Residential delivery area · Montana
ZIP Code 59923: Libby, MT
ZIP code 59923 uses the postal name Libby, Montana and lies entirely in Lincoln County (Census 2020 ZIP-county file). About 10,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $44,980 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Happys Inn (under 1%), Pioneer Junction (under 1%), Libby (under 1%) and White Haven (under 1%); 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Libby · its only residential ZIP
- County
- Lincoln County
- Census places
- Happys Inn (under 1%) census-designated place; Pioneer Junction (under 1%) census-designated place; Libby (under 1%); White Haven (under 1%) census-designated place
- House district
- MT-1 119th Congress
- State
- Montana
- Time zone
- Mountain
- Land area
- 1,412.5 sq mi · 7 people per sq mi
Where is ZIP code 59923?
59923 centers on 48.271°, -115.313° and covers 1,412.5 square miles of land plus 6.7 of water. It borders 9 ZIP codes: 59853, 59925, 59934, 59927, 59874, 59935, 59937, 59901, 59873.
The map draws ZIP code areas only. For the streets inside 59923, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 59923 compare with the rest of Lincoln County?
| Measure | 59923 | In Lincoln County | In MT |
|---|---|---|---|
| People (ACS 2020-2024) | 10,450 | 1st of 7 | 28th of 369 |
| Median household income | $45k | 1st of 2 | 100th of 104 |
| Median home value | $272k | 3rd of 3 | 76th of 120 |
Its median household income is higher than in 9% of U.S. residential ZIP codes, and it is denser than 14% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 59923?
The 2020 Census counted 9,743 people in 59923; the ACS, which samples households over 2020-2024, estimates 10,450. Between the 2010 and 2020 censuses its population fell 1.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,450
- 2020 Census count
- 9,743−1.1% since 2010 (9,856)
- Households
- 4,847
- Median age
- 54.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 59923?
Of the 10,450 people the ACS estimates in 59923, 15.6% are under 18 and 31.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (89.6%).
- Under 1815.6%
- 18 to 6453.0%
- 65 and older31.4%
- White, not Hispanic89.6%
- Other or two or more6.5%
- Hispanic or Latino3.8%
- Asian, not Hispanic0.1%
- Black, not Hispanic0.1%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 59923 earn?
Median household income is $44,980 (ACS 2020-2024). It is not measurably different from 2015-2019 ($49,051 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $44,980±$5,776
- Income per person
- $30,132
- Below the poverty line
- 15.3%
- Unemployed (of the labor force)
- 5.2%
- Adults 25+ with a bachelor's degree
- 18.8%
- Adjusted gross income per tax return, 2022
- $61,5324,370 returns; wages 56% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 59923?
FHFA's house price index for 59923, built from repeat sales and appraisals of the same homes, rose 171% from 2015 to 2025 and rose 93% from 2020 to 2025, and moved +19.3% in 2025.
- Median home value (owners' estimate)
- $272,000
- Median gross rent
- $665
- Homes owned by their occupants
- 72.0%
- Housing units
- 5,343
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 59923?
315 business establishments had a location in this ZIP code in 2023, 7 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade48
- Construction44
- Health care and social assistance37
- Accommodation and food services34
- Other services (except public administration)28
- Professional, scientific, and technical services18
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 59923?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 59853 | Noxon | 1,030 | $60k | 27.1 mi |
| 59925 | Marion | 1,532 | $64k | 27.1 mi |
| 59934 | Trego | 693 | $109k | 30.7 mi |
| 59927 | Olney | 270 | $59k | 34.0 mi |
| 59874 | Trout Creek | 2,266 | $64k | 34.7 mi |
| 59935 | Troy | 3,381 | $40k | 35.5 mi |
| 59937 | Whitefish | 15,114 | $75k | 39.1 mi |
| 59901 | Kalispell | 63,161 | $73k | 42.0 mi |
| 59873 | Thompson Falls | 2,920 | $60k | 42.0 mi |
| 59844 | Heron | 712 | $43k | 34.4 mi (near) |
| 59920 | Kila | 1,704 | $87k | 37.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.