Vermont's population in 1998 was 590,883 as estimated by the U.S. Bureau of the Census. This is a 5.0 percent increase from the 1990 Census count of 562,758, and an increase of 1905 people from last year's estimate of 588,978
The largest segment of the population is the 35 to 44-year-old age group, and has been since 1991. The fastest growing segment of the population is the 45 to 64-year-old group, with a 32.1 percent increase since the 1990 Census. The under 5-year-old segment of Vermont's population is shrinking as a result of declining birth rates, showing a decrease of 22.0 percent since the 1990 Census.
The sex distribution of Vermonters has remained basically the same as 1990, with males outnumbering females up to age 24, females slightly outnumbering males from age 25 to 39, males slightly outnumbering females between ages 40 and 49, and females outnumbering males by a widening margin as age increases after age 50. The age-sex distribution of Vermont is illustrated in Figure 3.
More detailed population information has been published in the Vermont 1998 Population and Housing Estimates.