Clearfield County Population 2018
Clearfield County's estimated population is 79,685 with a growth rate of -0.44% in the past year according to the most recent United States census data. Clearfield County is the 36th largest county in Pennsylvania.
| Year | Population | Growth | Growth Rate |
| 2017 | 79,685 | -350 | -0.44% |
| 2016 | 80,035 | -616 | -0.76% |
| 2015 | 80,651 | -296 | -0.37% |
| 2014 | 80,947 | -431 | -0.53% |
| 2013 | 81,378 | 29 | 0.04% |
| 2012 | 81,349 | -15 | -0.02% |
| 2011 | 81,364 | -151 | -0.19% |
| 2010 | 81,515 | 3,418 | 4.38% |
| 1990 | 78,097 | -5,481 | -6.56% |
| 1980 | 83,578 | 8,959 | 12.01% |
| 1970 | 74,619 | -6,915 | -8.48% |
| 1960 | 81,534 | -4,423 | -5.15% |
| 1950 | 85,957 | -6,137 | -6.66% |
| 1940 | 92,094 | 5,367 | 6.19% |
| 1930 | 86,727 | -16,509 | -15.99% |
| 1920 | 103,236 | 9,468 | 10.10% |
| 1910 | 93,768 | 13,154 | 16.32% |
| 1900 | 80,614 | 11,049 | 15.88% |
| 1890 | 69,565 | 26,157 | 60.26% |
| 1880 | 43,408 | 17,667 | 68.63% |
| 1870 | 25,741 | 6,982 | 37.22% |
| 1860 | 18,759 | 6,173 | 49.05% |
| 1850 | 12,586 | 4,752 | 60.66% |
| 1840 | 7,834 | 3,031 | 63.11% |
| 1830 | 4,803 | 2,461 | 105.08% |
| 1820 | 2,342 | 1,467 | 167.66% |
| 1810 | 875 | 0.00% |