# Dema, Bonthe District – Sections, Population & Map

> Source: https://wherepedia.org/sierra-leone/southern/bonthe/dema/

Chiefdom · Bonthe District 

# Dema

Dema is a chiefdom of Sierra Leone in Bonthe District, Southern Province. It had an estimated **8,263 people** in 2020 on 87 km² (about 95 per km²). It is divided into 4 sections. 58 named villages and localities are recorded here.

- 8,263people (2020)
- 86.5km²
- 4sections

## How many people live in Dema?

Dema had an estimated **8,263 people** in 2020 — 3.7% of Bonthe District, 156th of 161 chiefdoms. There are 1,024 women for every 1,000 men (above the Bonthe District figure of 973). Spread over 87 km², that is about **95 people per km²**, 71st of 161 chiefdoms.

40.8% of people are children under 15 and 3.5% are 65 or older; the median age is about 19 years (it is 19 across Bonthe District). For every 100 people of working age (15–64) there are 80 children and older people.

0–4 ****1,094**

5–9 ****1,292**

10–14 ****988**

15–19 ****1,018**

20–24 ****772**

25–29 ****708**

30–34 ****505**

35–39 ****491**

40–44 ****349**

45–49 ****283**

50–54 ****217**

55–59 ****129**

60–64 ****132**

65–69 ****86**

70–74 ****76**

75–79 ****47**

80+ ****78**

Source: [Statistics Sierra Leone (SSL) _ Population and Housing Census / UNFPA via OCHA HDX, population 2020 (COD-PS, CC BY-IGO)](https://data.humdata.org/dataset/cod-ps-sle).

## Where is Dema?

Dema lies in [Bonthe District](https://wherepedia.org/sierra-leone/southern/bonthe/), [Southern Province](https://wherepedia.org/sierra-leone/southern/), [Sierra Leone](https://wherepedia.org/sierra-leone/). It borders 1 other chiefdom: [Sittia](https://wherepedia.org/sierra-leone/southern/bonthe/sittia/). By area it is the 149th largest of 167 chiefdoms in Sierra Leone. It covers 2.4% of [Bonthe District](https://wherepedia.org/sierra-leone/southern/bonthe/). The centre of Dema is about 108 km in a straight line from Freetown, the capital. The centre point is at 7.5887° N, 12.8627° W.

Source: [Government of Sierra Leone via OCHA HDX, administrative boundaries (COD-AB, CC BY-IGO)](https://data.humdata.org/dataset/cod-ab-sle).

## Things to see in and around Dema

OpenStreetMap lists 1 named sights in Dema: 1 beach.

- Turtle Islands Expeditions · beach

Source: [© OpenStreetMap contributors (ODbL), Geofabrik extract — named settlements](https://www.openstreetmap.org/copyright).

Named attractions, museums, viewpoints, historic sites and natural features mapped in OpenStreetMap. Places of worship are not listed.

## Know before you go: Dema

- Time zoneUTC+0, no daylight saving · Africa/Freetown
- CurrencyLeone (SLE)
- Country calling code+232
- LanguagesEnglish, Mende, Timne
- Plug typesType G · 230 V
- Driving sideRight

### Nearest airports

- Lungi International Airport (FNA) · Freetown (Lungi-Town)120 km
- Ahmed Sékou Touré International Airport (CKY) · Conakry236 km

### Daylight

Days are longest in Jun (about 12.6 hours, sunrise around 06:34) and shortest in Dec (about 11.7 hours, sunrise around 06:55, sunset around 18:37).

Source: [GeoNames country and time-zone files (CC BY 4.0)](https://www.geonames.org/); [Wikidata (CC0) — plug types, mains voltage, driving side; retrieved 2026-11-02](https://www.wikidata.org/); [OurAirports (public domain)](https://ourairports.com/data/).

Airports with scheduled passenger flights; straight-line distances. Daylight is calculated for the 15th of each month in local standard time. Check entry and visa rules with official government sources before travelling.

## Sections of Dema

Section Area km² Localities Services 

[Chepo](https://wherepedia.org/sierra-leone/southern/bonthe/dema/chepo/) 10 7 0 

[Dema](https://wherepedia.org/sierra-leone/southern/bonthe/dema/dema/) 20 25 0 

[Turtle Islands](https://wherepedia.org/sierra-leone/southern/bonthe/dema/turtle-islands/) 16 10 0 

[Yoh](https://wherepedia.org/sierra-leone/southern/bonthe/dema/yoh/) 41 20 0 

Source: [Government of Sierra Leone via OCHA HDX, administrative boundaries (COD-AB, CC BY-IGO)](https://data.humdata.org/dataset/cod-ab-sle); [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/); [Overture Maps places (CDLA-Permissive-2.0) and © OpenStreetMap contributors (ODbL)](https://overturemaps.org/).

## Villages and localities in Dema

Open gazetteers list **58 villages, towns and localities** in Dema. Settlements here lie between about 1 m and 17 m above sea level (median 11 m).

- Bachalo
- Bahama
- Baki
- Bandasuma
- Baoma
- Blama
- Bolotoke
- Bonde
- Bondo
- Bonjema
- Bumpetok
- Changi
- Checheme
- Dablama
- Dema
- Failo
- Faivilin
- Gbain
- Gbamati
- Gbandako
- Gbonko Talia
- Gewojahun
- Giehun
- Gondama
- Jamatin
- Kambia
- Kebanwana
- Kebeil
- Kigbal
- Konolo
- Levuma
- Mania
- Mano
- Matakan
- Momaia
- Mono
- Mut
- Nalo
- Nyeke
- Petewoma
- Sabale
- Sei
- Senehun
- Tabe
- Talail
- Talayin
- Tangabu
- Thunman
- Tisana
- Tivellin
- Tiwalan
- Tombay
- Tombe
- Tongolo
- Tulman
- Wumbe
- Yele
- Yo

Source: [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/); [© OpenStreetMap contributors (ODbL), Geofabrik extract — named settlements](https://www.openstreetmap.org/copyright).

## Landscape and landmarks of Dema

Named natural and historic features inside Dema, from the GeoNames gazetteer.

### Water

1 river or stream.

- Gbandako

### Coast and islands

7 islands.

- Baki
- Hoong
- Mut
- Sei
- Sental
- Yele
- Yelikai

### Getting around

1 harbour.

- Owen Tudors Harbor

Source: [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/).

Places of worship are not listed. Elevations are from the GeoNames terrain model and are approximate.

## Weather in Dema and the best time to visit

Using the climate of Bonthe District, the warmest month is Apr (average 28 °C) and the coolest is Aug (25 °C). About 2,107 mm of rain falls in a year; the wettest month is Aug (477 mm) and the driest Jan (6 mm). The most comfortable months for a visit are **November to March**.

- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec

Month Average °C Rain mm 

Jan 26 6 

Feb 27 13 

Mar 28 28 

Apr 28 53 

May 27 121 

Jun 26 302 

Jul 25 447 

Aug 25 477 

Sep 25 352 

Oct 26 208 

Nov 26 78 

Dec 26 23 

Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/).

## Quick answers

- Where is Dema?In Bonthe District, Southern Province, Sierra Leone
- What is the population of Dema?8,263 (2020 estimate)
- What is the median age in Dema?About 19 years (2020 estimate)
- What is the population density of Dema?About 95 people per km²
- What borders Dema?Sittia
- What is there to see in Dema?Turtle Islands Expeditions
- What time zone is Dema in?UTC+0
- What currency is used in Dema?Leone (SLE)
- What language is spoken in Dema?English, Mende, Timne (main languages nationally)
- How many villages are in Dema?58 named settlements (GeoNames, OpenStreetMap)
- What is the elevation of Dema?Settlements lie between 1 m and 17 m
- What is the best time to visit Dema?November to March
- What is the P-code of Dema?SL030203 (OCHA common operational dataset)