| Name | Population | Altitude | Latitude | Longitude | 
| Obongdong : | 
 | 
 | 39°45'0.0" N | 127°13'58.8" E | 
| Obonggol : | 
 | 
 | 39°45'0.0" N | 127°13'58.8" E | 
| Obongkol : | 
 | 
 | 39°45'0.0" N | 127°13'58.8" E | 
| Obong : | 
 | 25 m | 40°12'16.9" N | 128°21'7.2" E | 
| Ochon : | 
 | 
 | 39°34'32.2" N | 127°2'38.4" E | 
| Odaepyong : | 
 | 
 | 40°17'56.0" N | 128°7'44.4" E | 
| Oechon : | 
 | 
 | 40°32'43.1" N | 128°58'22.8" E | 
| Oedokpyong : | 
 | 
 | 39°13'17.0" N | 127°1'22.8" E | 
| Oegumi : | 
 | 
 | 40°8'6.0" N | 128°28'30.0" E | 
| Oemulli : | 
 | 
 | 40°28'27.1" N | 128°55'30.0" E | 
| Oeryongmiri : | 
 | 
 | 39°22'4.1" N | 127°32'42.0" E | 
| Oesandu : | 
 | 663 m | 40°39'25.9" N | 128°46'33.6" E | 
| Oesong : | 
 | 145 m | 39°40'43.0" N | 127°7'37.2" E | 
| Ogari : | 
 | 
 | 39°32'34.1" N | 127°31'33.6" E | 
| Oguchon : | 
 | 
 | 40°22'46.9" N | 128°43'22.8" E | 
| Ogudong : | 
 | 
 | 39°44'57.1" N | 126°49'40.8" E | 
| Ogumni : | 
 | 
 | 39°27'18.0" N | 127°21'7.2" E | 
| Ogu : | 
 | 90 m | 40°18'49.0" N | 128°16'12.0" E | 
| Ogyondong : | 
 | 
 | 40°45'20.9" N | 128°40'12.0" E | 
| Oho : | 
 | 
 | 39°28'32.9" N | 126°53'45.6" E | 
| Ohwadong : | 
 | 
 | 41°2'10.0" N | 128°44'24.0" E | 
| Oibang : | 
 | 462 m | 40°18'38.9" N | 128°20'56.4" E | 
| Oilli : | 
 | 
 | 40°10'59.9" N | 128°35'60.0" E | 
| Oindong : | 
 | 
 | 40°29'12.1" N | 128°18'50.4" E | 
| Ojangchon : | 
 | 
 | 40°24'24.1" N | 128°51'25.2" E | 
| Okhodogi : | 
 | 1 082 m | 40°50'34.1" N | 127°28'4.8" E | 
| Okhodok : | 
 | 1 082 m | 40°50'34.1" N | 127°28'4.8" E | 
| Okhwachon : | 
 | 
 | 40°19'59.9" N | 128°1'1.2" E | 
| Okkandong : | 
 | 
 | 40°31'59.9" N | 127°31'1.2" E | 
| Okpodong : | 
 | 
 | 39°26'48.1" N | 127°11'38.4" E | 
| Okpo : | 
 | 
 | 40°21'43.9" N | 128°43'12.0" E | 
| Oktae : | 
 | 
 | 40°17'43.1" N | 128°3'7.2" E | 
| Oktongni : | 
 | 
 | 39°58'0.1" N | 127°43'58.8" E | 
| Olchongni : | 
 | 
 | 40°53'48.8" N | 128°50'49.2" E | 
| Omaeri : | 
 | 
 | 40°7'23.9" N | 128°19'26.4" E | 
| Ombangdong : | 
 | 
 | 40°29'49.9" N | 129°3'14.4" E | 
| Omchon : | 
 | 
 | 39°31'23.2" N | 127°14'20.4" E | 
| Omdongni : | 
 | 
 | 40°19'5.2" N | 128°6'43.2" E | 
| Omjonggol : | 
 | 
 | 39°37'17.0" N | 127°14'2.4" E | 
| Omongni : | 
 | 7 m | 40°25'36.8" N | 128°52'48.0" E | 
| Omsori : | 
 | 
 | 40°18'19.1" N | 128°7'19.2" E | 
| Omulli : | 
 | 
 | 40°31'0.1" N | 127°16'1.2" E | 
| Ondogarae : | 
 | 39 m | 39°42'22.0" N | 127°14'31.2" E | 
| Onggidong : | 
 | 
 | 39°53'60.0" N | 127°43'1.2" E | 
| Onggijom : | 
 | 35 m | 39°42'23.0" N | 127°25'8.4" E | 
| Ongnyondong : | 
 | 
 | 40°45'20.9" N | 128°40'12.0" E | 
| Onjongni : | 
 | 
 | 39°31'27.8" N | 127°21'46.8" E | 
| Oongol : | 
 | 
 | 40°34'58.1" N | 129°1'22.8" E | 
| Opori : | 
 | 
 | 39°25'48.0" N | 127°23'38.4" E | 
| Opyongni : | 
 | 
 | 40°9'23.0" N | 128°13'48.0" E | 
| Opyong : | 
 | 
 | 40°10'59.9" N | 128°10'1.2" E | 
| Origol : | 
 | 
 | 39°29'39.1" N | 127°29'38.4" E | 
| Oripol : | 
 | 186 m | 39°53'1.0" N | 127°14'49.2" E | 
| Oripo : | 
 | 
 | 39°25'36.1" N | 127°23'34.8" E | 
| Oripyongni : | 
 | 
 | 39°52'0.1" N | 127°25'1.2" E | 
| Oripyong : | 
 | 
 | 40°20'53.9" N | 128°15'43.2" E | 
| Oro : | 
 | 140 m | 40°1'5.9" N | 127°27'18.0" E | 
| Orori : | 
 | 
 | 40°1'5.9" N | 127°27'18.0" E | 
| Oroup : | 
 | 
 | 40°1'5.9" N | 127°27'18.0" E | 
| Orungol : | 
 | 
 | 39°35'38.0" N | 127°13'22.8" E | 
| Orung : | 
 | 448 m | 39°13'59.9" N | 126°58'58.8" E | 
| Oryongmiri : | 
 | 
 | 39°22'4.1" N | 127°32'42.0" E | 
| Oryong : | 
 | 448 m | 39°13'59.9" N | 126°58'58.8" E | 
| Oryudong : | 
 | 
 | 39°41'49.9" N | 127°19'51.6" E | 
| Osampo : | 
 | 
 | 40°52'12.0" N | 128°55'51.6" E | 
| Osangni : | 
 | 
 | 39°42'55.1" N | 127°21'46.8" E | 
| Oulli : | 
 | 
 | 40°21'18.0" N | 128°16'8.4" E | 
| Oundong : | 
 | 
 | 40°2'38.0" N | 128°18'3.6" E | 
| Oungol : | 
 | 
 | 39°34'59.2" N | 127°9'43.2" E | 
| Ounni : | 
 | 
 | 40°7'59.9" N | 127°52'1.2" E | 
| Oyomchon : | 
 | 
 | 39°52'0.1" N | 127°43'1.2" E | 
| Oyommal : | 
 | 29 m | 39°52'0.1" N | 127°43'1.2" E | 
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