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| City | Mark |
| State | Illinois (IL) |
| County | Putnam |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 41.26448 |
| Longitude | -89.250087 |
| Population | 574 |
| Density | 189.3 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 61340, 61327 |
| Area Code | 815 |
| County Seat | Hennepin |
| School District | Putnam County Community Unit School District 535 |
Mark is a locality in Putnam County, Illinois, United States. It is a small community with a population of 574. The population density is 189.3 people per km². Mark is located at 41.2645°N, 89.2501°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 61327.
Mark breathes the wide, flat breath of the Illinois prairie, a place where the horizon stretches like an unspooled ribbon and the sky is a vast, ever-changing canvas. It lies 43.2 miles north-north-east of Peoria, IL (from Peoria, IL: bearing 24°T), and is situated 7.6 miles south-west of Peru. The land here is a deep, fertile brown, a promise of bounty that has been cultivated for generations, and the air, especially after a summer rain, carries the clean scent of turned earth and distant cornfields. Roads, straight as an arrow, cut through the amber waves of grain, leading the eye towards the soft, blurred edges of distant farmsteads, their silos like stoic sentinels against the immense sky. Even the wind seems to whisper secrets of the open country, a constant, gentle murmur that rustles through the leaves of the few trees that dare to stand tall against its persistent caress. The story of Mark is deeply entwined with the earth it sits upon, a narrative of agriculture and the quiet industry that has sustained its people. For years, the rhythm of life here was dictated by the planting and harvesting seasons, a dependable cycle that shaped the community's character and its economy. While the echoes of past agricultural endeavors still resonate, the subtle hum of modern life can be heard, a testament to the resilience and adaptability of this prairie settlement. The quality of light at dusk, a slow bleed of orange and rose across the western sky, paints the fields in hues of gold and amethyst, a daily spectacle that seems to imbue Mark with a profound sense of peace, a quiet beauty that unfolds with the setting sun.
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This page provides an embedded street and satellite map of Mark, Illinois — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 41.26448, -89.250087. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Mark and Putnam County.
Detailed location data for Mark includes the ZIP code (61340), telephone area code (815), county seat of Putnam County (Hennepin), and school district assignment (Putnam County Community Unit School District 535). These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Mark is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |