
I've added the results of the 2008 census, from source [1]. Sorin Cosoveanu sent me a copy of source [11].
Newsletter II-2, an update to the ISO 3166-2 standard, is dated 2010-06-30. It assigns ISO codes to Bujumbura Mairie and Bujumbura Rural, replacing the old code for Bujumbura.
The latest version of the FIPS standard is called "Geopolitical Entities and Codes", published in 2010-04. It shows the split of Bujumbura into an urban and a rural province.
ISO 3166-2 Newsletter number I-4, dated 2002-12-10, adds the new Mwaro province to the list.
Change Notice 7 to FIPS PUB 10-4 is dated 2002-01-10. It shows the split of Mwaro province from Muramvya. Probably these are the same as the arrondissements of Muramvya and Mwaro, as they stood in 1978. Source [3] is a press release about the vote in the Burundi parliament to split the province of Mwaro from Muramvya. According to it, the creation of two additional provinces, Bukirasazi and Rumonge, was being considered. Bukirasazi would probably have be split from Gitega, and Rumonge from Bururi, if the project had gone through.
Source [4] says (translated), "Burundi is currently divided into administrative structures among which the province is the largest. The country counts fifteen of them, namely, Bubanza, Bujumbura, Bururi, Cankuzo, Cibitoke, Gitega, Karuzi, Kayanza, Kirundo, Makamba, Muramvya, Muyinga, Ngozi, Rutana, and Ruyigi, to which must be added the urban province of Bujumbura. A governor leads each province. The province is subdivided into communes, each directed by a communal administrator. There are 116 of them. This administrative entity is in turn subdivided into administrative zones, and further into collines (literally, 'hills')." This was evidently written before the creation of Mwaro.

| Short name | BURUNDI |
| ISO code | BI |
| FIPS code | BY |
| Languages | Kirundi (rn), French (fr) |
| Time zone | +2 |
| Capital | Bujumbura |
The territory which is now Burundi was part of German East Africa at the beginning of the century. In 1919, Ruanda-Urundi was mandated to Belgium. It consisted of two counties: Ruanda in the north and Urundi in the south. It became administratively part of the Belgian Congo on 1926-03-01. The two counties became résidences (residencies). In 1960, the Belgian Congo became independent; Ruanda-Urundi remained a colony. On 1962-07-01, when Ruanda-Urundi attained independence, the two counties became the countries of Rwanda and Burundi. The capital of Ruanda-Urundi, which had been known as Usumbura, changed its name to Bujumbura and became the capital of Burundi.


Ethnic name Barundi, applied to a country

Burundi is divided into seventeen provinces.
| Province | HASC | ISO | FIPS | Population | Area(km.²) | Area(mi.²) |
|---|---|---|---|---|---|---|
| Bubanza | BI.BB | BB | BY09 | 338,023 | 1,089 | 420 |
| Bujumbura Mairie | BI.BM | BM | BY24 | 497,166 | 87 | 33 |
| Bujumbura Rural | BI.BU | BL | BY25 | 555,933 | 1,089 | 420 |
| Bururi | BI.BR | BR | BY10 | 574,013 | 2,465 | 952 |
| Cankuzo | BI.CA | CA | BY11 | 228,873 | 1,965 | 759 |
| Cibitoke | BI.CI | CI | BY12 | 460,435 | 1,636 | 631 |
| Gitega | BI.GI | GI | BY13 | 725,223 | 1,979 | 764 |
| Karuzi | BI.KR | KR | BY14 | 436,443 | 1,457 | 563 |
| Kayanza | BI.KY | KY | BY15 | 585,412 | 1,233 | 476 |
| Kirundo | BI.KI | KI | BY16 | 628,256 | 1,703 | 658 |
| Makamba | BI.MA | MA | BY17 | 430,899 | 1,960 | 757 |
| Muramvya | BI.MV | MU | BY22 | 292,589 | 696 | 269 |
| Muyinga | BI.MY | MY | BY18 | 632,409 | 1,836 | 709 |
| Mwaro | BI.MW | MW | BY23 | 273,143 | 840 | 324 |
| Ngozi | BI.NG | NG | BY19 | 660,717 | 1,474 | 569 |
| Rutana | BI.RT | RT | BY20 | 333,510 | 1,959 | 757 |
| Ruyigi | BI.RY | RY | BY21 | 400,530 | 2,339 | 903 |
| 17 provinces | 8,053,574 | 25,807 | 9,964 | |||
| ||||||
Note: Bujumbura is the capital of both Bujumbura Mairie and Bujumbura Rural.
See the Communes of Burundi page.
The regions are subdivided into 114 districts, and the districts are subdivided into communes. Before 1979, there were eight provinces, subdivided into 18 arrondissements, which were further divided into 78 communes.

| Province | FIPS | Population | Area(km.²) | Arrondissements |
|---|---|---|---|---|
| Bubanza | BY01 | 293,221 | 2,670 | Bubanza, Cibitoke |
| Bujumbura | BY02 | 386,041 | 1,255 | Bujumbura, Mwisare |
| Bururi | BY03 | 398,614 | 4,680 | Bururi, Makamba |
| Gitega | BY04 | 612,118 | 3,320 | Bukirasazi, Gitega, Karuzi |
| Muramvya | BY05 | 342,722 | 1,510 | Muramvya, Mwaro |
| Muyinga | BY06 | 494,140 | 3,535 | Kirundo, Muyinga |
| Ngozi | BY07 | 714,476 | 2,595 | Kayanza, Ngozi |
| Ruyigi | BY08 | 348,102 | 5,445 | Cankuzo, Rutana, Ruyigi |
| 8 provinces | 3,589,434 | 25,010 | ||
| ||||
BY02, ISO BJ) split into Bujumbura Mairie and
Bujumbura Rural. (One of the meanings of French mairie is "municipal administration".)BY05, HASC code BI.MU).
| Province | 1979-08-16 | 1990-08-16 | 2008-08-16 |
|---|---|---|---|
| Bubanza | 154,093 | 222,953 | 338,023 |
| Bujumbura Mairie | 460,945 | 608,931 | 497,166 |
| Bujumbura Rural | 555,933 | ||
| Bururi | 313,016 | 385,490 | 574,013 |
| Cankuzo | 107,550 | 142,797 | 228,873 |
| Cibitoke | 179,853 | 279,843 | 460,435 |
| Gitega | 471,020 | 565,174 | 725,223 |
| Karuzi | 210,789 | 287,905 | 436,443 |
| Kayanza | 383,085 | 443,116 | 585,412 |
| Kirundo | 289,181 | 401,103 | 628,256 |
| Makamba | 120,897 | 223,799 | 430,899 |
| Muramvya | 377,242 | 441,653 | 292,589 |
| Muyinga | 257,259 | 373,382 | 632,409 |
| Mwaro | 273,143 | ||
| Ngozi | 394,351 | 482,246 | 660,717 |
| Rutana | 141,357 | 195,834 | 333,510 |
| Ruyigi | 167,982 | 238,567 | 400,530 |
| Total | 4,028,420 | 5,292,793 | 8,053,574 |
In the first two censuses, Mwaro is included in Muramvya, and the population for all of Bujumbura is listed under Bujumbura Mairie. The 1979 populations of the provinces add up to 200 more than the total shown, but the same problem occurs in the source.

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