ZIP Code 61435
About Gerlaw
Gerlaw is an unincorporated community in Warren County, Illinois, United States. Gerlaw is 6 miles (9.7 km) north-northeast of Monmouth.
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Area Profile
US Census (ACS 5-year · Gazetteer)
181
population
10
people / sq mi
25.7
median age
71
housing units
51
households
17.4
land area (sq mi)