Residential delivery area · Kentucky
ZIP Code 40330: Harrodsburg, KY
ZIP code 40330 uses the postal name Harrodsburg, Kentucky and lies mostly in Mercer County (88% of its land) with the rest in Washington County (Census 2020 ZIP-county file). About 21,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $63,992 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Harrodsburg (3%) and Burgin (under 1%); 97% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Harrodsburg · its only residential ZIP
- County
- Mercer County (88%); Washington County (12%)
- Census places
- Harrodsburg (3%); Burgin (under 1%)
- House districts
- KY-6 (88%), KY-1 (12%) 119th Congress, by share of land
- State
- Kentucky
- Time zone
- Eastern
- Land area
- 220.7 sq mi · 96 people per sq mi
Where is ZIP code 40330?
40330 centers on 37.788°, -84.888° and covers 220.7 square miles of land plus 3.3 of water. It borders 11 ZIP codes: 40310, 40372, 40040, 40468, 40422, 40390, 40078, 40342, 40383, 40069 and more.
The map draws ZIP code areas only. For the streets inside 40330, 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 40330 compare with the rest of Mercer County?
| Measure | 40330 | In Mercer County | In KY |
|---|---|---|---|
| People (ACS 2020-2024) | 21,250 | 1st of 4 | 70th of 780 |
| Median household income | $64k | 2nd of 2 | 142nd of 310 |
| Median home value | $200k | 1st of 1 | 107th of 320 |
Its median household income is higher than in 37% of U.S. residential ZIP codes, and it is denser than 53% 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 40330?
The 2020 Census counted 20,440 people in 40330; the ACS, which samples households over 2020-2024, estimates 21,250. Between the 2010 and 2020 censuses its population grew 5.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 21,250
- 2020 Census count
- 20,440+5.7% since 2010 (19,334)
- Households
- 8,532
- Median age
- 42.5
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 40330?
Of the 21,250 people the ACS estimates in 40330, 21.8% are under 18 and 19.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (89.5%).
- Under 1821.8%
- 18 to 6459.1%
- 65 and older19.1%
- White, not Hispanic89.5%
- Other or two or more3.5%
- Black, not Hispanic3.4%
- Hispanic or Latino3.4%
- Asian, 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 40330 earn?
Median household income is $63,992 (ACS 2020-2024). It is not measurably different from 2015-2019 ($64,216 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $63,992
- Income per person
- $33,373
- Below the poverty line
- 10.7%
- Unemployed (of the labor force)
- 4.3%
- Adults 25+ with a bachelor's degree
- 25.3%
- Adjusted gross income per tax return, 2022
- $60,8948,950 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 40330?
FHFA's house price index for 40330, built from repeat sales and appraisals of the same homes, rose 94% from 2015 to 2025 and rose 58% from 2020 to 2025, and moved +1.0% in 2025.
- Median home value (owners' estimate)
- $199,500
- Median gross rent
- $824
- Homes owned by their occupants
- 75.8%
- Housing units
- 9,674
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 40330?
328 business establishments had a location in this ZIP code in 2023, 24 more than in 2018; the most are in other services (except public administration) (ZIP Code Business Patterns).
- Other services (except public administration)51
- Retail trade47
- Construction39
- Health care and social assistance37
- Accommodation and food services32
- Professional, scientific, and technical services31
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 40330?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 40310 | Burgin | 471 | $57k | 6.8 mi |
| 40372 | Salvisa | 2,090 | $74k | 8.6 mi |
| 40040 | Mackville | 779 | – | 9.9 mi |
| 40468 | Perryville | 2,084 | $64k | 10.7 mi |
| 40422 | Danville | 25,950 | $60k | 10.9 mi |
| 40390 | Wilmore | 7,429 | $74k | 12.5 mi |
| 40078 | Willisburg | 2,661 | $54k | 14.3 mi |
| 40342 | Lawrenceburg | 23,963 | $74k | 15.7 mi |
| 40383 | Versailles | 24,793 | $85k | 17.2 mi |
| 40069 | Springfield | 8,015 | $71k | 18.0 mi |
| 40444 | Lancaster | 14,276 | $63k | 18.9 mi |
| 40440 | Junction City | 2,428 | $55k | 14.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.