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Index

The Communities of Indiana (IN)

Select by first two letters of name

OA	OB	OC	OD	OG	OH
OI	OL	OM	ON	OO	OP
OR	OS	OT	OU	OV	OW
OX

Notes about this Index:

#	Indicates a community that is historic and no longer exists. While a few buildings, houses or some ruins might still exists, most historic communities are gone with no trace.
?	Indicates what we call an Orphan. An Orphan is the situation where we have a name with very little information or we're uncertain whether the name is a community, a post office or might be railroad related such as a siding or station.
+	While a post office name generally indicates the community in which it is located, other PO names don't. In this case, we have a PO name but not the community in which its located.

Oak
See: Thornhope

Oak Forest [Franklin Co]X

Oak Grove [Montgomery Co]Xo

Oak Grove [Posey Co]X

Oak Grove [Starke Co]X

Oak Grove [Vigo Co]Xo

Oak Hill [Gibson Co]X

Oak Hills [Bartholomew Co]Xo

Oak Lodge [LaGrange Co]X

Oak Park [Clark Co]X

Oak Plain [Hendricks Co]Xo

Oak Ridge [Greene Co]Xo

Oak Ridge [Martin Co]Xo

Oak Station [Knox Co]Xo

Oak Tree Crossroads [Franklin Co]X

Oakalla [Putnam Co]Xo

Oakcrest [Bartholomew Co]Xo

Oakdale [Jennings Co]X

Oakdale [Miami Co]X

Oakdam [Vanderburgh Co]Xo

Oakford [Howard Co]X

Oakland [Marion Co]Xo

Oakland [Spencer Co]Xo

Oakland City [Gibson Co]X

Oakland City Junction [Pike Co]X

Oaklandon [Marion Co]X

Oaklawn Terrace [Clark Co]Xo

Oakley [Hendricks Co]Xo

Oakley [Miami Co]X

Oaktown [Knox Co]X

Oakville [Delaware Co]X

Oakwood [LaPorte Co]X

Oakwood [Steuben Co]X

Oakwood Commons [Grant Co]Xo

Oakwood Park [Kosciusko Co]X

Oakwood Shores [Steuben Co]Xo

Oard Springs [Scott Co]Xo

Oatsville [Pike Co]X

Ober [Starke Co]X

Obi [Orange Co]Xo

Occident [Rush Co]X

Ockley [Carroll Co]X

Octagon [Tippecanoe Co]X

Odd [Parke Co]Xo

Odell [Tippecanoe Co]X

Odessa [Benton Co]Xo

Odon [Davies's Co]X

Ogden [Henry Co]X

Ogden Dunes [Porter Co]X

Ogilville [Bartholomew Co]X

Ohio Falls [Clark Co]Xo

Ohio Valley [Clark Co]Xo

Oil Creek [Perry Co]Xo

Old Adamsboro [Cass Co]X

Old Bargersville [Johnson Co]X

Old Bath [Franklin Co]X

Old Halfway [Tippecanoe Co]X

Old Hill [Clay Co]X

Old Milan [Ripley Co]X

Old Otto [Clark Co]Xo

Old Pekin [Washington Co]X

Old Saint Louis [Bartholomew Co]X

Old Tip Town [Marshall Co]X

Old Town [Jackson Co]Xo

Old Town [Warren Co]X

Old Watson [Clark Co]Xo

Oldenburg [Franklin Co]X

Oldtown [Dearborn Co]X

Olean [Ripley Co]X

Olin [Warren Co]X

Olinda [Howard Co]Xo

Olinville [Marion Co]Xo

Olio [Hamilton Co]X

Oliphant [Pike Co]Xo

Olive [Saint Joseph Co]X

Olive Hill [Wayne Co]Xo

Oliver [Posey Co]X

Olivers [Saint Joseph Co]Xo

Oliveton [Morgan Co]Xo

Omega [Hamilton Co]X

Oneida [Kosciusko Co]Xo

Onondaga [Marshall Co]Xo

Ontario [LaGrange Co]X

Onward [Cass Co]X

Oolitic [Lawrence Co]X

Opal [Randolph Co]Xo

Opedee [Vermillion Co]Xo

Ora [Starke Co]X

Oran [Kosciusko Co]Xo

Orange [Fayette Co]X

Orangeville [DeKalb Co]X

Orangeville [Orange Co]X

Orchard Grove [Lake Co]X

Orchard Heights [Saint Joseph Co]Xo

Orchard Heights Addition [Saint Joseph Co]X

Orchard Highlands [LaPorte Co]X

Orchard Lawn [Delaware Co]Xo

Orchard Park [Hamilton Co]X

Oregon [Clark Co]Xo

Oregon Heights [Lake Co]Xo

Orestes [Madison Co]X

Organ Springs [Washington Co]X

Oriole [Perry Co]X

Orion [Kosciusko Co]Xo

Orland [Steuben Co]X

Orleans [Orange Co]X

Ormas [Whitley Co]X

Orrville [Knox Co]X

Orth [Montgomery Co]Xo

Osborn [Lake Co]X

Osborn Landing [Kosciusko Co]X

Osceola [Saint Joseph Co]X

Osgood [Ripley Co]X

Ossian [Wells Co]X

Oswego [Kosciusko Co]X

Otess [Grant Co]Xo

Otis [LaPorte Co]X

Otisco [Clark Co]X

Otsego Center [Steuben Co]X

Otter Creek [Vigo Co]Xo

Otter Creek Junction [Vigo Co]X

Otter Lake [Steuben Co]Xo

Otter Village [Ripley Co]X

Otterbein [Benton Co]X

Otto [Clark Co]X

Otwell [Pike Co]X

Oufa [Steuben Co]Xo

Outlet [Lake Co]Xo

Overholzer [Clay Co]Xo

Ovid [Madison Co]Xo

Owasco [Carroll Co]X

Owen [Clark Co]X

Owen [Wabash Co]Xo

Owensburg [Greene Co]X

Owensville [Gibson Co]X

Owl Prairie [Davies's Co]Xo

Oxford [Benton Co]X

Oxford Park [Hamilton Co]X

Oxonia [Washington Co]Xo

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This page was last modified/updated: 17 Apr 2025