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The Communities of Wisconsin (WI)

Select by first two letters of name

OA	OC	OD	OE	OG	OI
OJ	OK	OL	OM	ON	OO
OP	OR	OS	OT	OU	OW
OX	OZ

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 [Price Co]Xo

Oak Center [Fond du Lac Co]X

Oak Creek [Milwaukee Co]Xo

Oak Creek [Milwaukee Co]X

Oak Grove [Dodge Co]X

Oak Grove [Eau Claire Co]Xh

Oak Hall [Dane Co]X

Oak Hill [Jefferson Co]X

Oak Knoll [Dane Co]X

Oak Knoll [Waukesha Co]X

Oak Orchard [Oconto Co]X

Oak Park Terrace [Dane Co]X

Oakdale [Monroe Co]X

Oakdale Estates [Racine Co]X

Oakfield [Fond du Lac Co]X

Oakland [Burnett Co]X

Oakland [Jefferson Co]X

Oakland Heights [Dane Co]X

Oakley [Green Co]X

Oakridge [Kenosha Co]Xo

Oakridge [Pierce Co]X

Oaks [Sauk Co]Xo

Oakwood [Milwaukee Co]X

Oakwood [Winnebago Co]X

Oceola [Fond du Lac Co]Xo

Oconomowoc [Waukesha Co]X

Oconomowoc Lake [Waukesha Co]X

Oconomowoc Lake South [Waukesha Co]Xo

Oconto [Oconto Co]X

Oconto Falls [Oconto Co]X

Odanah [Ashland Co]X

Odin [Vernon Co]Xo

Oenca [Jefferson Co]Xo

Ogdensburg [Waupaca Co]X

Ogema [Price Co]X

Oil City [Monroe Co]X

Ojibwa [Sawyer Co]X

Okauchee [Waukesha Co]X

Okauchee Lake [Waukesha Co]X

Okee [Columbia Co]X

Old Albertville [Chippewa Co]X

Old Anson [Chippewa Co]Xo

Old Ashippun [Dodge Co]X

Old Deerfield [Dane Co]X

Old Fort [Ashland Co]X

Old Lebanon [Dodge Co]X

Old Meridean Ferry [Dunn Co]X

Old Tyrone [Dunn Co]Xh

Olin [Adams Co]Xo

Olio [Sheboygan Co]Xo

Olive [Chippewa Co]Xo

Oliver [Douglas Co]X

Olivet [Pierce Co]X

Omro [Winnebago Co]X

Onalaska [La Crosse Co]X

Oneida [Brown Co]X

Onion River [Sheboygan Co]Xo

Ono [Pierce Co]X

Ontario [Vernon Co]X

Oostburg [Sheboygan Co]X

Opal [Marathon Co]Xo

Ora Oak [Grant Co]Xo

Orange [Burnett Co]Xo

Orange [Juneau Co]Xo

Orange Mill [Juneau Co]X

Orchard Grove [Washington Co]X

Ordino [Marquette Co]Xo

Oregon [Dane Co]X

Orfordville [Rock Co]X

Orihula [Winnebago Co]X

Orion [Richland Co]X

Ormes [Saint Croix Co]Xo

Ormsby [Langlade Co]X

Ornage [Juneau Co]Xo

Orva [Iron Co]X

Osborn [Rock Co]Xo

Osceola [Polk Co]X

Osceola Mills [Polk Co]Xo

Oshaukuta [Columbia Co]Xo

Oshkosh [Winnebago Co]X

Oslo [Manitowoc Co]Xo

Osman [Manitowoc Co]X

Osseo [Trempealeau Co]X

Ostego [Columbia Co]Xo

Ostrander [Waupaca Co]X

Otis [Lincoln Co]X

Otsego [Columbia Co]X

Ottawa [Waukesha Co]X

Otter Creek [Eau Claire Co]Xo

Otter Vale [Vernon Co]Xo

Otterville [Sauk Co]Xo

Ottman Corners [Pierce Co]X

Ottville [Marathon Co]Xo

Oulu [Bayfield Co]X

Ourtown [Sheboygan Co]X

Owascus [Fond du Lac Co]Xo

Owen [Clark Co]X

Ox Bow [Jackson Co]Xo

Oxbo [Sawyer Co]X

Oxford [Marquette Co]X

Ozaukee [Ozaukee Co]Xo

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This page was last modified/updated: 16 Jan 2025