Sources: 2000 U.S. Census and 2015 American Community Survey.
The shift in the makeup of Vermont’s age groups, or cohorts, over the last fifteen years has been remarkable. As the baby boomer cohorts have aged an already small base of younger Vermonters has not been augmented by significant in-migration and births. Reductions in the share of 35-49 year olds are particularly remarkable.
Source: US Census (Decennial and 2015 Population Estimates)
Vermont grew rapidly in the late 1700s and early 1800s.From the mid 1800s to 1900s the population remained relatively flat, then grew again in the 1960s-1990s. Growth was fueled by baby boomers and facilitated by developments like the interstate highway system. Since the 1990s Vermont’s population has flattened out again. From 2014 to 2015 Vermont lost 540 people according to census estimates. Although people move in and out of Vermont all the time, net gains are mainly in older cohorts.
Source: United States Census
Population growth comes from “natural increase” (births vs deaths) and migration, typically from other states not foreign countries. Current estimates put Vermont’s growth 2010-2015 at +297 people overall. Net change 2014-2015 was negative. While births outpaced deaths (5,981 vs. 5,295) last year, 1,309 people left in the period from July 2014-2015.