Mount Vernon, OH micro area ZIP codes
The Mount Vernon, OH micropolitan statistical area (CBSA 34540) covers 1 county in Ohio and 9 ZIP codes.
- ZIP codes
- 9
- Population
- 62,917
- Avg. median income
- $72,800population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the Mount Vernon, OH area
ZIP codes in the Mount Vernon, OH area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 43005 | Bladensburg | Knox County | 339 | $72,910 | $97,400 |
| 43011 | Centerburg | Knox County | 6,594 | $90,121 | $398,900 |
| 43014 | Danville | Knox County | 3,738 | $66,481 | $284,700 |
| 43019 | Fredericktown | Knox County | 9,445 | $68,104 | $290,500 |
| 43022 | Gambier | Knox County | 3,635 | $94,712 | $379,600 |
| 43028 | Howard | Knox County | 7,799 | $91,186 | $325,800 |
| 43037 | Martinsburg | Knox County | 293 | $69,625 | $196,000 |
| 43048 PO Box | Mount Liberty | Knox County | — | — | — |
| 43050 | Mount Vernon | Knox County | 31,074 | $64,108 | $248,700 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the Mount Vernon, OH micro area?
9 ZIP codes, based on each ZIP code's main county.
Which counties make up the Mount Vernon, OH area?
Knox County.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).