What ZIP codes does Ohio use for mail and package delivery?

Ohio (OH) operates within the 5-digit ZIP prefix range 430xx–459xx. Mail routed to state capital Columbus and key regional centers such as Columbus, Cleveland, Cincinnati adheres to these official USPS boundaries.

Which telephone area codes are valid for Ohio?

Ohio is served by 13 active North American Numbering Plan (NANPA) area codes: 216, 220, 234, 283, 330, 380, 419, 440, 513, 567, 614, 740, 937. Synthetic telephone numbers for Ohio use those area codes with a 555 exchange, which is reserved for fictitious use.

How many counties are in Ohio?

Ohio is divided into 88 counties, including major administrative regions such as Franklin, Cuyahoga, Hamilton, Summit. Generated street addresses use those names.

What postal formatting conventions and addressing quirks are unique to Ohio?

Extensive township vs. municipal corporation overlaps across 88 counties, where township residents receive mail with neighboring city postal names but pay no municipal income tax unless working inside city limits. Industrial Cuyahoga and Franklin County urban grid numbering with strict cardinal quadrant directionals. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.

Are the Ohio addresses generated on this page real places?

No. All street numbers, recipient names, and telephone numbers generated for Ohio are entirely synthetic and randomized for software testing, database seed scripts, and form validation. They use Ohio ZIP codes from public USPS data and real city names, but they do not correspond to real individuals or private residences.

Random Ohio Address Generator

These addresses are randomly generated for software testing. They are not real people’s details: the street number, unit and recipient name are invented, and no record is checked for deliverability.

Randomly generated Ohio mailing addresses for software testing, form validation and staging data. Each record pairs a real Ohio city with a ZIP prefix that serves it and the county that city sits in, then adds a street number, a secondary unit designator and a recipient name that are invented.

Official Ohio Postal & Geographic Reference Specifications

Geographic & Postal Parameter	Official State Specification	Standardization Reference
Postal State Abbreviation	OH	USPS Publication 28 & ISO 3166-2:US
5-Digit ZIP Prefix Range	430xx–459xx	USPS prefix-to-state assignment
Administrative Jurisdictions	88 Total Counties	US Census Bureau regional boundaries
Active Area Codes (NANPA)	`216, 220, 234, 283, 330, 380, 419, 440, 513, 567, 614, 740, 937` (13 total)	North American Numbering Plan Administrator
State Capital	Columbus	US Census Bureau
Primary Time Zone	Eastern Time (America/New_York, UTC-5 / UTC-4 DST)	IANA time zone database

Ohio Postal Geography & Key Cities

ZIP codes and Sectional Center Facilities are derived from public USPS ZIP code data, area codes from the North American Numbering Plan, and county names from US Census Bureau records. Street numbers and recipient names are synthetic, and nothing is checked against an address-verification service.

Cities the generator draws from:

Columbus
Cleveland
Cincinnati
Toledo
Akron
Dayton

Key Counties & Administrative Jurisdictions

County boundaries determine local sales tax jurisdictions in Ohio:

Franklin County
Cuyahoga County
Hamilton County
Summit County
Montgomery County

Ohio Area Codes (OH)

Generated phone numbers use the area codes listed in the reference table above, paired with a 555 exchange so no number can reach a real line. Generate Ohio phone numbers.

Postal Delivery Standards & Format Nuances in Ohio

Extensive township vs. municipal corporation overlaps across 88 counties, where township residents receive mail with neighboring city postal names but pay no municipal income tax unless working inside city limits.
Industrial Cuyahoga and Franklin County urban grid numbering with strict cardinal quadrant directionals.

Ohio Address Examples in USPS Publication 28 Format

Residential Delivery Point:
100 Main St, Apt 4B Columbus, OH 43201-1204

Commercial / Multi-Unit Delivery Point:
Ohio Logistics & Software Corp 500 Enterprise Way, Suite 300 Cleveland, OH 44101-4810

Frequently Asked Questions about Ohio Addresses

What ZIP codes does Ohio use for mail and package delivery?: Ohio (OH) operates within the 5-digit ZIP prefix range 430xx–459xx. Mail routed to state capital Columbus and key regional centers such as Columbus, Cleveland, Cincinnati adheres to these official USPS boundaries.
Which telephone area codes are valid for Ohio?: Ohio is served by 13 active North American Numbering Plan (NANPA) area codes: 216, 220, 234, 283, 330, 380, 419, 440, 513, 567, 614, 740, 937. Synthetic telephone numbers for Ohio use those area codes with a 555 exchange, which is reserved for fictitious use.
How many counties are in Ohio?: Ohio is divided into 88 counties, including major administrative regions such as Franklin, Cuyahoga, Hamilton, Summit. Generated street addresses use those names.
What postal formatting conventions and addressing quirks are unique to Ohio?: Extensive township vs. municipal corporation overlaps across 88 counties, where township residents receive mail with neighboring city postal names but pay no municipal income tax unless working inside city limits. Industrial Cuyahoga and Franklin County urban grid numbering with strict cardinal quadrant directionals. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.
Are the Ohio addresses generated on this page real places?: No. All street numbers, recipient names, and telephone numbers generated for Ohio are entirely synthetic and randomized for software testing, database seed scripts, and form validation. They use Ohio ZIP codes from public USPS data and real city names, but they do not correspond to real individuals or private residences.

Nearby & Bordering States

Explore test address generators for states sharing a geographic border with OH:

Ohio ZIP Prefixes

The first three digits of a ZIP code place an address within Ohio. These are the prefixes assigned to the state:

432xx, 436xx, 441xx, 443xx, 452xx, 454xx

Which processing facility sorts a given prefix is set by the current USPS labeling list L005 and changes as processing is consolidated, so it is not reproduced here. Look up a ZIP prefix to see its state and generate ZIP codes inside it.