Hardin
Source:
Kentucky
Hardin is a county in Kentucky with 12 ZIP codes and a total population of 117,019. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
Hardin is a county inside Kentucky (FIPS code 21093) that contains 12 USPS ZIP codes covering a combined population of 117,019 according to Census ACS 5-Year Estimates. Counties are the natural bridge between state-level summaries and ZIP-level detail — crime statistics, HUD Fair Market Rents, and childcare pricing are all published at the county level, while household income and housing values are published at the ZIP level. This page reconciles the two views so you can see which ZIPs drive the county totals.
The 12 ZIPs listed below are ordered by population and each links to the full ZIP detail page with Census demographics, housing, income, home-price history, and cross-agency inputs. The most populated ZIP in Hardin is 42701 covering Elizabethtown with 48,194 residents at 117 people per square mile. Population density across ZIPs in this county varies — use the density column to spot urban cores versus rural delivery areas. A single county can contain both a dense downtown ZIP and a large rural ZIP covering several hundred square miles.
Because Hardin uses FIPS code 21093, it joins cleanly to county-level federal datasets: HUD Fair Market Rent tables, FBI Uniform Crime Report data, and the Department of Labor National Database of Childcare Prices all key off the same code. That is how neighborhood scorecards combine ZIP-level Census demographics with county-level safety and affordability metrics. All data on this page comes from U.S. Census Bureau ACS 2023 5-Year Estimates and USPS ZIP Code Tabulation Area files — no estimates, no proprietary sources, no editorial scoring.
12
Total ZIPs
117,019
Total Population
ZIP Codes in Hardin
Side-by-side: Compare 42701 vs 40160 →
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 42701 | Elizabethtown | 48,194 | 117 |
| 40160 | Radcliff | 23,574 | 540 |
| 40175 | Vine Grove | 13,070 | 67 |
| 40121 | Fort Knox | 10,124 | 115 |
| 40162 | Rineyville | 6,056 | 41 |
| 42724 | Cecilia | 4,714 | 24 |
| 42776 | Sonora | 2,736 | 16 |
| 42784 | Upton | 2,685 | 17 |
| 42732 | Eastview | 2,120 | 14 |
| 42740 | Glendale | 1,973 | 24 |
| 40177 | West Point | 1,463 | 41 |
| 42788 | White Mills | 310 | 14 |
Official Data Resources
What are common questions about ZIP codes in this county?
What is the population of Hardin?▼
What ZIP codes are in Hardin?▼
What is the median household income in Hardin?▼
Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023). Verify with Census Bureau →
Source: HUD USPS Crosswalk (ZIP-to-county mapping). Verify with HUD →
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology — how this data is sourced, computed, and verified.