Knox County, OH ZIP Codes
14 ZIP codes cover all or part of Knox County, Ohio. The Census Bureau counts 63,142 residents in the county, with a median household income of $73,878 and a median home value of $239,400. Median household income ranges from $60,266 in 43822 to $94,712 in 43022. Its largest communities include Mount Vernon, Apple Valley, Fredericktown, Gambier and Centerburg.
Knox County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 63,142 |
| Households | 23,491 |
| Median household income | $73,878 |
| Median home value | $239,400 |
| Median age | 39.4 |
| Median rent | $950 |
All 14 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 79,917 |
| Households (sum of ZIP codes) | 29,802 |
| Median household income, range across ZIP codes | $60,266 (43822) to $94,712 (43022) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $72,214 |
| Homeowners | 75.8% |
| Households with kids under 18 | 28.8% |
| Moved in the past year | 9.1% |
| Carrier routes in EDDM2GO's route library | 57 routes, 29,462 homes (11 of 14 ZIP codes) |
Top facts
- Highest median household income in Knox County: 43022 ($94,712)
- Most residents: 43050 (31,074 people)
- Highest homeownership: 43028 (91.6% own their home)
- Most households with kids: 43014 (37.4% of households)
- Most new movers: 43022 (34.4% moved in last year)
- Youngest median age: 43022 (21.9 years)
- Highest median home value: 43022 ($315,900)
Every ZIP code in Knox County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 43050 | Mount Vernon | 31,074 | 12,335 | $64,108 | $220,300 | 67.5% | 29.0% | 9.4% | 21 | 13,526 | 99% of its land |
| 43019 | Fredericktown | 9,445 | 3,435 | $68,104 | $206,800 | 82.2% | 30.1% | 6.4% | 6 | 3,795 | 69% of its land |
| 43028 | Howard | 7,799 | 3,006 | $91,186 | $273,000 | 91.6% | 22.4% | 10.6% | 7 | 3,731 | 100% of its land |
| 43011 | Centerburg | 6,594 | 2,551 | $90,121 | $315,600 | 90.0% | 29.6% | 4.1% | 5 | 2,711 | 52% of its land |
| 43080 | Utica | 5,321 | 1,883 | $87,301 | $232,300 | 79.1% | 35.9% | 6.1% | 4 | 1,833 | 40% of its land |
| 43822 | Frazeysburg | 5,095 | 2,013 | $60,266 | $207,300 | 65.2% | 28.2% | 7.6% | 4 | 1,857 | 11% of its land |
| 44822 | Butler | 3,995 | 1,163 | $72,159 | $245,700 | 80.2% | 37.1% | 7.9% | 3 | 1,162 | 41% of its land |
| 43014 | Danville | 3,738 | 1,120 | $66,481 | $220,900 | 76.5% | 37.4% | 3.2% | 3 | 1,008 | 94% of its land |
| 43022 | Gambier | 3,635 | 849 | $94,712 | $315,900 | 80.6% | 17.6% | 34.4% | 2 | 700 | 100% of its land |
| 44628 | Glenmont | 1,270 | 522 | $61,518 | $183,200 | 81.0% | 24.5% | 4.7% | — | — | 33% of its land |
| 43006 | Brinkhaven | 701 | 308 | $63,152 | $186,000 | 71.1% | 30.5% | 19.0% | 1 | 224 | 10% of its land |
| 43843 | Walhonding | 618 | 318 | $61,378 | $178,000 | 86.8% | 8.5% | 5.2% | — | — | 29% of its land |
| 43005 | Bladensburg | 339 | 176 | $72,910 | $97,400 | 56.3% | 24.4% | 0.0% | — | — | 100% of its land |
| 43037 | Martinsburg | 293 | 123 | $69,625 | $273,400 | 80.5% | 17.1% | 1.7% | 1 | 52 | 100% of its land |
A ZIP code is listed for Knox 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
- Mount Vernon — 17,052 residents · 1 ZIP code
- Apple Valley — 5,548 residents · 1 ZIP code
- Fredericktown — 2,652 residents · 1 ZIP code
- Gambier — 2,126 residents · 1 ZIP code
- Centerburg — 1,839 residents · 1 ZIP code
- Danville — 615 residents · 1 ZIP code
- South Mount Vernon — 589 residents · 1 ZIP code
- Martinsburg — 303 residents · 2 ZIP codes
- Bladensburg — 300 residents · 1 ZIP code
- Howard — 269 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Knox County — 10 ZIP codes ranked
- ZIP codes with the highest home values in Knox County — 10 ZIP codes ranked
- ZIP codes with the highest homeownership in Knox County — 10 ZIP codes ranked
- ZIP codes with the most families with kids in Knox County — 10 ZIP codes ranked
- ZIP codes with the most new movers in Knox County — 10 ZIP codes ranked
- Youngest ZIP codes in Knox County — 10 ZIP codes ranked
- Oldest ZIP codes in Knox County — 10 ZIP codes ranked
- Fastest-growing ZIP codes in Knox County — 9 ZIP codes ranked
Price a mailing to Knox County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Knox County, OH?
- 43050, 43019, 43028, 43011, 43080, 43822, 44822, 43014, 43022, 44628, 43006, 43843, 43005 and 43037. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Knox County?
- 63,142 residents in 23,491 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Knox County?
- $73,878 for the county as a whole. Its ZIP codes range from $60,266 (43822) to $94,712 (43022).
- Which Knox County ZIP code has the highest median household income?
- 43022, at $94,712, among ZIP codes with at least 1,000 residents. See the full ranking of Knox County ZIP codes by income.
- How many carrier routes and mailboxes are in Knox County?
- For the 11 of 14 ZIP codes in EDDM2GO's stored route library: 57 carrier routes reaching 29,462 residential and 1,137 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.