Population estimates by nationality (Bahraini/Non-Bahraini), (mid-year estimates,1981; 1990-2011)
| Bahrainis | Non Bahrainis | Total | |
| 1981 | 240.040 | 113.627 | 353.667 |
| 1990 | 310.794 | 173.212 | 484.006 |
| 1991 | 323.303 | 184.732 | 508.035 |
| 1992 | 328.226 | 188.232 | 516.458 |
| 1993 | 336.251 | 193.974 | 530.225 |
| 1994 | 344.479 | 199.887 | 544.366 |
| 1995 | 352.900 | 205.979 | 558.879 |
| 1996 | 361.530 | 212.262 | 573.792 |
| 1997 | 370.377 | 218.738 | 589.115 |
| 1998 | 379.435 | 225.407 | 604.842 |
| 1999 | 388.714 | 232.275 | 620.989 |
| 2000 | 398.221 | 239.361 | 637.582 |
| 2001 | 409.623 | 251.702 | 661.325 |
| 2002 | 427.245 | 283.308 | 710.553 |
| 2003 | 445.631 | 318.885 | 764.516 |
| 2004 | 464.807 | 358.935 | 823.742 |
| 2005 | 484.811 | 404.018 | 888.829 |
| 2006 | 505.671 | 454.751 | 960.422 |
| 2007 | 527.434 | 511.866 | 1.039.300 |
| 2008 | 541.587 | 561.909 | 1.103.496 |
| 2009 | 558.011 | 620.404 | 1.178.415 |
| 2010 | 570.687 | 657.856 | 1.228.543 |
| 2011 | 584.688 | 610.332 | 1.195.020 |
Source: Central Informatics Organization (CIO) – Bahrain
ANNEXED NOTE
1. Technical Notes and Definitions
The table provides mid-year intercensal estimates of Bahrain’s total resident population (nationals and non-nationals)
Reference period: 1991: unknown; April 7th 2001, April 27th 2010.
Implementation method: the Censuses are carried out according to de jure methodology, i.e. counting persons using their usual place of residence irrespective of where are they at census times
Population of reference: all individuals (nationals and non-nationals) present within the State’s borders during time of reference.
Nationality of the person is defined by the passport used to enter the country. A Non-Bahrainis is considered as such depending on the passport used to enter the country (or obtain the visa)
It has to be noticed that the mid-year estimate for 2010 gives a figure lower than that of the census (April 27, 2010)
2. Institution which provides data
Central Informatics Organization, known prior to 2001 as the “Central Statistics Organisation” under the Ministry of Cabinet Affairs
3. Data availability
This data is available on the Central Informatics Organisation (CIO) website. For the Arabic version: (http://www.cio.gov.bh/cio_ara/default.aspx). For the English version: (http://www.cio.gov.bh/CIO_ENG/Default.aspx)
Censuses for 1981 and forward break down the population by nationality, sex and age groups, and are published in PDF format
For 1992-2011 estimates: (http://www.cio.gov.bh/cio_ara/English/Publications/Statistical%20Abstract/ABS2011/CH2/1.pdf)
For 1991-2010 estimates: (http://www.cio.gov.bh/cio_ara/English/Publications/Statistical%20Abstract/ABS2010/CH2/1.pdf)
For 1990-1991 estimates: (http://www.cio.gov.bh/cio_ara/English/Publications/Statistical%20Abstract/ABS2009/Ch2/36.pdf)
For 1981 estimates: (http://www.cio.gov.bh/cio_ara/English/Publications/Statistical%20Abstract/ABS2008/Ch2/2A.pdf)
Data of access: June 2014