Provinces of Sierra Leone
Updates: 
Mario Pezza sent me some census data for Sierra Leone, along with the addresses of his sources. The one I found most
reliable and helpful was Statistics Sierra Leone
. I updated the
population column in the main table, and added a Population history section.
Country overview: 
| Short name | SIERRA LEONE |
| ISO code | SL |
| FIPS code | SL |
| Language | English (en) |
| Time zone | +0 |
| Capital | Freetown |
In 1900, Sierra Leone consisted of a British colony occupying two coastal areas, and a British protectorate in the
hinterland. Britain granted independence on 1961-04-27.
Other names of country: 
- Danish: Sierra Leone
- Dutch: Sierra Leone, Republiek Sierra Leone (formal)
- English: Republic of Sierra Leone (formal)
- Finnish: Sierra Leone
- French: Sierra Leone f
- German: Sierra Leone n
- Icelandic: Síerra Leóne
- Italian: Sierra Leone f
- Norwegian: Sierra Leone, Republikken Sierra Leone (formal)
- Portuguese: Serra Leoa, República f da Serra Leoa f (formal)
- Spanish: Sierra Leona, República f de Sierra Leona (formal)
- Swedish: Sierra Leone
Origin of name: 
Hispanicized from Portuguese Serra Leão: lion mountain
Primary subdivisions: 
Sierra Leone is divided into three provinces and one "area".
| Province | HASC | ISO | FIPS | Population | Area(km.²) | Area(mi.²) | Capital |
| Eastern | SL.EA | E | SL01 | 1,187,532 | 15,553 | 6,005 | Kenema |
| Northern | SL.NO | N | SL02 | 1,718,240 | 35,936 | 13,875 | Makeni |
| Southern | SL.SO | S | SL03 | 1,106,602 | 19,694 | 7,604 | Bo |
| Western | SL.WE | W | SL04 | 950,924 | 557 | 215 | Freetown |
| 4 divisions | 4,963,298 | 71,740 | 27,699 | |
|
Further subdivisions:
See the Districts of Sierra Leone page.
The provinces are subdivided into districts. The districts are further subdivided into chiefdoms.
Territorial extent: 
- Southern includes Sherbro Island and the Turtle Islands.
- Western includes the Sierra Leone peninsula, Tasso Island in the Rokel River estuary, and the Banana Islands.
Change history: 
- 1900: Sierra Leone colony consisted of Sherbro Island and adjacent islets, and a disjoint area on the Sierra
Leone peninsula around Freetown. Sierra Leone protectorate was divided into the districts of Bandajuma (capital
Bandajuma), Karene (Karene), Koinadugu (Falaba), Panguma (Panguma), and Ronietta (Kwelu).
- ~1901: Capital of Karene moved to Batkanu; capital of Koinadugu moved to Kabala; capital of Ronietta moved to
Moyamba.
- 1904: Îles de Los transferred from Sierra Leone to French Guinea by cession.
- 1907: Districts reorganized. Bandajuma and Panguma districts were replaced by Central, North Sherbro, and
Railway. Other borders realigned.
- 1909: Central district split between Railway and Ronietta. Headquarters district formed from coastal sections of
Karene and Ronietta.
- 1912: The Karene section of Headquarters was restored to Karene.
- 1920: Sierra Leone reorganized into three provinces: Northern (capital Makump), Central (Kenema), and Southern
(Pujehun). The Freetown section of the colony remained separate, but the Sherbro Island part merged with Southern.
- 1931: Central province merged with Southern; capital of Northern moved from Makump to Makeni; capital of Southern
moved to Bo.
- 1932: Freetown became capital of Northern province.
- 1939: Capital of Northern returned to Makeni.
- 1945: Eastern province (capital Kenema) split from Southern.
- 1961-04-27: Sierra Leone became independent. Colony of Sierra Leone became Western area.
Population history:
| Province | 1963-04-01 | 1974-12-08 | 1985-12-15 | 2004-12 |
| Eastern | 545,579 | 775,931 | 960,551 | 1,187,532 |
| Northern | 897,566 | 1,046,158 | 1,259,641 | 1,718,240 |
| Southern | 542,187 | 596,758 | 741,377 | 1,106,602 |
| Western | 195,023 | 316,312 | 554,243 | 950,924 |
| Totals | 2,180,355 | 2,735,159 | 3,515,812 | 4,963,298 |
2004 figures are provisional.