Warren County, KY ZIP Codes
8 ZIP codes cover all or part of Warren County, Kentucky: 42101, 42104, 42103, 42171, 42122, 42274, 42170 and 42159. The Census Bureau counts 140,918 residents in the county, with a median household income of $65,794 and a median home value of $258,000. Median household income ranges from $48,217 in 42101 to $113,705 in 42122. Its largest communities include Bowling Green, Plano, Smiths Grove, Plum Springs and Woodburn.
Warren County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 140,918 |
| Households | 55,643 |
| Median household income | $65,794 |
| Median home value | $258,000 |
| Median age | 33.3 |
| Median rent | $1,002 |
All 8 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 147,438 |
| Households (sum of ZIP codes) | 58,462 |
| Median household income, range across ZIP codes | $48,217 (42101) to $113,705 (42122) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $67,313 |
| Homeowners | 57.0% |
| Households with kids under 18 | 30.1% |
| Moved in the past year | 20.1% |
| Carrier routes in EDDM2GO's route library | 105 routes, 63,654 homes (8 of 8 ZIP codes) |
Top facts
- Highest median household income in Warren County: 42122 ($113,705)
- Most residents: 42101 (65,421 people)
- Highest homeownership: 42122 (88.9% own their home)
- Most households with kids: 42170 (44.3% of households)
- Most new movers: 42101 (25.0% moved in last year)
- Youngest median age: 42101 (28.1 years)
- Highest median home value: 42103 ($331,400)
Every ZIP code in Warren County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 42101 | Bowling Green | 65,421 | 24,361 | $48,217 | $207,200 | 44.7% | 32.5% | 25.0% | 42 | 29,182 | 89% of its land |
| 42104 | Bowling Green | 42,076 | 17,045 | $75,164 | $306,400 | 61.7% | 30.9% | 18.8% | 27 | 17,886 | 91% of its land |
| 42103 | Bowling Green | 21,911 | 9,944 | $87,689 | $331,400 | 63.0% | 24.6% | 14.7% | 18 | 12,304 | 100% of its land |
| 42171 | Smiths Grove | 6,723 | 2,631 | $70,191 | $187,500 | 76.2% | 29.3% | 17.0% | 8 | 3,412 | 48% of its land |
| 42122 | Alvaton | 5,513 | 1,987 | $113,705 | $297,100 | 88.9% | 35.2% | 11.2% | 5 | 2,559 | 95% of its land |
| 42274 | Rockfield | 2,157 | 929 | $80,704 | $182,100 | 86.0% | 17.5% | 3.8% | 2 | 1,020 | 89% of its land |
| 42170 | Woodburn | 1,938 | 594 | $96,111 | $291,700 | 72.2% | 44.3% | 15.7% | 1 | 602 | 51% of its land |
| 42159 | Oakland | 1,699 | 971 | $66,756 | $264,400 | 66.9% | 10.2% | 0.4% | 2 | 490 | 100% of its land |
A ZIP code is listed for Warren County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Bowling Green — 75,388 residents · 3 ZIP codes
- Plano — 1,290 residents · 1 ZIP code
- Smiths Grove — 786 residents · 1 ZIP code
- Plum Springs — 405 residents · 1 ZIP code
- Woodburn — 319 residents · 1 ZIP code
- Oakland — 280 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Warren County — 8 ZIP codes ranked
- ZIP codes with the highest home values in Warren County — 8 ZIP codes ranked
- ZIP codes with the highest homeownership in Warren County — 8 ZIP codes ranked
- ZIP codes with the most families with kids in Warren County — 8 ZIP codes ranked
- ZIP codes with the most new movers in Warren County — 8 ZIP codes ranked
- Youngest ZIP codes in Warren County — 8 ZIP codes ranked
- Oldest ZIP codes in Warren County — 8 ZIP codes ranked
- Fastest-growing ZIP codes in Warren County — 8 ZIP codes ranked
Price a mailing to Warren County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Warren County, KY?
- 42101, 42104, 42103, 42171, 42122, 42274, 42170 and 42159. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Warren County?
- 140,918 residents in 55,643 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Warren County?
- $65,794 for the county as a whole. Its ZIP codes range from $48,217 (42101) to $113,705 (42122).
- Which Warren County ZIP code has the highest median household income?
- 42122, at $113,705, among ZIP codes with at least 1,000 residents. See the full ranking of Warren County ZIP codes by income.
- How many carrier routes and mailboxes are in Warren County?
- For the 8 of 8 ZIP codes in EDDM2GO's stored route library: 105 carrier routes reaching 63,654 residential and 3,798 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.