Residential delivery area · Kentucky
ZIP Code 42320: Beaver Dam, KY
ZIP code 42320 uses the postal name Beaver Dam, Kentucky and lies mostly in Ohio County (92% of its land) with the rest in Butler County (Census 2020 ZIP-county file). About 9,100 people live there (Census Bureau, ACS 2020-2024). Median household income is $54,730 (Census Bureau, ACS 2020-2024). By Census place, 2% of its land lies in Beaver Dam; 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Beaver Dam · its only residential ZIP
- County
- Ohio County (92%); Butler County (8%)
- Census places
- Beaver Dam
- House district
- KY-2 119th Congress
- State
- Kentucky
- Time zone
- Central
- Land area
- 148.8 sq mi · 61 people per sq mi
Where is ZIP code 42320?
42320 centers on 37.333°, -86.867° and covers 148.8 square miles of land plus 4.9 of water. It borders 12 ZIP codes: 42354, 42369, 42333, 42273, 42337, 42326, 42370, 42328, 42349, 42347 and more.
The map draws ZIP code areas only. For the streets inside 42320, 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 42320 compare with the rest of Ohio County?
| Measure | 42320 | In Ohio County | In KY |
|---|---|---|---|
| People (ACS 2020-2024) | 9,128 | 1st of 17 | 140th of 780 |
| Median household income | $55k | 6th of 7 | 214th of 310 |
| Median home value | $150k | 4th of 7 | 208th of 320 |
Its median household income is higher than in 21% of U.S. residential ZIP codes, and it is denser than 46% 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 42320?
The 2020 Census counted 8,442 people in 42320; the ACS, which samples households over 2020-2024, estimates 9,128. Between the 2010 and 2020 censuses its population grew 2.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 9,128
- 2020 Census count
- 8,442+2.9% since 2010 (8,205)
- Households
- 3,361
- Median age
- 38.4
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 42320?
Of the 9,128 people the ACS estimates in 42320, 25.7% are under 18 and 17.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.4%), then Hispanic or Latino (12.0%).
- Under 1825.7%
- 18 to 6457.0%
- 65 and older17.3%
- White, not Hispanic85.4%
- Hispanic or Latino12.0%
- Other or two or more2.1%
- Black, not Hispanic0.4%
- 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 42320 earn?
Median household income is $54,730 (ACS 2020-2024), the 6th highest of the 7 ranked ZIP codes in Ohio County. It is not measurably different from 2015-2019 ($50,925 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $54,730
- Income per person
- $29,177
- Below the poverty line
- 14.4%
- Unemployed (of the labor force)
- 8.2%
- Adults 25+ with a bachelor's degree
- 14.0%
- Adjusted gross income per tax return, 2022
- $53,4283,230 returns; wages 75% 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 42320?
FHFA's house price index for 42320, built from repeat sales and appraisals of the same homes, rose 72% from 2015 to 2025 and rose 52% from 2020 to 2025, and moved +9.2% in 2025.
- Median home value (owners' estimate)
- $150,200
- Median gross rent
- $745
- Homes owned by their occupants
- 72.7%
- Housing units
- 3,789
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 42320?
155 business establishments had a location in this ZIP code in 2023, 2 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade36
- Health care and social assistance23
- Accommodation and food services22
- Other services (except public administration)15
- Manufacturing11
- Finance and insurance10
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 42320?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 42354 | McHenry | 283 | $66k | 4.7 mi |
| 42369 | Rockport | 223 | $63k | 6.7 mi |
| 42333 | Cromwell | 644 | $34k | 6.8 mi |
| 42273 | Rochester | 519 | $60k | 8.9 mi |
| 42337 | Drakesboro | 1,683 | $37k | 10.2 mi |
| 42326 | Browder | 283 | $42k | 10.4 mi |
| 42370 | Rosine | 16 | – | 10.6 mi |
| 42328 | Centertown | 1,158 | $58k | 11.9 mi |
| 42349 | Horse Branch | 1,962 | $59k | 12.4 mi |
| 42347 | Hartford | 5,829 | $61k | 13.3 mi |
| 42330 | Central City | 9,367 | $50k | 14.1 mi |
| 42261 | Morgantown | 9,641 | $53k | 14.4 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.