The table currently lists 291 places whose name starts with O.., distributed across 20 States.

Location ZIP Code Province
Oaka – Milne Bay
Ob – Western
Obabie – Southern Highlands
Obaha – Central
Obakigolo – Central
Obamuma – Southern Highlands
Obaoba – Central
Obeia – Oro
Obeimi – Western
Obo – Western
Obo Mission – Central
Oboro – Gulf
Obu – Central
Obuka – Southern Highlands
Obula – Southern Highlands
Obulaku – Milne Bay
Obulu – Madang
Obura – Eastern Highlands
Odale – Chimbu
Odi-Abu – Central
Oega – Jiwaka
Ofoyufa – Eastern Highlands
Ofumpina – Eastern Highlands
Ogai – Southern Highlands
Ogamuna – Eastern Highlands
Ogduruk – Sandaun
Ogelbeng – Western Highlands
Ogendie 2 – Chimbu
Ogeramnang – Morobe
Ogigiku – Milne Bay
Ogomanai – East Sepik
Ogomobu – Gulf
Ogondiye – Chimbu
Ogotana – Central
Ogowanda – Enga
Ogru – Sandaun
Ogru One – Sandaun
Ogru Two – Sandaun
Ogu – Eastern Highlands
Ogun – Western
Ogupone – Eastern Highlands
Ogurataba – Eastern Highlands
Ohu – Madang
Ohuru – Madang
Oiafaiyufa – Eastern Highlands
Oianenehona – Milne Bay
Oiapu – Gulf
Oiarip – Southern Highlands
Oibada – Central
Oibo – Oro
Oidobu – Central
Oiere – Oro
Oikiwa – Western
Oimeri – Chimbu
Oinama – Chimbu
Oiomamania – Milne Bay
Oisa – Oro
Oitatandi – Oro
Oiwa – Morobe
Oiyana Number One – Eastern Highlands
Oiyana Number Two – Eastern Highlands
Okao – Western
Okapa – Eastern Highlands
Okaukana – Central
Okavai – Gulf
Okentenu – Eastern Highlands
Okidetau – Western
Okimpuna – East New Britain
Okomo – Bougainville
Oksapmin – Sandaun
Oktambip – Western
Oktidetau – Western
Okukwewelou – Milne Bay
Okur – West New Britain
Olaipun – East New Britain
Old Ainbai – Sandaun
Old Akimari – Sandaun
Old Bangalum – Morobe
Old Berebei – Central
Old Buna – Sandaun
Old Fongwinam – Sandaun
Old Fugumui – Sandaun
Old Goiniri – Sandaun
Old Griengas – Western
Old Iafar 3 – Sandaun
Old Ibagum – Sandaun
Old Imbrinis – Sandaun
Old Inaroo – East Sepik
Old Kamau’a – Gulf
Old Kiava – West New Britain
Old Kukodobi – Western
Old Maria – Central
Old Musu – Sandaun
Old Okavai – Central
Old Pisa – Western
Old Setavi – Western
Old Simog – Sandaun
Old Somaidemasuk – Western
Old Wawat 2 – East Sepik
Old Yunzain – Morobe
Olea – Central
Olialavigu – Eastern Highlands
Oligadu – Morobe
Oligukaufo – Eastern Highlands
Olimola – Enga
Olipai – Gulf
Olivi – Central
Olmalag – New Ireland
Ololo – East New Britain
Olsobip – Western
Oltokane – Chimbu
Oludabei – Chimbu
Olul – Sandaun
Oma-Kasoru – Eastern Highlands
Omafe – Central
Omagiowe – Gulf
Omai – Southern Highlands
Omalai – Morobe
Oman – Southern Highlands
Omanagoro – Central
Omaumere – Gulf
Omaura – Eastern Highlands
Ombal – Hela
Ombisusu – Oro
Ombo – Central
Omborda – Eastern Highlands
Ombos – East Sepik
Omdata – Chimbu
Omema – Eastern Highlands
Omili – Morobe
Omisuan – Morobe
Omkalai – Chimbu
Omkwisi – Madang
Omo – Central
Omo – Gulf
Omo – New Ireland
Omoi – West New Britain
Omol – Sandaun
Omombule – Sandaun
Omoritulavava – Central
Omoro – Milne Bay
Omowabi – Western
Omu – Central
Omula – Sandaun
Omungalu – Chimbu
Omuru – Madang
Onabasusu – Oro
Onambatutu – Oro
Onaningka – Eastern Highlands
Ondagipitari – Oro
Ondahari – Oro
Ondatera – Morobe
Ondauna – Eastern Highlands
Ondoro – Oro
One – Southern Highlands
One One – Central
Onei – Sandaun
Onemagoro – Central
Onete – Central
Onga – Morobe
Ongabip – Sandaun
Ongahambo – Oro
Ongai – Southern Highlands
Onggake – Morobe
Ongge – Eastern Highlands
Onggugoku – Chimbu
Ongo – Madang
Ongoho – Oro
Ongoma – Madang
Ongonma – Chimbu
Ongoru – Madang
Ongulma – Jiwaka
Onima – Chimbu
Onobuyufo – Eastern Highlands
Ononge – Central
Onoporavi – Gulf
Onovi – Bougainville
Ontabura – Eastern Highlands
Onteru – Eastern Highlands
Onuk – Morobe
Oomsis – Morobe
Opa – Gulf
Opai – Morobe
Opalla – New Ireland
Opanabu – Milne Bay
Opau – Gulf
Openete – Madang
Opi – Madang
Opiabus – Western Highlands
Opinga – Eastern Highlands
Opka – Western
Opoiyanti – Eastern Highlands
Opri – East Sepik
Opuraria – Gulf
Ora – East New Britain
Orabia – Southern Highlands
Orabu – East Sepik
Orae – Southern Highlands
Orai – Eastern Highlands
Orai’ia – Central
Orami – Bougainville
Oranatu – Eastern Highlands
Oraoro – Central
Orarako – Morobe
Orarasusu – Oro
Oraratu – Eastern Highlands
Oraratu Number 1 – Eastern Highlands
Oraratu Number 2 – Eastern Highlands
Oraratu-Mane – Eastern Highlands
Orasusu – Oro
Oraura – Eastern Highlands
Orava – Bougainville
Ordeno – Oro
Orege – Eastern Highlands
Oregei – Eastern Highlands
Orei – Enga
Oremai – East Sepik
Oreresan – Oro
Oreta – Jiwaka
Ori – Sandaun
Ori – Central
Oribiari – Oro
Orie – Eastern Highlands
Orikibia – Chimbu
Orimai – Bougainville
Orin – Southern Highlands
Orinma – Madang
Oriomo – Western
Oriopetana – Central
Oriorita – Eastern Highlands
Orivegu – Eastern Highlands
Orkwanda – Sandaun
Orloli – Gulf
Orlsop – Madang
Orndol – Southern Highlands
Oro – Madang
Oro – Central
Orobinati – Eastern Highlands
Oroi – Central
Orokana – Southern Highlands
Orokolo – Gulf
Oromosapua – Western
Orona – Eastern Highlands
Oronga – Madang
Oropai – Western
Oropoi – Western
Oropot – Morobe
Orotoaba – Oro
Orovoi – Gulf
Orsanamagunka – Eastern Highlands
Ort – Madang
Orutei – Sandaun
Osako – Oro
Osaroa – Eastern Highlands
Osasu – Western
Osena – Eastern Highlands
Osikwea – Milne Bay
Osol – Sandaun
Ossima – Sandaun
Ot – Western
Otaki – Madang
Otami – Gulf
Otara – Eastern Highlands
Otare – Southern Highlands
Otei – Sandaun
Otemgi – Sandaun
Otete – Morobe
Otibanda – Morobe
Otoma – Southern Highlands
Otomonorobe – Eastern Highlands
Otto – Sandaun
Ouba – Madang
Oubirap – Madang
Oudorla – Western
Ougini – Western Highlands
Oum Number 1 – East Sepik
Oum Number 2 – East Sepik
Oupan – Madang
Oure – Oro
Ovage – Southern Highlands
Ovahuhu – Gulf
Ovavaha – Gulf
Ovesa – Oro
Owanenga – Gulf
Owenia – Eastern Highlands
Oweniak – Sandaun
Owens Corner – Central
Owensnana – Western
Owobi – Western
Oworu – Madang
Oyamtobip – Western

The largest cities

The smallest localities

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