Population Forecast
5 year Forecast - 2.5%
The current population of the Casper, WY Market is 321,395 as of the January 2026 PopStats estimate. PopStat’s Trend models indicate a 5 year population change of 2.5%, resulting in a Population of 329,535 by January 2031. This percentage change in Population ranks 83rd across STI Markets. The Casper, WY Market currently ranks 165th in overall population, and will rank 164th by January 2031.
High and Low Range - -1.7% to 5.7%
While the summation of mid range 5 year forecasts foresee a change in Population of 2.5% for Casper, WY Market. The forecast high ranges of these forecasts leaves open the possibility for a Population change as high as 5.7% at 339,873. Similarly a population change as low as -1.7% at 315,805 is not without possibility.
Figure 73: Population Trend and Forecast
10 year Projections - 5.6%
By January 2036 we project the Population of the Casper, WY Market to be 339,464 resulting in a change of 5.6% compared to the current Population. This projected percentage change in Population ranks 81st across STI Markets. The Casper, WY Market currently ranks 165th in overall population, and will rank 163rd by January 2036.
