ZIP code 45123
Where is ZIP code 45123?
Greenfield, Ohio
Highland County · Standard ZIP code
ZIP code 45123 belongs to Greenfield, Ohio in Highland County. 45123 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 220, 326, 740 and 937. About 8,740 people live in the 45123 area, where the median household income is $62,404. The closest ZIP codes are 45681 (South Salem, 7 mi southeast), 45135 (Leesburg, 8.5 mi west) and 45628 (Frankfort, 10.4 mi east).
| ZIP code | 45123 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Greenfield |
| Also accepted | Ross County |
| State | Ohio (OH) |
| County | Highland County |
| Time zone | Eastern Time · now |
| Area codes | 220, 326, 740, 937 |
| Coordinates | 39.3478, -83.3898 map |
| 3-digit prefix | 451 |
Population and income in 45123
| Population | 8,740 · higher than 66% of Ohio ZIP codes |
|---|---|
| People per square mile | 82 · lower than 70% of Ohio ZIP codes |
| Median age | 36.8 years · lower than 77% of Ohio ZIP codes |
| Men / women | 47% / 53% |
| Median household income | $62,404 · lower than 66% of Ohio ZIP codes |
| Income per person | $29,397 |
| Below the poverty line | 18% |
| Bachelor’s degree or higher | 14% of adults 25+ |
| Median home value | $161,700 · lower than 62% of Ohio ZIP codes |
| Median rent | $756 a month |
| Housing units | 3,806 |
| Households | 3,313 (2.6 people on average) |
| Owners / renters | 68% / 32% |
| Land area | 106.76 sq mi (plus 1.21 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 45123. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 45123
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 45681 | South Salem, OH | 7 mi SE | Standard |
| 45135 | Leesburg, OH | 8.5 mi W | Standard |
| 45628 | Frankfort, OH | 10.4 mi E | Standard |
| 45132 | Highland, OH | 11.1 mi W | PO Box only |
| 45612 | Bainbridge, OH | 11.1 mi SE | Standard |
| 45624 | Cynthiana, OH | 12.2 mi S | PO Box only |
| 45617 | Bourneville, OH | 13.2 mi E | PO Box only |
| 43160 | Washington Court House, OH | 13.5 mi N | Standard |
| 43115 | Clarksburg, OH | 15.9 mi NE | Standard |
| 45159 | New Vienna, OH | 16 mi W | Standard |
| 43145 | New Holland, OH | 16.4 mi NE | Standard |
| 45133 | Hillsboro, OH | 17 mi SW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 45123 or measure the distance to another ZIP code.
How to address mail to 45123
123 MAIN ST
GREENFIELD OH 45123
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts ROSS COUNTY as the city name for 45123. Avoid Rainsboro: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (45123-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 45123?
- 45123 is a Greenfield, Ohio ZIP code. Ross County is also accepted as the city name.
- What county is 45123 in?
- ZIP code 45123 is in Highland County, Ohio.
- What time zone is ZIP code 45123 in?
- 45123 is in the Eastern Time zone (America/New_York).
- What area code is 45123?
- Phone numbers in ZIP code 45123 use area codes 220, 326, 740 and 937.
- What is the population of ZIP code 45123?
- About 8,740 people live in ZIP code 45123, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 45123?
- The median household income in 45123 is $62,404 a year, lower than 66% of Ohio ZIP codes.
- What ZIP codes are near 45123?
- The nearest ZIP codes to 45123 are 45681 (South Salem, 7 miles), 45135 (Leesburg, 8.5 miles), 45628 (Frankfort, 10.4 miles) and 45132 (Highland, 11.1 miles).