Sampling and Weighting Technical Report, Census of Population, 2021
Appendix C – Constraints used in or excluded from the weighting process

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The following is a list of the possible constraints defined at the aggregate dissemination area (ADA) and super aggregate dissemination area (SADA) levels. A total of 271 possible constraints were defined at the ADA level and 203 at the SADA level. The table includes the number of times the constraint was calibrated on and the number of times it was excluded. In total, 408 SADAs and 4,207 ADAs were subjected to the weighting processes. The constraints HHADACSD and PPADACSD, while labelled ADA constraints, could possibly be calibrated for multiple census subdivisions within an ADA.

Table C.1
Statistics on the use of calibration constraints, by constraint
Table summary
This table displays the results of Statistics on the use of calibration constraints. The information is grouped by Constraint variable name (appearing as row headers), Description, Coverage and non-response adjustment and Final calibration (appearing as column headers).
Constraint variable name Description Coverage and non-response adjustment Final calibration
Area Number of calibrated constraints Number of excluded constraints Area Number of calibrated constraints Number of excluded constraints
ADULTCF Adults in a census family SADA 155 253 SADA 8 400
AGE00_14 Persons aged 0 to 14 years SADA 350 58 Both 4,360 255
AGE14 Persons aged 10 to 14 years SADA 264 144 Both 1,022 3,593
AGE15_24 Persons aged 15 to 24 years SADA 317 91 SADA 312 96
AGE15_29 Persons aged 15 to 29 years Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,059 148
AGE19 Persons aged 15 to 19 years SADA 82 326 Both 710 3,905
AGE24 Persons aged 20 to 24 years SADA 79 329 Both 726 3,889
AGE25_34 Persons aged 25 to 34 years SADA 384 24 SADA 385 23
AGE29 Persons aged 25 to 29 years SADA 365 43 Both 1,426 3,189
AGE30_49 Persons aged 30 to 49 years Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,143 64
AGE34 Persons aged 30 to 34 years SADA 380 28 Both 1,736 2,879
AGE35_44 Persons aged 35 to 44 years SADA 405 3 SADA 402 6
AGE39 Persons aged 35 to 39 years SADA 389 19 Both 1,706 2,909
AGE4 Persons aged 0 to 4 years SADA 277 131 Both 796 3,819
AGE44 Persons aged 40 to 44 years SADA 388 20 Both 1,547 3,068
AGE45_54 Persons aged 45 to 54 years SADA 383 25 SADA 381 27
AGE49 Persons aged 45 to 49 years SADA 373 35 Both 1,520 3,095
AGE50_64 Persons aged 50 to 64 years Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,022 185
AGE54 Persons aged 50 to 54 years SADA 378 30 Both 1,665 2,950
AGE55_64 Persons aged 55 to 64 years SADA 393 15 SADA 365 43
AGE59 Persons aged 55 to 59 years SADA 382 26 Both 1,685 2,930
AGE64 Persons aged 60 to 64 years SADA 379 29 Both 1,743 2,872
AGE65PL Persons aged 65 years and older SADA 406 2 Both 4,295 320
AGE74 Persons aged 65 to 74 years SADA 406 2 Both 2,428 2,187
AGE75PL Persons aged 75 years and older SADA 404 4 Both 2,320 2,295
AGE9 Persons aged 5 to 9 years SADA 288 120 Both 776 3,839
APT5PLUS Households living in an apartment in a building that has 5 or more storeys SADA 261 147 Both 1,210 3,405
APTLT5 Households living in an apartment in a building with less than five storeys SADA 401 7 Both 2,585 2,030
CHILD Children in a census family SADA 93 315 SADA 13 395
CHILDFAM Census families with children SADA 238 170 Both 3,056 1,559
COMLAWNO_DIV Divorced persons not in a common-law couple SADA 369 39 Both 1,190 3,425
COMLAWNO_OTHERS Divorced, separated or widowed persons not in a common-law couple SADA 369 39 Both 3,097 1,518
COMLAWNO_SEP Separated persons not in a common-law couple SADA 292 116 Both 575 4,040
COMLAWNO_SINGLE Never-married persons not in a common-law couple SADA 261 147 Both 3,648 967
COMLAWNO_SINGLE_GE15 Never-married persons aged 15 years and older not in a common-law couple SADA 259 149 Both 3,656 959
COMLAWNO_SINGLE_LT15 Never-married persons aged less than 15 years not in a common-law couple SADA 350 58 Both 4,360 255
COMLAWNO_WID Widowed persons not in a common-law couple SADA 290 118 Both 679 3,936
COMLAWYE_MARRIED Persons married or in a common-law couple SADA 245 163 Both 3,370 1,245
COMLAW_YE Persons in a common-law couple SADA 260 148 Both 2,739 1,876
COUPLE Persons in a couple (married or common-law) SADA 156 252 SADA 33 375
EMPIN_GT50 Persons with an annual employment income above the 50th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,127 80
EMPIN_LE50 Persons with an annual employment income equal to or below the 50th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,135 72
EMPIN_P0 Persons with no annual employment income, at the ADA level Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,143 64
EMPIN_P0_GE15 Persons aged 15 years and older with no annual employment income, at the ADA level Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,057 150
EMPIN_P0_LT15 Persons aged less than 15 years with no annual employment income, at the ADA level Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,033 174
EMPIN_P100 Persons with an annual employment income above the 75th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 3,707 500
EMPIN_P25 Persons with an annual employment income equal to or below the 25th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 2,922 1,285
EMPIN_P50 Persons with an annual employment income above the 25th percentile and equal to or below the 50th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 2,918 1,289
EMPIN_P75 Persons with an annual employment income above the 50th percentile and equal to or below the 75th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 3,708 499
EMPIN_SADA_GT50 Persons with an annual employment income above the 50th percentile for the SADA SADA 408 0 SADA 324 84
EMPIN_SADA_LE50 Persons with an annual employment income equal to or below the 50th percentile for the SADA SADA 407 1 SADA 292 116
EMPIN_SADA_P0 Persons with no annual employment income, at the SADA level SADA 407 1 SADA 360 48
EMPIN_SADA_P0_GE15 Persons aged 15 years and older with no annual employment income, at the SADA level SADA 351 57 SADA 328 80
EMPIN_SADA_P0_LT15 Persons aged less than 15 years with no annual employment income, at the SADA level SADA 350 58 SADA 327 81
EMPIN_SADA_P100 Persons with an annual employment income above the 75th percentile for the SADA SADA 407 1 SADA 295 113
EMPIN_SADA_P25 Persons with an annual employment income equal to or below the 25th percentile for the SADA SADA 272 136 SADA 126 282
EMPIN_SADA_P50 Persons with an annual employment income above the 25th percentile and equal to or below the 50th percentile for the SADA SADA 271 137 SADA 145 263
EMPIN_SADA_P75 Persons with an annual employment income above the 50th percentile and equal to or below the 75th percentile for the SADA SADA 407 1 SADA 288 120
FEMALE Women+ SADA 403 5 Both 4,365 250
FEMALEGE15 Females aged 15 years and older SADA 371 37 Both 3,744 871
FEMALELT15 Females aged less than 15 years SADA 368 40 Both 3,636 979
HHADA Households in the ADA ADA 3,592 615 Note ...: not applicable Note ...: not applicable Note ...: not applicable
HHADACSD Households that fall within the CSD and the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,866 2,066
HHINC_GT50 Households with an annual income above the 50th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,178 29
HHINC_LE50 Households with an annual income at or below the 50th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,178 29
HHINC_P100 Households with an annual income above the 75th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,033 174
HHINC_P25 Households with an annual income at or below the 25th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,052 155
HHINC_P50 Households with an annual income above the 25th percentile and at or below the 50th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,052 155
HHINC_P75 Households with an annual income above the 50th percentile and at or below the 75th percentile for the ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,033 174
HHINC_SADA_GT50 Households with an annual income above the 50th percentile for the SADA SADA 408 0 SADA 364 44
HHINC_SADA_LE50 Households with an annual income at or below the 50th percentile for the SADA SADA 408 0 SADA 364 44
HHINC_SADA_P100 Households with an annual income above the 75th percentile for the SADA SADA 406 2 SADA 320 88
HHINC_SADA_P25 Households with an annual income at or below the 25th percentile for the SADA SADA 408 0 SADA 372 36
HHINC_SADA_P50 Households with an annual income above the 25th percentile and at or below the 50th percentile for the SADA SADA 408 0 SADA 352 56
HHINC_SADA_P75 Households with an annual income above the 50th percentile and at or below the 75th percentile for the SADA SADA 406 2 SADA 333 75
HHSIZE1 One-person households SADA 259 149 Both 888 3,727
HHSIZE2 Two-person households SADA 237 171 Both 3,904 711
HHSIZE3 Three-person households SADA 288 120 Both 3,391 1,224
HHSIZE4 Four-person households SADA 389 19 Both 3,527 1,088
HHSIZE5 Five-person households SADA 193 215 Both 848 3,767
HHSIZEGE5 Five-or-more-person households SADA 7 401 Both 135 4,480
HHSIZEGE6 Six-or-more-person households SADA 15 393 Both 42 4,573
INEFAM Persons in an economic family SADA 282 126 SADA 177 231
IR_LINK_NO Persons who could not be linked to the Indian Register SADA 152 256 Both 403 4,212
IR_LINK_YE Persons who could be linked to the Indian Register SADA 152 256 Both 334 4,281
LIM_NO Persons not in a low income household (after tax) SADA 403 5 Both 2,820 1,795
LIM_YE Persons in a low income household (after tax) SADA 403 5 Both 2,820 1,795
LONEPAR Parents in one-parent families SADA 159 249 SADA 14 394
MALE Men+ SADA 403 5 Both 4,365 250
MALEGE15 Males aged 15 years and older SADA 362 46 Both 3,708 907
MALELT15 Males aged less than 15 years SADA 360 48 Both 3,606 1,009
MARRIED Married persons SADA 373 35 Both 2,831 1,784
NB_NOTINCF Persons not in a census family SADA 220 188 Both 3,732 883
NOCLDFAM Census families without children SADA 223 185 Both 1,630 2,985
NOINEFAM Persons not in an economic family SADA 282 126 SADA 177 231
NOINEFAMHHSIZEEQ1 Persons not in an economic family - In a one-person household SADA 259 149 SADA 50 358
NOINEFAMHHSIZEGT1 Persons not in an economic family - In a two-or-more-person household SADA 205 203 SADA 59 349
NOTINFAM Persons not in a census family SADA 220 188 SADA 174 234
NOTINFAMHHSIZEEQ1 Persons not in a census family - In a one‑person household SADA 259 149 SADA 50 358
NOTINFAMHHSIZEGT1 Persons not in a census family - In a two‑or‑more‑person household SADA 163 245 SADA 32 376
OLN_BI Official languages—English and French SADA 301 107 Both 1,859 2,756
OLN_EN Official language—English SADA 69 339 Both 495 4,120
OLN_FR Official language—French SADA 80 328 Both 552 4,063
OLN_NO Official language—neither SADA 157 251 Both 248 4,367
POBG2_1 Place of birth—Albania SADA 0 408 Both 5 4,610
POBG2_10 Place of birth—Brazil SADA 16 392 Both 58 4,557
POBG2_11 Place of birth—Bulgaria and Romania SADA 26 382 Both 52 4,563
POBG2_16 Place of birth—Democratic Republic of the Congo and Republic of the Congo SADA 1 407 Both 9 4,606
POBG2_17 Place of birth—Cameroon, Central African Republic, Chad and Gabon SADA 2 406 Both 12 4,603
POBG2_18 Place of birth—Angola, and Sao Tome and Principe SADA 0 408 Both 1 4,614
POBG2_19 Place of birth—Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan SADA 0 408 Both 2 4,613
POBG2_20 Place of birth—Chile SADA 1 407 Both 9 4,606
POBG2_21 Place of birth—China, Hong Kong, Macao and Taiwan SADA 83 325 Both 162 4,453
POBG2_22 Place of birth—Colombia, Ecuador and Peru SADA 47 361 Both 107 4,508
POBG2_24 Place of birth—Czech Republic, Hungary and Slovakia SADA 9 399 Both 16 4,599
POBG2_25 Place of birth—Burundi and Rwanda SADA 2 406 Both 4 4,611
POBG2_26 Place of birth—Eritrea, Kenya, Tanzania, Uganda and Zambia SADA 19 389 Both 51 4,564
POBG2_27 Place of birth—Comoros, Djibouti, Madagascar, Malawi, Mauritius, Seychelles, Somalia and Zimbabwe SADA 6 402 Both 16 4,599
POBG2_28 Place of birth—Belarus, Moldova, Russian Federation and Ukraine SADA 37 371 Both 67 4,548
POBG2_29 Place of birth—Egypt, South Sudan and Sudan SADA 13 395 Both 10 4,605
POBG2_3 Place of birth—Australia and New Zealand SADA 0 408 Both 3 4,612
POBG2_30 Place of birth—Ethiopia SADA 10 398 Both 12 4,603
POBG2_31 Place of birth—France, Luxembourg and Monaco SADA 18 390 Both 32 4,583
POBG2_32 Place of birth—Cambodia, Laos and Viet Nam SADA 16 392 Both 24 4,591
POBG2_33 Place of birth—Cuba, Dominican Republic and Haiti SADA 8 400 Both 13 4,602
POBG2_34 Place of birth—Greece SADA 2 406 Both 10 4,605
POBG2_35 Place of birth—Guyana and Suriname SADA 18 390 Both 39 4,576
POBG2_36 Place of birth—Holy See (Vatican City State), Italy and San Marino SADA 29 379 Both 47 4,568
POBG2_37 Place of birth—Bahamas, Jamaica and Puerto Rico SADA 43 365 Both 71 4,544
POBG2_38 Place of birth—Antigua and Barbuda, Aruba, Barbados, Bonaire, Sint Eustatius and Saba, Curaçao, Dominica, Grenada, Saint Kitts and Nevis, Saint Lucia, Sint Maarten (Dutch part), Saint Vincent and the Grenadines, Trinidad and Tobago, and United States Virgin Islands SADA 8 400 Both 15 4,600
POBG2_39 Place of birth—Japan SADA 12 396 Both 18 4,597
POBG2_4 Place of birth—Austria, Germany and Liechtenstein SADA 19 389 Both 47 4,568
POBG2_40 Place of birth—North Korea and South Korea SADA 10 398 Both 19 4,596
POBG2_41 Place of birth—Liberia SADA 0 408 Both 2 4,613
POBG2_42 Place of birth—Algeria, Libya, Morocco and Tunisia SADA 14 394 Both 10 4,605
POBG2_43 Place of birth—Brunei Darussalam, Indonesia, Malaysia, Philippines, Singapore and Timor-Leste SADA 96 312 Both 118 4,497
POBG2_45 Place of birth—Mexico SADA 12 396 Both 26 4,589
POBG2_46 Place of birth—Bahrain, Qatar, Saudi Arabia, United Arab Emirates and Yemen SADA 16 392 Both 27 4,588
POBG2_47 Place of birth—Lebanon, Syria SADA 26 382 Both 49 4,566
POBG2_48 Place of birth—Afghanistan, Cyprus, Iran, Iraq, Israel, Jordan, Kuwait, Oman, Turkey, and West Bank and Gaza Strip (Palestine) SADA 87 321 Both 107 4,508
POBG2_50 Place of birth—Mozambique SADA 0 408 Both 1 4,614
POBG2_51 Place of birth—Nepal SADA 1 407 Both 2 4,613
POBG2_54 Place of birth—Poland SADA 37 371 Both 52 4,563
POBG2_55 Place of birth—Oceania region (excluding Australia and New Zealand) SADA 0 408 Both 2 4,613
POBG2_56 Place of birth—Portugal SADA 30 378 Both 40 4,575
POBG2_57 Place of birth—Argentina, Bolivia, Paraguay and Uruguay SADA 2 406 Both 2 4,613
POBG2_59 Place of birth—Namibia and Republic of South Africa SADA 0 408 Both 2 4,613
POBG2_6 Place of birth—Belgium and Netherlands SADA 4 404 Both 9 4,606
POBG2_60 Place of birth—Sri Lanka SADA 7 401 Both 16 4,599
POBG2_63 Place of birth—Armenia, Azerbaijan and Georgia SADA 0 408 Both 1 4,614
POBG2_64 Place of birth—Bangladesh, India and Pakistan SADA 39 369 Both 69 4,546
POBG2_65 Place of birth—Union of Soviet Socialist Republics, Former SADA 5 403 Both 17 4,598
POBG2_66 Place of birth—Guernsey, Ireland, Isle of Man, Jersey, Sark and United Kingdom SADA 5 403 Both 0 4,615
POBG2_67 Place of birth—United States SADA 171 237 Both 245 4,370
POBG2_68 Place of birth—Venezuela SADA 4 404 Both 6 4,609
POBG2_69 Place of birth—Gambia, Ghana, Nigeria and Sierra Leone SADA 4 404 Both 3 4,612
POBG2_7 Place of birth—Belize, El Salvador, Guatemala and Honduras SADA 8 400 Both 15 4,600
POBG2_70 Place of birth—Benin, Burkina Faso, Côte d'Ivoire, Guinea, Mali, Mauritania, Niger, Senegal and Togo SADA 2 406 Both 2 4,613
POBG2_71 Place of birth—Bosnia and Herzegovina, Croatia, Kosovo, Republic of Macedonia, Montenegro, Serbia, and Slovenia SADA 40 368 Both 65 4,550
POBG2_9 Place of birth—Botswana, Lesotho and Swaziland SADA 1 407 Both 0 4,615
POBG3_10 Place of birth—Northern Europe SADA 220 188 Both 275 4,340
POBG3_12 Place of birth—Oceania SADA 29 379 Both 48 4,567
POBG3_14 Place of birth—South America SADA 151 257 Both 214 4,401
POBG3_15 Place of birth—Southeast Asia SADA 204 204 Both 517 4,098
POBG3_16 Place of birth—Southern Africa SADA 13 395 Both 33 4,582
POBG3_17 Place of birth—Southern Asia SADA 181 227 Both 648 3,967
POBG3_18 Place of birth—Southern Europe SADA 160 248 Both 173 4,442
POBG3_19 Place of birth—Union of Soviet Socialist Republics, Former SADA 88 320 Both 142 4,473
POBG3_2 Place of birth—Caribbean and Bermuda SADA 130 278 Both 162 4,453
POBG3_20 Place of birth—United States SADA 171 237 Both 245 4,370
POBG3_21 Place of birth—Western Africa SADA 65 343 Both 83 4,532
POBG3_22 Place of birth—Western Europe SADA 169 239 Both 265 4,350
POBG3_3 Place of birth—Central Africa SADA 11 397 Both 18 4,597
POBG3_4 Place of birth—Central America SADA 79 329 Both 94 4,521
POBG3_5 Place of birth—Eastern Africa SADA 61 347 Both 107 4,508
POBG3_6 Place of birth—Eastern Asia SADA 164 244 Both 570 4,045
POBG3_7 Place of birth—Eastern Europe (excluding Union of Soviet Socialist Republics, Former) SADA 116 292 Both 157 4,458
POBG3_8 Place of birth—West Central Asia and the Middle East SADA 141 267 Both 330 4,285
POBG3_9 Place of birth—Northern Africa SADA 69 339 Both 132 4,483
PPADA Persons in the ADA ADA 3,222 985 Note ...: not applicable Note ...: not applicable Note ...: not applicable
PPADACSD Persons with geographic overlap between CSD and ADA Note ...: not applicable Note ...: not applicable Note ...: not applicable ADA 4,830 2,102
SNGLDET Households living in a single-detached house SADA 399 9 Both 3,639 976
TOTCFAM Census families SADA 367 41 Both 1,244 3,371
TOTHHLD Households SADA 408 0 Both 4,615 0
TOTPERS Persons SADA 408 0 Both 4,615 0
TPERGE15 Persons aged 15 years and older SADA 350 58 Both 4,360 255
TPERLT15 Persons less than 15 years of age SADA 350 58 Both 4,360 255
YRIMD_1900 Immigrants who landed prior to 1981 SADA 333 75 SADA 191 217
YRIMD_1980 Immigrants who landed from 1980 to 1985 SADA 194 214 SADA 100 308
YRIMD_1986 Immigrants who landed from 1986 to 1990 SADA 179 229 SADA 121 287
YRIMD_1991 Immigrants who landed from 1991 to 1995 SADA 202 206 SADA 97 311
YRIMD_1996 Immigrants who landed from 1996 to 2000 SADA 197 211 SADA 94 314
YRIMD_2001 Immigrants who landed from 2001 to 2005 SADA 243 165 SADA 115 293
YRIMD_2006 Immigrants who landed from 2006 to 2010 SADA 246 162 SADA 133 275
YRIMD_2011 Immigrants who landed from 2011 to 2015 SADA 233 175 SADA 168 240
YRIMD_2016 Immigrants who landed from 2016 to 2021 SADA 271 137 SADA 161 247
YRIMD_M3 Persons with no year of immigration SADA 119 289 SADA 65 343
YRIMD_M5 Persons with no year of immigration SADA 192 216 SADA 148 260
YRIMG1_1900 Immigrants who landed prior to 1981 SADA 333 75 SADA 191 217
YRIMG1_1980 Immigrants who landed from 1980 to 1990 SADA 254 154 SADA 143 265
YRIMG1_1991 Immigrants who landed from 1991 to 2000 SADA 251 157 SADA 127 281
YRIMG1_2001 Immigrants who landed from 2001 to 2010 SADA 300 108 SADA 142 266
YRIMG1_2011 Immigrants who landed from 2011 to 2015 SADA 233 175 SADA 168 240
YRIMG1_2016 Immigrants who landed from 2016 to 2021 SADA 271 137 SADA 161 247
YRIMG1_M3 Persons with no year of immigration SADA 119 289 SADA 65 343
YRIMG1_M5 Persons with no year of immigration SADA 192 216 SADA 148 260
... not applicable
CSD = Census subdivision
SADA = Super aggregate dissemination area
ADA = Aggregate dissemination area
Both = SADA and ADA
Men+ = includes men (and/or boys), as well as some non-binary persons
Women+ = includes women (and/or girls), as well as some non-binary persons
Source: Statistics Canada, 2021 Census long-form sample.

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