ZIP Code 61489
About Williamsfield
Williamsfield is a village in Knox County, Illinois, United States. The population was 575 at the 2020 census. It is part of the Galesburg Micropolitan Statistical Area.
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Area Profile
US Census (ACS 5-year · Gazetteer)
743
population
$83,625
median household income
16
people / sq mi
$131,300
median home value
$644
median gross rent
44.2
median age
376
housing units
299
households
47.1
land area (sq mi)