| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
1851  | Naranjo Naranjo | Costa Rica, San José Dota > Santa María | populated place | N 9° 35′ 50'' | W 83° 57′ 21'' |
| 1852 | Naranjito Naranjito | Costa Rica, Puntarenas Province Quepos > Naranjito | populated place | N 9° 28′ 15'' | W 84° 6′ 17'' |
| 1853 | Naranjal Naranjal | Costa Rica, Guanacaste Province Nicoya > Belén de Nosarita | populated place | N 9° 58′ 31'' | W 85° 32′ 42'' |
| 1854 | Naranjal Naranjal | Costa Rica, San José Acosta > Cangrejal | populated place | N 9° 44′ 49'' | W 84° 13′ 38'' |
| 1855 | Nápoles Napoles,Nápoles | Costa Rica, San José Tarrazú > San Lorenzo | populated place | N 9° 36′ 27'' | W 84° 3′ 57'' |
| 1856 | Nantalz | Costa Rica, Limón Province Talamanca > Telire | populated place | N 9° 31′ 0'' | W 83° 2′ 0'' |
| 1857 | Nancite Nancite | Costa Rica, Puntarenas Province Puntarenas > Chira | populated place | N 10° 6′ 21'' | W 85° 9′ 34'' |
| 1858 | Nambí Nambi,Nambí | Costa Rica, Guanacaste Province Nicoya > Nicoya | populated place | N 10° 12′ 25'' | W 85° 30′ 0'' |
| 1859 | Nacaome | Costa Rica, Guanacaste Province Nicoya > Mansión | populated place | N 10° 11′ 0'' | W 85° 21′ 0'' |
| 1860 | Murcia Murcia | Costa Rica, Cartago Province Turrialba > Turrialba | populated place | N 9° 51′ 53'' | W 83° 42′ 21'' |
| 1861 | Muñeco | Costa Rica, Puntarenas Province Garabito > Jacó | populated place | N 9° 33′ 0'' | W 84° 33′ 0'' |
| 1862 | Mosca Mosca | Costa Rica, Puntarenas Province Buenos Aires > Potrero Grande | populated place | N 9° 6′ 22'' | W 83° 8′ 4'' |
| 1863 | Morazán | Costa Rica, Alajuela Province Atenas > San Isidro | populated place | N 9° 59′ 58'' | W 84° 24′ 51'' |
| 1864 | Morales Morales | Costa Rica, Puntarenas Province Puntarenas > Chomes | populated place | N 10° 5′ 24'' | W 84° 57′ 6'' |
| 1865 | Morado Morado | Costa Rica, San José Mora > Tabarcia | populated place | N 9° 51′ 26'' | W 84° 14′ 43'' |
| 1866 | Monteverde | Costa Rica, Limón Province Siquirres > Pacuarito | populated place | N 10° 5′ 59'' | W 83° 26′ 59'' |
| 1867 | Montero Montero | Costa Rica, Puntarenas Province Puntarenas > Chira | populated place | N 10° 6′ 44'' | W 85° 10′ 47'' |
| 1868 | Montero Montero,Montoro | Costa Rica, Heredia Province Santo Domingo > San Miguel | section of populated place | N 9° 58′ 51'' | W 84° 3′ 13'' |
| 1869 | Monte Redondo Monte Redondo | Costa Rica, San José Aserrí > Vuelta de Jorco | populated place | N 9° 47′ 18'' | W 84° 7′ 26'' |
| 1870 | Montenegro Montenegro | Costa Rica, Guanacaste Province Bagaces > Bagaces | populated place | N 10° 28′ 29'' | W 85° 12′ 37'' |
| 1871 | Montelimar Montelimar | Costa Rica, San José Turrubares > Carara | populated place | N 9° 37′ 25'' | W 84° 30′ 41'' |
| 1872 | Monte Galán | Costa Rica, Guanacaste Province Carrillo > Palmira | populated place | N 10° 36′ 0'' | W 85° 36′ 0'' |
| 1873 | Monte Galán | Costa Rica, Guanacaste Province Nicoya > Mansión | populated place | N 10° 8′ 0'' | W 85° 23′ 0'' |
| 1874 | HDA Montecristo Hacienda Montecristo | Costa Rica, Guanacaste Province Tilarán > Santa Rosa | populated place | N 10° 32′ 57'' | W 84° 59′ 48'' |
| 1875 | Monte Alto Monte Alto | Costa Rica, Guanacaste Province Nicoya > Mansión | populated place | N 10° 4′ 12'' | W 85° 16′ 55'' |
| 1876 | Montano Montano | Costa Rica, Guanacaste Province Bagaces > Bagaces | populated place | N 10° 31′ 33'' | W 85° 11′ 20'' |
| 1877 | Montaña Grande Montana Grande,Montaña Grande | Costa Rica, Puntarenas Province Puntarenas > Lepanto | populated place | N 9° 54′ 29'' | W 85° 2′ 18'' |
| 1878 | Montaña Azul Montana Azul,Montaña Azul | Costa Rica, Heredia Province Heredia > Varablanca | populated place | N 10° 11′ 32'' | W 84° 9′ 14'' |
| 1879 | Montaña Montana,Montaña | Costa Rica, Alajuela Province Alajuela > San Isidro | populated place | N 10° 8′ 16'' | W 84° 10′ 52'' |
| 1880 | Mongito | Costa Rica, San José San José > San Sebastián | populated place | N 9° 55′ 10'' | W 84° 4′ 51'' |
| 1881 | Mona | Costa Rica, Puntarenas Province Golfito > Golfito | populated place | N 8° 35′ 57'' | W 83° 5′ 34'' |
| 1882 | Mollejones Mollejones | Costa Rica, San José Pérez Zeledón > Platanares | populated place | N 9° 13′ 46'' | W 83° 38′ 24'' |
| 1883 | Moín | Costa Rica, Limón Province Limón > Limón | populated place | N 9° 59′ 23'' | W 83° 5′ 35'' |
| 1884 | Mogos Mogos | Costa Rica, Puntarenas Province Osa > Sierpe | populated place | N 8° 44′ 48'' | W 83° 22′ 50'' |
| 1885 | Miravalles Miravalles | Costa Rica, San José Pérez Zeledón > San Isidro de El General | populated place | N 9° 25′ 11'' | W 83° 40′ 40'' |
| 1886 | Miramar Miramar | Costa Rica, Guanacaste Province Nicoya > Belén de Nosarita | populated place | N 9° 57′ 11'' | W 85° 29′ 54'' |
| 1887 | Mirador Mirador | Costa Rica, Alajuela Province San Carlos > Monterrey | populated place | N 10° 31′ 10'' | W 84° 35′ 53'' |
| 1888 | Millal Millal | Costa Rica, Guanacaste Province Nandayure > Bejuco | populated place | N 9° 50′ 26'' | W 85° 15′ 26'' |
| 1889 | Milla Cinco Milla Cinco | Costa Rica, Limón Province Siquirres > El Cairo | populated place | N 10° 10′ 41'' | W 83° 29′ 36'' |
| 1890 | Barrio México Barrio Mexico,Mexico,México | Costa Rica, San José San José > Merced | section of populated place | N 9° 57′ 0'' | W 84° 5′ 0'' |
| 1891 | México Mexico,México | Costa Rica, Limón Province Limón > Río Blanco | populated place | N 9° 58′ 54'' | W 83° 8′ 31'' |
| 1892 | Mesetas Arriba Mesetas Arriba | Costa Rica, Puntarenas Province Esparza > San Jerónimo | populated place | N 10° 2′ 31'' | W 84° 39′ 27'' |
| 1893 | Meseta Meseta | Costa Rica, San José Aserrí > Vuelta de Jorco | populated place | N 9° 46′ 37'' | W 84° 9′ 13'' |
| 1894 | Mesas Mesas | Costa Rica, Puntarenas Province Parrita > Parrita | populated place | N 9° 36′ 20'' | W 84° 22′ 2'' |
| 1895 | Mesas Mesas | Costa Rica, San José Pérez Zeledón > Pejibaye | populated place | N 9° 11′ 51'' | W 83° 35′ 34'' |
| 1896 | Mesa Mesa | Costa Rica, San José Acosta > Cangrejal | populated place | N 9° 46′ 30'' | W 84° 10′ 18'' |
| 1897 | Mercedes Sur Mercedes Sur | Costa Rica, San José Puriscal > Mercedes Sur | populated place | N 9° 49′ 24'' | W 84° 21′ 11'' |
| 1898 | Mercedes Norte | Costa Rica, San José Puriscal > Mercedes Sur | populated place | N 9° 50′ 10'' | W 84° 19′ 34'' |
| 1899 | Mercedes Mercedes | Costa Rica, Alajuela Province San Carlos > Quesada | populated place | N 10° 18′ 35'' | W 84° 25′ 32'' |
| 1900 | Mercedes Mercedes | Costa Rica, Guanacaste Province Hojancha > Monte Romo | populated place | N 9° 59′ 12'' | W 85° 22′ 7'' |
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