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zipcodes.pro — STATE/MT/COUNTY/LINCOLN

Lincoln County, MT ZIP codes

There are 7 ZIP codes in Lincoln County, MT, in 7 towns, from 59917 to 59935. The largest are 59923 (Libby), 59917 (Eureka) and 59935 (Troy).

The county seat is Libby.

ZIP codes
7
Towns
7
County seat
Libby
County FIPS
30053
State
Montana
Population
21,175
Median household income
$47,143
Land area
3,613 sq mi

Lincoln County ZIP codes by town

Libby (county seat)
59923

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Lincoln County ZIP codes

59917599185992359930599335993459935

The ZIP codes of Lincoln County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Lincoln County in numbers

About 21,175 people live in Lincoln County, in 9,082 households, the 10th most populous of Montana's 56 counties. The median household income is $47,143 a year, 35% below the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $296,500 (21% below the Montana median), and median gross rent is $762 a month. The median age is 52.8; 18.9% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 19 minutes.

Population21,175Lincoln21,175
Households9,082Lincoln9,082
Median age52.8Lincoln52.8Montana40.4US 38.9
Median household income$47,143Lincoln$47,143Montana$72,509US $80,734
Median home value$296,500Lincoln$296,500Montana$375,800US $332,700
Median gross rent$762Lincoln$762Montana$1,081US $1,413
Bachelor's degree or higher18.9%Lincoln18.9%Montana35.2%US 35.7%
Mean commute18.5 minLincoln18.5 minMontana19.1 minUS 26.4 min
Population density6 / sq miLincoln6 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Lincoln County

Largest towns in Lincoln County
TownZIP codesPopulation
Libby 1 3,042
Eureka 1 1,840
Troy 1 871
Trego 1 692
Fortine 1 351
Rexford 1 134
Stryker 1 2

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Not sure you are in Lincoln County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Lincoln County, with figures

ZIP codes in Lincoln County
ZIP City Type Population Median income Median home
59917 Eureka , MT Standard 4,920 $50,139 $360,100
59918 Fortine , MT Standard 509 $67,250 $353,300
59923 Libby , MT Standard 10,450 $44,980 $272,000
59930 Rexford , MT Standard 1,220 $61,923 $287,400
59933 Stryker , MT Standard 2 — —
59934 Trego , MT Standard 693 $108,875 $330,800
59935 Troy , MT Standard 3,381 $39,712 $371,400

Cite this page

zipcodes.pro. “Lincoln County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mt/county/lincoln

Underlying data is public domain or openly licensed — sources, vintages and licences.