ZIP Code 62689
About Thayer
Thayer is a village in Sangamon County, Illinois, United States. As of the 2020 census, Thayer had a population of 632. It is part of the Springfield, Illinois Metropolitan Statistical Area.
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Area Profile
US Census (ACS 5-year · Gazetteer)
627
population
$59,583
median household income
548
people / sq mi
$85,800
median home value
$880
median gross rent
40.6
median age
292
housing units
261
households
1.1
land area (sq mi)