Ohio has 729,290 companies. The cities with the most companies are Cleveland, Columbus, Cincinnati, Dayton, Toledo. The most popular type of business in Ohio is Uncategorized, followed by Nurses, Contractors, Legal, Churches.
- Aberdeen
- Ada
- Adamsville
- Addyston
- Adelphi
- Adena
- Akron
- Albany
- Alexandria
- Alger
- Alliance
- Alvada
- Alvordton
- Amanda
- Amelia
- Amesville
- Amherst
- Amsterdam
- Anderson
- Andover
- Anna
- Ansonia
- Antwerp
- Apple Creek
- Arcadia
- Arcanum
- Archbold
- Arlington
- Ashland
- Ashley
- Ashtabula
- Ashville
- Athens
- Attica
- Atwater
- Aurora
- Austinburg
- Austintown
- Avon
- Avon Lake
- Bainbridge
- Baltic
- Baltimore
- Barberton
- Barlow
- Barnesville
- Bascom
- Batavia
- Bath
- Bay Village
- Beach City
- Beachwood
- Beallsville
- Beaver
- Beavercreek
- Beavercreek Township
- Beaverdam
- Bedford
- Bedford Heights
- Bedford Hts
- Bellaire
- Bellbrook
- Belle Center
- Bellefontaine
- Bellevue
- Bellville
- Belmont
- Beloit
- Belpre
- Benton Ridge
- Berea
- Bergholz
- Berkey
- Berlin
- Berlin Center
- Berlin Heights
- Bethel
- Bethesda
- Bettsville
- Beverly
- Bexley
- Bidwell
- Big Prairie
- Birmingham
- Blacklick
- Bladensburg
- Blanchester
- Bloomdale
- Bloomingburg
- Bloomingdale
- Bloomville
- Blue Ash
- Blue Creek
- Blue Rock
- Bluffton
- Boardman
- Bolivar
- Botkins
- Bowerston
- Bowersville
- Bowling Green
- Bradford
- Bradner
- Brecksville
- Bremen
- Brewster
- Brice
- Bridgeport
- Brilliant
- Brinkhaven
- Bristolville
- Broadview Heights
- Broadview Hts
- Brook Park
- Brookfield
- Brooklyn
- Brooklyn Heights
- Brookpark
- Brookville
- Brunswick
- Bryan
- Buckeye Lake
- Buckland
- Bucyrus
- Buffalo
- Burbank
- Burghill
- Burgoon
- Burkettsville
- Burton
- Butler
- Byesville
- Cable
- Cadiz
- Cairo
- Calcutta
- Caldwell
- Caledonia
- Cambridge
- Camden
- Camp Dennison
- Campbell
- Canal Fulton
- Canal Winchester
- Canfield
- Canton
- Cardington
- Carey
- Carlisle
- Carroll
- Carrollton
- Casstown
- Castalia
- Catawba
- Cecil
- Cedarville
- Celina
- Centerburg
- Centerville
- Chagrin Falls
- Chandlersville
- Chardon
- Chauncey
- Chesapeake
- Cheshire
- Chesterhill
- Chesterland
- Chesterville
- Chickasaw
- Chillicothe
- Chippewa Lake
- Christiansburg
- Cincinnati
- Circleville
- Clarington
- Clarksburg
- Clarksville
- Clayton
- Cleveland
- Cleveland Heights
- Cleveland Hts
- Cleves
- Clinton
- Cloverdale
- Clyde
- Coal Grove
- Coalton
- Coldwater
- College Corner
- Collins
- Columbia Station
- Columbiana
- Columbus
- Columbus Grove
- Commercial Point
- Concord Twp
- Conesville
- Conneaut
- Conover
- Continental
- Convoy
- Coolville
- Copley
- Corning
- Cortland
- Coshocton
- Covington
- Creola
- Crestline
- Creston
- Cridersville
- Crooksville
- Croton
- Crown City
- Cumberland
- Curtice
- Custar
- Cutler
- Cuyahoga Falls
- Cuyahoga Fls
- Cygnet
- Dalton
- Damascus
- Danville
- Dayton
- De Graff
- Deerfield
- Defiance
- Delaware
- Dellroy
- Delphos
- Delta
- Dennison
- Deshler
- Dexter City
- Diamond
- Dillonvale
- Dola
- Donnelsville
- Dorset
- Dover
- Doylestown
- Dresden
- Dublin
- Duncan Falls
- Dundee
- Dunkirk
- East Canton
- East Cleveland
- East Liberty
- East Liverpool
- East Palestine
- East Rochester
- East Sparta
- East Springfield
- Eastlake
- Eaton
- Edgerton
- Edison
- Edon
- Eldorado
- Elida
- Elmore
- Elmwood Place
- Elyria
- Empire
- Englewood
- Enon
- Etna
- Euclid
- Fairborn
- Fairfield
- Fairlawn
- Fairport Harbor
- Fairview Park
- Farmdale
- Farmersville
- Fayette
- Fayetteville
- Felicity
- Findlay
- Fleming
- Fletcher
- Flushing
- Forest
- Fort Jennings
- Fort Loramie
- Fort Recovery
- Fostoria
- Fowler
- Frankfort
- Franklin
- Franklin Furnace
- Frazeysburg
- Fredericksburg
- Fredericktown
- Freeport
- Fremont
- Fresno
- Fulton
- Gahanna
- Galena
- Galion
- Gallipolis
- Galloway
- Gambier
- Garfield Heights
- Garfield Hts
- Garrettsville
- Gates Mills
- Geneva
- Genoa
- Georgetown
- Germantown
- Gettysburg
- Gibsonburg
- Gilboa
- Girard
- Glandorf
- Glendale
- Glenford
- Glenmont
- Glouster
- Gnadenhutten
- Goshen
- Grafton
- Grand Rapids
- Grand River
- Grandview Heights
- Granville
- Gratiot
- Gratis
- Graysville
- Graytown
- Green
- Green Camp
- Green Springs
- Greenfield
- Greentown
- Greenville
- Greenwich
- Grove City
- Groveport
- Grover Hill
- Guysville
- Hamden
- Hamersville
- Hamilton
- Hamler
- Hammondsville
- Hannibal
- Hanoverton
- Harpster
- Harrisburg
- Harrison
- Harrod
- Hartville
- Harveysburg
- Haskins
- Haviland
- Hayesville
- Heath
- Hebron
- Helena
- Hicksville
- Highland Heights
- Highland Hills
- Hilliard
- Hillsboro
- Hinckley
- Hiram
- Hockingport
- Holgate
- Holland
- Hollansburg
- Holmesville
- Homerville
- Homeworth
- Hopedale
- Hopewell
- Houston
- Howard
- Hubbard
- Huber Heights
- Hudson
- Huntsburg
- Huntsville
- Huron
- Independence
- Irondale
- Ironton
- Jackson
- Jackson Center
- Jacobsburg
- Jamestown
- Jefferson
- Jeffersonville
- Jenera
- Jeromesville
- Jerusalem
- Jewett
- Johnstown
- Junction City
- Kalida
- Kansas
- Kelleys Island
- Kensington
- Kent
- Kenton
- Kettering
- Kidron
- Killbuck
- Kimbolton
- Kings Mills
- Kingston
- Kingsville
- Kinsman
- Kirkersville
- Kirtland
- Kitts Hill
- La Rue
- Lafayette
- Lagrange
- Lake Milton
- Lake Waynoka
- Lakemore
- Lakeside
- Lakeside Marblehead
- Lakeview
- Lakeville
- Lakewood
- Lancaster
- Langsville
- Latham
- Laura
- Laurelville
- Leavittsburg
- Lebanon
- Leesburg
- Leetonia
- Leipsic
- Lewis Center
- Lewisburg
- Lewistown
- Lewisville
- Lexington
- Liberty Center
- Liberty Township
- Liberty Townshp
- Liberty Twp
- Lima
- Lindsey
- Lisbon
- Litchfield
- Lithopolis
- Little Hocking
- Lockbourne
- Lockland
- Lodi
- Logan
- London
- Londonderry
- Long Bottom
- Lorain
- Lore City
- Loudonville
- Louisville
- Loveland
- Lowell
- Lowellville
- Lower Salem
- Lucas
- Lucasville
- Luckey
- Ludlow Falls
- Lynchburg
- Lyndhurst
- Lyons
- Macedonia
- Madeira
- Madison
- Magnetic Springs
- Magnolia
- Maineville
- Malinta
- Malta
- Malvern
- Manchester
- Mansfield
- Mantua
- Maple Heights
- Maplewood
- Marblehead
- Marengo
- Maria Stein
- Marietta
- Marion
- Mark Center
- Marshallville
- Martin
- Martins Ferry
- Martinsburg
- Martinsville
- Marysville
- Mason
- Massillon
- Masury
- Maumee
- Mayfield Heights
- Mayfield Hts
- Mayfield Village
- Mc Arthur
- Mc Clure
- Mc Comb
- Mc Cutchenville
- Mc Dermott
- Mc Donald
- McConnelsville
- Mechanicsburg
- Mechanicstown
- Medina
- Medway
- Mendon
- Mentor
- Mentor On The Lake
- Metamora
- Miamisburg
- Miamitown
- Miamiville
- Middle Bass
- Middle Point
- Middleburg Heights
- Middlefield
- Middleport
- Middletown
- Midland
- Midvale
- Milan
- Milford
- Milford Center
- Millbury
- Miller City
- Millersburg
- Millersport
- Millfield
- Mineral City
- Mineral Ridge
- Minerva
- Minford
- Mingo Junction
- Minster
- Mogadore
- Monclova
- Monroe
- Monroeville
- Montgomery
- Montpelier
- Montville
- Moraine
- Moreland Hills
- Morral
- Morrow
- Moscow
- Mount Blanchard
- Mount Cory
- Mount Eaton
- Mount Gilead
- Mount Healthy
- Mount Hope
- Mount Orab
- Mount Perry
- Mount Pleasant
- Mount Sterling
- Mount Vernon
- Mount Victory
- Mowrystown
- Mt Sterling
- Munroe Falls
- Murray City
- N Canton
- Napoleon
- Nashport
- Nashville
- Navarre
- Neapolis
- Negley
- Nelsonville
- Nevada
- New Albany
- New Athens
- New Bavaria
- New Bloomington
- New Boston
- New Bremen
- New Carlisle
- New Concord
- New Franklin
- New Haven
- New Holland
- New Knoxville
- New Lebanon
- New Lexington
- New London
- New Madison
- New Marshfield
- New Matamoras
- New Middletown
- New Paris
- New Philadelphia
- New Plymouth
- New Richmond
- New Riegel
- New Springfield
- New Straitsville
- New Vienna
- New Washington
- New Waterford
- New Weston
- Newark
- Newburgh Heights
- Newbury
- Newcomerstown
- Newport
- Newton Falls
- Newtonsville
- Newtown
- Ney
- Niles
- North Baltimore
- North Bend
- North Benton
- North Bloomfield
- North Canton
- North Fairfield
- North Georgetown
- North Hampton
- North Jackson
- North Kingsville
- North Lawrence
- North Lewisburg
- North Lima
- North Olmsted
- North Randall
- North Ridgeville
- North Robinson
- North Royalton
- North Star
- Northfield
- Northwood
- Norton
- Norwalk
- Norwich
- Norwood
- Nova
- Novelty
- Oak Harbor
- Oak Hill
- Oakwood
- Oakwood Village
- Oberlin
- Obetz
- Ohio City
- Okeana
- Old Fort
- Old Washington
- Olmsted Falls
- Olmsted Twp
- Ontario
- Oregon
- Oregonia
- Orient
- Orrville
- Orwell
- Osgood
- Ostrander
- Ottawa
- Ottawa Hills
- Ottoville
- Otway
- Owensville
- Oxford
- Painesville
- Pandora
- Paris
- Parkman
- Parma
- Parma Heights
- Pataskala
- Patriot
- Paulding
- Payne
- Pedro
- Peebles
- Pemberville
- Peninsula
- Pepper Pike
- Perry
- Perrysburg
- Perrysville
- Petersburg
- Pettisville
- Phillipsburg
- Philo
- Pickerington
- Piedmont
- Pierpont
- Piketon
- Pioneer
- Piqua
- Pitsburg
- Plain City
- Pleasant City
- Pleasant Hill
- Pleasant Plain
- Pleasantville
- Plymouth
- Poland
- Polk
- Pomeroy
- Port Clinton
- Port Jefferson
- Port Washington
- Portage
- Portland
- Portsmouth
- Powell
- Powhatan Point
- Proctorville
- Prospect
- Put In Bay
- Quaker City
- Quincy
- Racine
- Radnor
- Randolph
- Ravenna
- Rawson
- Ray
- Rayland
- Raymond
- Reading
- Reedsville
- Reminderville
- Reno
- Republic
- Reynoldsburg
- Richfield
- Richmond
- Richmond Heights
- Richmond Hts
- Richwood
- Ridgeville Corners
- Ridgeway
- Rio Grande
- Ripley
- Risingsun
- Rittman
- Roaming Shores
- Robertsville
- Rock Creek
- Rockbridge
- Rockford
- Rocky River
- Rogers
- Rome
- Rootstown
- Roseville
- Rosewood
- Rossburg
- Rossford
- Rossville
- Rudolph
- Rushsylvania
- Rushville
- Russells Point
- Russellville
- Russia
- Rutland
- Sabina
- Sagamore Hills
- Saint Bernard
- Saint Clairsville
- Saint Henry
- Saint Louisville
- Saint Marys
- Saint Paris
- Salem
- Salesville
- Salineville
- Sandusky
- Sarahsville
- Sardinia
- Sardis
- Scio
- Sciotoville
- Scott
- Scottown
- Seaman
- Sebring
- Sedalia
- Senecaville
- Seven Hills
- Seven Mile
- Seville
- Shade
- Shadyside
- Shaker Heights
- Shaker Hts
- Sharon Center
- Sharonville
- Shawnee
- Shawnee Hills
- Sheffield Lake
- Sheffield Village
- Shelby
- Sherrodsville
- Sherwood
- Shiloh
- Shreve
- Sidney
- Silver Lake
- Sinking Spring
- Smithfield
- Smithville
- Solon
- Somerset
- Somerville
- South Amherst
- South Bloomfield
- South Bloomingville
- South Charleston
- South Euclid
- South Lebanon
- South Point
- South Salem
- South Solon
- South Vienna
- South Webster
- South Zanesville
- Southington
- Spencer
- Spencerville
- Spring Valley
- Springboro
- Springdale
- Springfield
- St Clairsville
- Sterling
- Steubenville
- Stewart
- Stockport
- Stone Creek
- Stony Ridge
- Stout
- Stoutsville
- Stow
- Strasburg
- Streetsboro
- Strongsville
- Struthers
- Stryker
- Sugar Grove
- Sugarcreek
- Sugarcrk Twp
- Sullivan
- Summerfield
- Sunbury
- Swanton
- Sycamore
- Sylvania
- Syracuse
- Taft
- Tallmadge
- Terrace Park
- The Plains
- Thompson
- Thornville
- Thurman
- Thurston
- Tiffin
- Tiltonsville
- Tipp City
- Tippecanoe
- Tiro
- Toledo
- Toronto
- Trenton
- Trimble
- Trotwood
- Troy
- Tuppers Plains
- Tuscarawas
- Twinsburg
- Uhrichsville
- Union
- Union City
- Uniontown
- Uniopolis
- University Heights
- Upper Arlington
- Upper Sandusky
- Urbana
- Urbancrest
- Utica
- Valley City
- Valley View
- Van Buren
- Van Wert
- Vandalia
- Vanlue
- Venedocia
- Vermilion
- Verona
- Versailles
- Vickery
- Vienna
- Village Of Indian Springs
- Vincent
- Vinton
- Wadsworth
- Wakeman
- Walbridge
- Waldo
- Walhonding
- Walnut Creek
- Walnut Hills
- Walton Hills
- Wapakoneta
- Warren
- Warrensville Heights
- Warsaw
- Washington Court House
- Washington Township
- Washingtonville
- Waterford
- Waterville
- Wauseon
- Waverly
- Wayne
- Waynesburg
- Waynesfield
- Waynesville
- Wellington
- Wellston
- Wellsville
- West Alexandria
- West Carrollton
- West Chester
- West Elkton
- West Farmington
- West Jefferson
- West Lafayette
- West Liberty
- West Manchester
- West Mansfield
- West Milton
- West Portsmouth
- West Salem
- West Union
- West Unity
- Westerville
- Westfield Center
- Westlake
- Weston
- Wharton
- Wheelersburg
- Whipple
- Whitehall
- Whitehouse
- Wickliffe
- Wilberforce
- Wilkesville
- Willard
- Williamsburg
- Williamsfield
- Williamsport
- Willoughby
- Willoughby Hills
- Willow Wood
- Willowick
- Willshire
- Wilmington
- Wilmot
- Wiloughby Hls
- Winchester
- Windham
- Windsor
- Winesburg
- Wintersville
- Woodmere
- Woodsfield
- Woodstock
- Woodville
- Wooster
- Worthington
- Wpafb
- Wright Patterson Afb
- Wyoming
- Xenia
- Yellow Springs
- Yorkshire
- Yorkville
- Youngstown
- Zaleski
- Zanesfield
- Zanesville
- Zoar
- Zoarville