Residential delivery area · Kentucky
ZIP Code 42539: Liberty, KY
ZIP code 42539 uses the postal name Liberty, Kentucky and lies mostly in Casey County (99% of its land) with the rest in Adair County (Census 2020 ZIP-county file). About 9,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $40,862 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Liberty; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Liberty · its only residential ZIP
- County
- Casey County (99%); Adair County (1%)
- Census places
- Liberty
- House district
- KY-1 119th Congress
- State
- Kentucky
- Time zone
- Eastern
- Land area
- 219.6 sq mi · 42 people per sq mi
Where is ZIP code 42539?
42539 centers on 37.309°, -84.951° and covers 219.6 square miles of land plus 0.9 of water. It borders 10 ZIP codes: 42541, 42566, 42528, 42516, 40437, 42565, 42733, 40009, 42553, 42728.
The map draws ZIP code areas only. For the streets inside 42539, 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 42539 compare with the rest of Casey County?
| Measure | 42539 | In Casey County | In KY |
|---|---|---|---|
| People (ACS 2020-2024) | 9,249 | 1st of 13 | 139th of 780 |
| Median household income | $41k | 4th of 4 | 285th of 310 |
| Median home value | $131k | 2nd of 3 | 234th of 320 |
Its median household income is higher than in 6% of U.S. residential ZIP codes, and it is denser than 39% 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 42539?
The 2020 Census counted 10,134 people in 42539; the ACS, which samples households over 2020-2024, estimates 9,249. Between the 2010 and 2020 censuses its population grew 1.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 9,249
- 2020 Census count
- 10,134+1.1% since 2010 (10,026)
- Households
- 3,834
- Median age
- 42.9
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 42539?
Of the 9,249 people the ACS estimates in 42539, 21.3% are under 18 and 23.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (94.2%).
- Under 1821.3%
- 18 to 6455.8%
- 65 and older23.0%
- White, not Hispanic94.2%
- Hispanic or Latino3.7%
- Other or two or more1.8%
- Black, not Hispanic0.4%
- Asian, not Hispanic0.0%
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 42539 earn?
Median household income is $40,862 (ACS 2020-2024), the 4th highest of the 4 ranked ZIP codes in Casey County. It is not measurably different from 2015-2019 ($44,028 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $40,862±$7,203
- Income per person
- $23,330
- Below the poverty line
- 21.9%
- Unemployed (of the labor force)
- 6.3%
- Adults 25+ with a bachelor's degree
- 11.9%
- Adjusted gross income per tax return, 2022
- $45,6483,810 returns; wages 71% 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 42539?
FHFA's house price index for 42539, built from repeat sales and appraisals of the same homes, rose 65% from 2015 to 2025 and rose 40% from 2020 to 2025, and moved +0.1% in 2025.
- Median home value (owners' estimate)
- $130,500
- Median gross rent
- $674
- Homes owned by their occupants
- 76.5%
- Housing units
- 4,458
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 42539?
184 business establishments had a location in this ZIP code in 2023, 1 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade47
- Health care and social assistance26
- Manufacturing20
- Construction17
- Accommodation and food services13
- Other services (except public administration)13
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 42539?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 42541 | Middleburg | 498 | $43k | 8.9 mi |
| 42566 | Yosemite | 541 | $60k | 9.5 mi |
| 42528 | Dunnville | 2,126 | $50k | 9.7 mi |
| 42516 | Bethelridge | 540 | $43k | 10.9 mi |
| 40437 | Hustonville | 4,488 | $54k | 11.8 mi |
| 42565 | Windsor | 758 | $71k | 11.8 mi |
| 42733 | Elk Horn | 1,610 | $81k | 13.2 mi |
| 40009 | Bradfordsville | 1,851 | $64k | 14.2 mi |
| 42553 | Science Hill | 5,649 | $53k | 16.6 mi |
| 42728 | Columbia | 16,412 | $52k | 22.9 mi |
| 40442 | Kings Mountain | 781 | – | 11.7 mi (near) |
| 42753 | Knifley | 657 | $55k | 12.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.