Hammond is a village in Piatt County, Illinois, home to about 617 people across 0.8 square miles. Its ZIP code is 61929.
Homes sold for a median of $34 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Hammond; also LaPlace
Each card is that ZIP code’s whole market, including any part outside Hammond. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | St. Louis Lambert International Airport (STL)120 miles away |
|---|---|
| Closer regional airport | Decatur Airport (DEC)15 miles away |
| Nearest city of 250,000+ | St. Louis, MO120 miles away |
| Nearest city of 1 million+ | Chicago, IL149 miles away |
Straight-line distances from the center of Hammond; 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.
Hammond had 508 residents in the 2020 census, down 2% since 2000.
It’s the 863rd largest of 1,450 towns in Illinois by population.
Piatt County grew from 17,706 residents in 1900 to 16,673 in 2020.
Piatt 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 18°F. About 40.6 inches of rain and melted snow fall in a typical year, with about 17 inches of snow.
Source: NOAA 1991–2020 climate normals, Tuscola, IL weather station (15 miles away).
2,535 jobs at 339 businesses in Piatt 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.
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Shares ZIP codes with LaPlace.
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.