county record · population · Connecticut
Population of Middlesex County, Connecticut
Middlesex County had an estimated population of 162,436 on July 1, 2019, according to the Census Bureau's Population Estimates Program.
What stands out
Middlesex County had an estimated population of 162,436 on July 1, 2019, according to the Census Bureau's Population Estimates Program. Since 2010 that is -1.9 % (-3,180 people). Among the 17 counties in Connecticut, it ranks 13 by population.
Population and components of change, year by year
Estimates are for July 1 of each year. Components cover the estimate year from July 1 of the previous year to June 30; the first year of each vintage (2010, 2020) covers April 1 to June 30 only. Net migration = international + domestic; the residual is not shown.
| Year | Population (July 1) | Change | Births | Deaths | Natural change | International migration | Domestic migration | Net migration | Source |
|---|---|---|---|---|---|---|---|---|---|
| 2019 | 162,436 | -434 | +1,248 | +1,552 | -304 | +237 | -359 | -122 | evidence → |
| 2018 | 162,870 | -72 | +1,274 | +1,578 | -304 | +327 | -87 | +240 | evidence → |
| 2017 | 162,942 | -350 | +1,251 | +1,597 | -346 | +259 | -255 | +4 | evidence → |
| 2016 | 163,292 | -432 | +1,305 | +1,497 | -192 | +264 | -499 | -235 | evidence → |
| 2015 | 163,724 | -1,062 | +1,367 | +1,514 | -147 | +308 | -1,221 | -913 | evidence → |
| 2014 | 164,786 | -543 | +1,382 | +1,493 | -111 | +346 | -770 | -424 | evidence → |
| 2013 | 165,329 | -305 | +1,363 | +1,492 | -129 | +204 | -361 | -157 | evidence → |
| 2012 | 165,634 | -540 | +1,480 | +1,429 | +51 | +304 | -884 | -580 | evidence → |
| 2011 | 166,174 | +558 | +1,533 | +1,460 | +73 | +300 | +192 | +492 | evidence → |
| 2010 Apr–Jun only | 165,616 | — | +356 | +346 | +10 | +63 | -113 | -50 | evidence → |
| Census 2010 (April 1 count) | 165,676 | evidence → | |||||||
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