20.7%
1960–1969	18.3%
1950–1959	10.9%
1940–1949	3.5%
1939 or earlier	10.3%

Bedrooms

Size	% of units
No bedroom (studio)	2.6%
1 bedroom	14.1%
2 bedrooms	28.4%
3 bedrooms	33.9%
4 bedrooms	18.8%
5+ bedrooms	2.3%

Vehicles per household

Vehicles	% of households
No vehicle	4.8%
1 vehicle	32.3%
2 vehicles	35.3%
3 or more	27.6%

Heating fuel

Fuel type	%
Utility gas	3.9%
Electricity	56.4%
Propane / LP gas	12.2%
Fuel oil	4.9%
Wood	20.9%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	2,059	43.9%
Cohabiting couple	347	7.4%
Male householder, no spouse	1,189	25.3%
Female householder, no spouse	1,100	23.4%
Households with children under 18	792	16.9%
Households with seniors (65+)	2,008	42.8%
Average household size	2.00

Marital status

Status	Male	Female
Never married	24.2%	19.4%
Married	47.1%	51.6%
Separated	4.2%	3.2%
Widowed	6.4%	10.0%
Divorced	18.1%	15.8%

Education

Less than 9th grade 1.6%

Some HS, no diploma 5.9%

HS graduate 39.0%

Some college, no degree 28.1%

Associate's degree 10.1%

Bachelor's degree 10.6%

Graduate / professional 4.6%

Metric	%
HS diploma or higher	92.4%
Bachelor's or higher	15.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	58	4.5%
Kindergarten	69	5.4%
Elementary school	453	35.3%
High school	457	35.6%
College / grad school	246	19.2%

Employment

Industry of employment

Education & healthcare 19.1%

Arts, food & hospitality 16.0%

Retail trade 14.9%

Construction 8.5%

Agriculture & mining 7.8%

Transportation & utilities 7.7%

Professional & management 7.4%

Finance & real estate 4.8%

Other services 4.7%

Public administration 4.3%

Manufacturing 4.2%

Information 0.4%

Wholesale trade 0.2%

Occupation

Category	%
Management, business & arts	29.2%
Service	26.1%
Sales & office	19.1%
Natural resources & construction	14.9%
Production & transportation	10.7%

Employment type

Type	%
Private sector	71.9%
Government	20.0%
Self-employed	8.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	71.4%
Carpool	16.0%
Public transit	0.0%
Walk	3.6%
Work from home	5.7%
Other means	3.3%
Avg commute (minutes)	15.5

Poverty

All people 16.6%

Under 18 years 26.5%

18 and over 14.9%

Married-couple families 3.4%

Female-led households 39.0%

Income support

Source	% of households
Social Security	49.7%
Retirement income	31.5%
Supplemental Security	3.6%
Cash public assistance	2.4%
Food stamps / SNAP	17.0%

Health indicators

Condition	%
Obesity	33.0%
High blood pressure	34.3%
High cholesterol	34.5%
Diabetes	11.9%
Heart disease	8.3%
Stroke	4.0%
Asthma	10.4%
Arthritis	30.3%
Kidney disease	3.6%
Pulmonary disease	9.1%
Cancer	8.0%

Behavior / access	%
Smoking	19.8%
Binge drinking	18.1%
No physical activity	23.4%
Less than 7 hrs sleep	29.8%
Depression	21.8%
Fair or poor health	15.6%
Poor mental health	13.3%
Poor physical health	12.7%
No health insurance	13.6%
Visited doctor (checkup)	71.8%
Visited dentist	57.6%
Cholesterol screening	88.8%
Teeth loss	16.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,158	14.1%

Disability	%
Any disability	24.9%
Under 18	10.7%
18–64 years	19.9%
65 and over	41.1%

Health insurance coverage

Type	%
Private insurance	49.5%
Public insurance	57.4%
No insurance	12.3%
Uninsured under 19	5.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	9,189	96.3%
Spanish	117	1.3%
Other Indo-European	48	0.5%
Asian & Pacific Islander	69	0.8%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	9,208	96.5%
Born in same state	9,198	96.4%
Born in different state	4,182	43.8%
Foreign born	10	0.1%
Naturalized citizen	337	3.5%
Not a US citizen	74	22.0%

Ancestry

Ancestry	Count	%
French	1,555	16.3%
Italian	1,276	13.4%
Polish	682	7.1%
Arab	474	5%

Ancestry	Count	%
English	172	1.8%
German	127	1.3%
Dutch	117	1.2%

Technology access

Metric	% of households
Computer access	49.2%
Internet access	90.5%

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

Frequently asked questions about ZIP code 59923

What city is ZIP code 59923 in?

ZIP code 59923 is primarily assigned to Libby, Montana.

What county is ZIP code 59923 in?

ZIP code 59923 falls within Lincoln County, Montana.

Does ZIP code 59923 have an older population?

30% of residents in ZIP code 59923 are 65 or older, above the national average of ~17%.

Does ZIP code 59923 have a large retiree population?

50% of households in ZIP code 59923 receive Social Security income, suggesting a significant retiree or disability population.

What is the poverty rate in ZIP code 59923?

17% of residents in ZIP code 59923 live below the poverty line, above the national average.

Does ZIP code 59923 have a large veteran population?

14% of civilians in ZIP code 59923 are veterans, above the national average of ~7%.

What timezone is ZIP code 59923 in?

ZIP code 59923 observes the MST timezone.