Northern Mariana Islands Population, Main Cities and Geography

By | January 27, 2023

Northern Mariana Islands Population and cities


According to Countryaah website, the Northern Mariana Islands have about 70,000 residents.

Ethnic groups

Around 34% of the population are Filipinos, Chamorro are around 30%, Chinese around 12%, Micronesians around 8% and Carolinians around 5%.


The population is predominantly Catholic with around 60%, 19% are Protestants. There are also Baptists, Methodists, Mormons, Korean Prebysterians, Evangelicans and the 7th day Adventists.

In the Northern Mariana Islands, English and Chromatic and Carolinian are spoken.

Capital, other cities

The capital of the Northern Mariana Islands is the island of Saipan with about 50,000 residents.

Other cities are San Antonio on the island of Saipan with 4,750 residents and Garapan, also located on the island of Saipan, with 3,600 residents.

Northern Marians: geography and map

The island chain of the Northern Mariana Islands is located in the western Pacific. The state has a size of 477 km². The world’s deepest point in the sea, the Mariana Trench, runs parallel to the east of the island chain over a length of approx. 2,940 km. Check topmbadirectory for politics, flags, famous people, animals and plants of Northern Mariana Islands. The islands of Saipan and Tinian sit on a ridge, the foot of which is in the Mariana Trench at a depth of approx. 11,000 m. The state consists of 14 islands, ETC:

  • the main island of Saipan, on which around 90% of the population of the entire state live. The island covers an area of 121 km² and is approximately 22 km long and 8 km wide.
  • the island of Tinian, with an area of 101 km². The island is approximately 19 km long and 8 km wide.
  • the island of Rota, with an area of 83 km². The island is about 16 km long and 5 km wide.
  • the island of Pagan, with an area of 49 km².
  • Another island is Farallon de Medinilla, which is a military training area.
  • There are active volcanoes on the islands of Pagan and Anatahan.

The island chain of the Northern Mariana Islands has a coast to the Pacific with a length of around 1,480 km.

Tidal range

In the Northern Mariana Islands, the mean tidal range is around 1 to 2 m.


The world’s highest tidal range can be found in the Bay of Fundy in Canada, where it is up to 16 meters, and at spring tide even over 20 meters. The Bay of Fundy is located on the Atlantic between the Canadian provinces of New Brunswick and Nova Scotia, which is called Nova Scotia in German and whose capital is Halifax.

On the German North Sea coast it varies between one and three meters. In the western Baltic Sea, on the other hand, the tidal range is only 0.3 meters, while it is barely noticeable in the eastern Baltic Sea.

Longitude and latitude

The Northern Mariana Islands extend over the following geographical latitude (abbreviation Δφ) and geographical longitude (abbreviation Δλ):

Δφ = from around 13 ° to around 20 ° north latitude Δλ = at around 14 ° east longitude

You can find detailed information on this subject under: Geographical longitude and latitude.

Legal time

For the Northern Mariana Islands, the following value applies to Central European Time (CET), i.e. the time without summer time. A minus sign means that it is earlier there, a plus sign that it is later than CET:

Δt (CET) = + 9 h

More detailed explanations of the time can be found under: Time zones, time.

High sun

For the sake of simplicity, we assume a north latitude of 15 ° to calculate the midday high sun on the islands.

If the sun or its image point is exactly at a latitude of 15 °, the sun will be exactly perpendicular to the sky at noon. This happens exactly twice a year, roughly 58 days after March 21st and 58 before September 21st.

Mountains or elevations

The highest mountain in the country is an unnamed location on the island of Agrihan, with a height of 965 m.

Other high mountains are:

  • Mt. Tapotchau on Saipan, with a height of 474 m.
  • Mt Sabana is the highest mountain on Rota, with a height of 480 m.
  • Mt. Lasso on Tinian, with a height of 163 m.
  • Mt. Taipingot on Rota, with a height of 141 m.
  • Kastyu Hill is the highest mountain on Tinian, with a height of around 185 m.


Okgok Stream

The longest river in the country is the Okgok Stream on Rota.

There are four other smaller rivers on Rota.

There are no rivers on the other islands.


There are no lakes in the Northern Mariana Islands.

The Pacific

The northern Marianas border the Pacific Ocean with a total coastline of 1,480 km – more precisely, the northern Marianas are located in the South Pacific, the so-called South Seas. This region of the Pacific Ocean includes the Polynesian Islands as well as parts of Melanesia and Micronesia.

Northern Mariana Islands Population