ZIP Code 61560
About Putnam
Putnam is an unincorporated community in Putnam County, Illinois, United States. The community is located to the west of Senachwine Lake along Illinois Route 29, north of Henry. This village of some 100 people was originally called Senachwine, after the great Indian Chief Senachwine.
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Area Profile
US Census (ACS 5-year · Gazetteer)
586
population
$74,643
median household income
17
people / sq mi
$229,800
median home value
63.6
median age
636
housing units
324
households
34.6
land area (sq mi)
Key places in 61560
- Lake Senachwine Conservation Area park