Place Unit Type Title Containing Unit
City or Town Onancock, VA Accomack County, VA
City or Town Onarga, IL Iroquois County, IL
County Oneida County, NY New York
City or Town Oneida, IL Knox County, IL
County Onondaga County, NY New York
County Onslow County, NC North Carolina
County Ontario County, NY New York
County Ontonagon County, MI Michigan
City or Town Opelousas, LA St. Landry Parish, LA
City or Town Oquawka, IL Henderson County, IL
County Orange County, FL Florida
County Orange County, IN Indiana
County Orange County, NC North Carolina
County Orange County, NY New York
County Orange County, TX Texas
County Orange County, VA Virginia
County Orange County, VT Vermont
City or Town Orange, NJ Essex County, NJ
City or Town Orange, OH Cuyahoga County, OH
City or Town Orange, VA Orange County, VA
County Orangeburg District, SC South Carolina
State or Province Oregon United States of America
City or Town Oregon City OR Clackamas County, OR
County Oregon County, MO Missouri
City or Town Oregon, OH Lucas County, OH
City or Town Orford, NH Grafton County, NH
County Orleans County, NY New York
County Orleans County, VT Vermont
County Orleans Parish, LA Louisiana
County Ormsby County, NV Nevada