ZIP code 45312
Where is ZIP code 45312?
Casstown, Ohio
Miami County · Standard ZIP code
ZIP code 45312 belongs to Casstown, Ohio in Miami County. 45312 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 326 and 937. About 1,086 people live in the 45312 area, where the median household income is $91,842. The closest ZIP codes are 45389 (Christiansburg, 4.5 mi east), 45326 (Fletcher, 5.1 mi north) and 45373 (Troy, 5.5 mi southwest).
| ZIP code | 45312 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Casstown |
| State | Ohio (OH) |
| County | Miami County |
| Time zone | Eastern Time · now |
| Area codes | 326, 937 |
| Coordinates | 40.0716, -84.1088 map |
| 3-digit prefix | 453 |
Population and income in 45312
| Population | 1,086 · lower than 75% of Ohio ZIP codes |
|---|---|
| People per square mile | 40 · lower than 89% of Ohio ZIP codes |
| Median age | 52.7 years · higher than 93% of Ohio ZIP codes |
| Men / women | 54% / 46% |
| Median household income | $91,842 · higher than 83% of Ohio ZIP codes |
| Income per person | $56,478 |
| Below the poverty line | 2.1% |
| Bachelor’s degree or higher | 23% of adults 25+ |
| Median home value | $279,400 · higher than 85% of Ohio ZIP codes |
| Median rent | $1,156 a month |
| Housing units | 518 |
| Households | 484 (2.24 people on average) |
| Owners / renters | 96% / 4.3% |
| Land area | 27.33 sq mi (plus 0.01 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 45312. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 45312
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 45389 | Christiansburg, OH | 4.5 mi E | PO Box only |
| 45326 | Fletcher, OH | 5.1 mi N | Standard |
| 45373 | Troy, OH | 5.5 mi SW | Standard |
| 45317 | Conover, OH | 6.7 mi NE | Standard |
| 45374 | Troy, OH | 6.8 mi W | Unique |
| 43072 | Saint Paris, OH | 8.1 mi E | Standard |
| 45356 | Piqua, OH | 9.3 mi NW | Standard |
| 45371 | Tipp City, OH | 9.5 mi S | Standard |
| 45349 | North Hampton, OH | 10.6 mi SE | PO Box only |
| 45344 | New Carlisle, OH | 10.8 mi SE | Standard |
| 45359 | Pleasant Hill, OH | 12.5 mi W | Standard |
| 43070 | Rosewood, OH | 12.8 mi NE | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 45312 or measure the distance to another ZIP code.
How to address mail to 45312
123 MAIN ST
CASSTOWN OH 45312
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (45312-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 45312?
- 45312 is a Casstown, Ohio ZIP code.
- What county is 45312 in?
- ZIP code 45312 is in Miami County, Ohio.
- What time zone is ZIP code 45312 in?
- 45312 is in the Eastern Time zone (America/New_York).
- What area code is 45312?
- Phone numbers in ZIP code 45312 use area codes 326 and 937.
- What is the population of ZIP code 45312?
- About 1,086 people live in ZIP code 45312, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 45312?
- The median household income in 45312 is $91,842 a year, higher than 83% of Ohio ZIP codes.
- What ZIP codes are near 45312?
- The nearest ZIP codes to 45312 are 45389 (Christiansburg, 4.5 miles), 45326 (Fletcher, 5.1 miles), 45373 (Troy, 5.5 miles) and 45317 (Conover, 6.7 miles).