Middlesex County is part of a growing, prosperous region. Middlesex County is projected to grow by 13.8%. The Middlesex/London Region is expected to grow by 8.6%.
This section includes information on the people that make up Middlesex County. Population trends and projections and age breakdowns are detailed below.

|
Middlesex County |
Middlesex & London |
Ontario | |
|---|---|---|---|
| Population | 74,898 | 461,485 | 13,468,348 |
| 0-4 | 4,226 | 26,038 | 787,151 |
| 5-9 | 4,380 | 24,246 | 738,889 |
| 10-14 | 5,060 | 25,984 | 763,862 |
| 15-19 | 5,596 | 30,590 | 870,602 |
| 20-24 | 4,739 | 36,272 | 932,100 |
| 25-29 | 3,798 | 34,671 | 920,915 |
| 30-34 | 4,129 | 31,201 | 930,583 |
| 35-39 | 4,650 | 29,712 | 935,050 |
| 40-44 | 5,347 | 31,405 | 970,611 |
| 45-49 | 6,265 | 35,620 | 1,066,928 |
| 50-54 | 5,847 | 35,254 | 1,004,276 |
| 55-59 | 5,271 | 30,317 | 885,959 |
| 60-64 | 4,691 | 25,813 | 759,087 |
| 65-69 | 3,514 | 19,405 | 583,589 |
| 70-74 | 2,472 | 14,733 | 440,182 |
| 75-89 | 1,889 | 12,254 | 354,763 |
| 80-84 | 1,480 | 9,846 | 270,983 |
| 85+ | 1,544 | 9,122 | 252,816 |
| Manifold Data Mining Superdemographics 2011 | |||
| Population – Past, Present & Projected | |||
|---|---|---|---|
| Municipality | 2006 | 2011 | 2016 |
| Middlesex County | 69,024 | 75,399 | 78,558 |
| Adelaide Metcalfe | 3117 | 3,497 | 3,593 |
| Lucan Biddulph | 4187 | 4,500 | 4,538 |
| Middlesex Centre | 15589 | 16,963 | 18,546 |
| Newbury | 439 | 417 | 460 |
| North Middlesex | 6740 | 7,299 | 7,268 |
| Southwest Middlesex | 5890 | 6,319 | 6,094 |
| Strathroy-Caradoc | 19977 | 21,732 | 22,183 |
| Thames Centre | 13085 | 14,673 | 15,877 |
| Statistics Canada 2006 Census & County of Middlesex Official Plan | |||
|
County of Middlesex Population Projections 2016 to 2026 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|
| Age | 2016 | 2016 | 2016 | 2021 | 2021 | 2021 | 2026 | 2026 | 2026 |
| Female | Male | Total | Female | Male | Total | Female | Male | Total | |
| 0-4 | 1,792 | 1,908 | 3,700 | 1,619 | 1,723 | 3,342 | 1,918 | 2,041 | 3,959 |
| 5-9 | 2,445 | 2,482 | 4,927 | 2,234 | 2,279 | 4,514 | 2,510 | 2,495 | 5,006 |
| 10-14 | 3,075 | 3,224 | 6,299 | 2,781 | 3,096 | 5,878 | 2,802 | 2,972 | 5,775 |
| 15-19 | 2,559 | 2,859 | 5,418 | 2,770 | 2,997 | 5,766 | 2,858 | 3,288 | 6,147 |
| 20-24 | 2,388 | 2,762 | 5,151 | 2,121 | 2,367 | 4,488 | 2,601 | 2,833 | 5,434 |
| 25-29 | 1,846 | 2,081 | 3,927 | 2,175 | 2,414 | 4,589 | 1,998 | 2,180 | 4,177 |
| 30-34 | 2,374 | 2,011 | 4,385 | 2,932 | 2,466 | 5,398 | 2,858 | 2,557 | 5,415 |
| 35-39 | 2,901 | 2,423 | 5,325 | 3,355 | 3,089 | 6,444 | 4,209 | 3,510 | 7,719 |
| 40-44 | 2,484 | 2,311 | 4,795 | 2,616 | 2,376 | 4,992 | 3,697 | 3,530 | 7,227 |
| 45-49 | 2,403 | 2,374 | 4,777 | 2,404 | 2,278 | 4,682 | 2,756 | 2,690 | 5,446 |
| 50-54 | 2,902 | 2,927 | 5,829 | 2,432 | 2,335 | 4,766 | 2,509 | 2,317 | 4,826 |
| 55-59 | 2,937 | 2,848 | 5,785 | 2,840 | 2,820 | 5,659 | 2,388 | 2,352 | 4,740 |
| 60-64 | 2,382 | 2,501 | 4,883 | 2,929 | 2,840 | 5,769 | 2,809 | 2,779 | 5,588 |
| 65-69 | 2,267 | 2,113 | 4,380 | 2,506 | 2,296 | 4,803 | 2,946 | 2,658 | 5,605 |
| 70-74 | 1,699 | 1,488 | 3,187 | 2,162 | 1,940 | 4,102 | 2,407 | 2,098 | 4,505 |
| 75-79 | 1,121 | 1,021 | 2,141 | 1,455 | 1,276 | 2,731 | 1,870 | 1,603 | 3,474 |
| 80-84 | 774 | 652 | 1,426 | 983 | 817 | 1,801 | 1,166 | 985 | 2,150 |
| 85+ | 1,236 | 988 | 2,223 | 1,297 | 770 | 2,068 | 706 | 1,000 | 1,705 |
| Total | 39,583 | 38,974 | 78,558 | 41,611 | 40,180 | 81,791 | 45,008 | 43,889 | 88,896 |
| County of Middlesex Official Plan | |||||||||