Population Forecast
5 year Forecast - 0.4%
The current population of the Portland-Auburn-Portsmouth, ME-NH Market is 1,171,912 as of the January 2026 PopStats estimate. PopStat’s Trend models indicate a 5 year population change of 0.4%, resulting in a Population of 1,176,503 by January 2031. This percentage change in Population ranks 136th across STI Markets. The Portland-Auburn-Portsmouth, ME-NH Market currently ranks 89th in overall population, and will rank 88th by January 2031.
High and Low Range - -1% to 7.1%
While the summation of mid range 5 year forecasts foresee a change in Population of 0.4% for Portland-Auburn-Portsmouth, ME-NH Market. The forecast high ranges of these forecasts leaves open the possibility for a Population change as high as 7.1% at 1,255,005. Similarly a population change as low as -1% at 1,159,847 is not without possibility.
Figure 73: Population Trend and Forecast
10 year Projections - 0.7%
By January 2036 we project the Population of the Portland-Auburn-Portsmouth, ME-NH Market to be 1,180,071 resulting in a change of 0.7% compared to the current Population. This projected percentage change in Population ranks 136th across STI Markets. The Portland-Auburn-Portsmouth, ME-NH Market currently ranks 89th in overall population, and will rank 90th by January 2036.
