Denton County Population 2018
Denton County's estimated population is 836,210 with a growth rate of 3.45% in the past year according to the most recent United States census data. Denton County is the 9th largest county in Texas.
| Year | Population | Growth | Growth Rate |
| 2017 | 836,210 | 27,911 | 3.45% |
| 2016 | 808,299 | 28,727 | 3.68% |
| 2015 | 779,572 | 26,061 | 3.46% |
| 2014 | 753,511 | 24,498 | 3.36% |
| 2013 | 729,013 | 20,874 | 2.95% |
| 2012 | 708,139 | 22,205 | 3.24% |
| 2011 | 685,934 | 19,184 | 2.88% |
| 2010 | 666,750 | 393,225 | 143.76% |
| 1990 | 273,525 | 130,399 | 91.11% |
| 1980 | 143,126 | 67,493 | 89.24% |
| 1970 | 75,633 | 28,201 | 59.46% |
| 1960 | 47,432 | 6,067 | 14.67% |
| 1950 | 41,365 | 7,707 | 22.90% |
| 1940 | 33,658 | 836 | 2.55% |
| 1930 | 32,822 | -2,533 | -7.16% |
| 1920 | 35,355 | 4,097 | 13.11% |
| 1910 | 31,258 | 2,940 | 10.38% |
| 1900 | 28,318 | 7,029 | 33.02% |
| 1890 | 21,289 | 3,146 | 17.34% |
| 1880 | 18,143 | 10,892 | 150.21% |
| 1870 | 7,251 | 2,220 | 44.13% |
| 1860 | 5,031 | 4,390 | 684.87% |
| 1850 | 641 | 0.00% |