Mark is a village in Putnam County, Illinois, home to about 574 people across 1.1 square miles. Its ZIP code is 61340, and parts of 61326 and 61327 are in Mark too.
Mostly Mark
Mostly Granville; part is in Mark
Mostly Hennepin; part is in Mark
Each card is that ZIP code’s whole market, including any part outside Mark. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Chicago O'Hare International Airport (ORD)86 miles away |
|---|---|
| Closer regional airport | General Wayne A. Downing Peoria International Airport (PIA)47 miles away |
| Nearest city of 250,000+ | Chicago, IL91 miles away |
Straight-line distances from the center of Mark; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Mark had 519 residents in the 2020 census, up 6% since 2000.
It’s the 890th largest of 1,450 towns in Illinois by population.
Putnam County grew from 4,746 residents in 1900 to 5,637 in 2020.
Putnam County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 17°F. About 38.9 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Hennepin, IL weather station (4 miles away).
1,267 jobs at 133 businesses in Putnam County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Libraries
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Granville, Hennepin and Standard.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.