Miami County, Ohio ZIP codes
12 ZIP codes are in Miami County, plus 7 that cross in from neighboring counties. It's part of the Dayton-Kettering-Beavercreek, OH metro area.
- ZIP codes
- 12
- Population in these ZIPs
- 105,795
- Avg. median income
- $78,500population-weighted
- Cities & towns
- 11
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Miami County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 45312 | Casstown | 1,086 | $91,842 | $359,400 |
| 45318 | Covington | 5,511 | $73,867 | $239,700 |
| 45326 | Fletcher | 1,446 | $93,472 | $252,500 |
| 45337 | Laura | 1,703 | $108,162 | $259,900 |
| 45339 | Ludlow Falls | 1,057 | $97,750 | $332,800 |
| 45356 | Piqua | 25,237 | $69,188 | $181,700 |
| 45359 | Pleasant Hill | 2,160 | $77,083 | $246,900 |
| 45361 | Potsdam | 253 | $66,250 | $124,300 |
| 45371 | Tipp City | 22,865 | $93,599 | $349,700 |
| 45373 | Troy | 37,565 | $75,742 | $281,900 |
| 45374 PO Box | Troy | — | — | — |
| 45383 | West Milton | 6,912 | $66,620 | $235,900 |
ZIP codes partly in Miami County
These ZIP codes are mostly in a neighboring county but cover part of Miami County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 45304 | Arcanum | Darke County | 7,599 | $78,125 | $245,900 |
| 45308 | Bradford | Darke County | 4,385 | $70,435 | $214,800 |
| 45309 | Brookville | Montgomery County | 11,876 | $75,409 | $273,700 |
| 45317 | Conover | Champaign County | 1,187 | $61,429 | $227,700 |
| 45322 | Englewood | Montgomery County | 20,884 | $75,349 | $227,400 |
| 45344 | New Carlisle | Clark County | 16,979 | $78,471 | $216,300 |
| 45424 | Dayton | Montgomery County | 50,725 | $80,605 | $227,200 |
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
Cities and towns in Miami County
Nearby counties
Frequently asked questions
How many ZIP codes are in Miami County, Ohio?
12 ZIP codes are mainly in Miami County, and 7 more ZIP codes from neighboring areas reach partly into it.
What cities are in Miami County?
ZIP codes in Miami County use the city names Casstown, Covington, Fletcher, Laura, Ludlow Falls, Piqua, Pleasant Hill, Potsdam, Tipp City, Troy and West Milton.
What metro area is Miami County in?
Miami County is part of the Dayton-Kettering-Beavercreek, OH metropolitan statistical area.