What city is ZIP code 45018?

45018 is a Fairfield, Ohio ZIP code. Hamilton is also accepted as the city name.

What county is 45018 in?

ZIP code 45018 is in Butler County, Ohio.

What time zone is ZIP code 45018 in?

45018 is in the Eastern Time zone (America/New_York).

What area code is 45018?

Phone numbers in ZIP code 45018 use area code 513.

Can I use 45018 for a street address?

No. 45018 is only for PO Boxes. Street addresses in Fairfield use 45014.

What ZIP codes are near 45018?

The nearest ZIP codes to 45018 are 45012 (Hamilton, 0 miles), 45013 (Hamilton, 2.3 miles), 45062 (Seven Mile, 2.9 miles) and 45055 (Overpeck, 3.3 miles).

ZIP code 45018

Where is ZIP code 45018?

Fairfield, Ohio

Butler County · PO Box only ZIP code

ZIP code 45018 belongs to Fairfield, Ohio in Butler County. 45018 is a PO Box only ZIP code: it is used for post office boxes at the Fairfield post office, not for street addresses. It is in the Eastern Time zone and uses area code 513. The closest ZIP codes are 45012 (Hamilton, 0 mi north), 45013 (Hamilton, 2.3 mi west) and 45062 (Seven Mile, 2.9 mi northeast).

ZIP code	45018
Type	PO Box only (no street delivery)
Status	Active
City	Fairfield
Also accepted	Hamilton
State	Ohio (OH)
County	Butler County
Time zone	Eastern Time · now
Area code	513
Coordinates	39.441, -84.5757 map
3-digit prefix	450

The Census Bureau doesn’t publish population figures for po box only ZIP codes because nobody lives at a PO Box or a single organization’s address. For figures about the area, see the nearby standard ZIP codes below.

ZIP codes near 45018

ZIP code	City	Distance	Type
45012	Hamilton, OH	0 mi N	PO Box only
45013	Hamilton, OH	2.3 mi W	Standard
45062	Seven Mile, OH	2.9 mi NE	PO Box only
45055	Overpeck, OH	3.3 mi E	PO Box only
45011	Hamilton, OH	3.8 mi SE	Standard
45004	Collinsville, OH	5.4 mi N	PO Box only
45015	Hamilton, OH	6.6 mi S	Standard
45067	Trenton, OH	6.7 mi NE	Standard
45014	Fairfield, OH	8 mi S	Standard
45064	Somerville, OH	8.3 mi N	Standard
45061	Ross, OH	9.7 mi SW	PO Box only
45056	Oxford, OH	10.1 mi NW	Standard

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 45018 or measure the distance to another ZIP code.

How to address mail to 45018

JANE SMITH
PO BOX 123
FAIRFIELD OH 45018

Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts HAMILTON as the city name for 45018. Adding the 4-digit ZIP+4 code (45018-XXXX) helps mail sort faster but isn’t required.

Other ZIP codes in Fairfield, OH

45014

All Fairfield ZIP codes with population and income →

Questions

What city is ZIP code 45018?: 45018 is a Fairfield, Ohio ZIP code. Hamilton is also accepted as the city name.
What county is 45018 in?: ZIP code 45018 is in Butler County, Ohio.
What time zone is ZIP code 45018 in?: 45018 is in the Eastern Time zone (America/New_York).
What area code is 45018?: Phone numbers in ZIP code 45018 use area code 513.
Can I use 45018 for a street address?: No. 45018 is only for PO Boxes. Street addresses in Fairfield use 45014.
What ZIP codes are near 45018?: The nearest ZIP codes to 45018 are 45012 (Hamilton, 0 miles), 45013 (Hamilton, 2.3 miles), 45062 (Seven Mile, 2.9 miles) and 45055 (Overpeck, 3.3 miles).