Dennison, Illinois — interactive Google street map, satellite and terrain views, Street View, live National Weather Service conditions and 7-day forecasts, real-time local and world news, and an editorial description of Dennison, Clark County.
| City | Dennison |
| State | Illinois (IL) |
| County | Clark |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 39.460869 |
| Longitude | -87.597802 |
| Population | 280 |
| Density | 8.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 62423 |
| Area Code | 217 |
| County Seat | Marshall |
Dennison is a locality in Clark County, Illinois, United States. It is a small community with a population of 280. The population density is 8.0 people per km². Dennison is located at 39.4609°N, 87.5978°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 62423.
Dennison unfurls itself across the gently rolling terrain of southeastern Illinois, where the land breathes in broad, open exhales under a sky that often stretches from horizon to horizon. It lies 9.8 miles west of Terre Haute, IN (from Terre Haute, IN: bearing 268°T), and is situated 7.0 miles north-east of Marshall. The fields, a patchwork of gold and green depending on the season's mood, give way to stands of mature oak and maple, their branches reaching out like ancient arms. A quiet hum of insect life rises from the tall grasses in the summer heat, a constant, soothing undertone to the rustle of leaves. The air itself carries a certain stillness, a palpable peace that settles on the landscape, broken only by the distant call of a crow or the low rumble of a tractor. The story of Dennison is deeply entwined with the fertile soil that has sustained it for generations, its economy historically rooted in agriculture, with corn and soybeans standing as silent, stoic sentinels in the fields. While the echoes of past industries might linger in the weathered barns and the occasional forgotten implement, the present is a testament to the enduring spirit of farming and the resilient, close-knit character of its people. Dennison’s landscape, a quiet canvas of rural life, holds a subtle beauty, particularly in the soft, diffused light of a cloudy afternoon, when the colors of the fields deepen and the shadows lengthen with a gentle grace.
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This page provides an interactive Google map of Dennison, Illinois with street, satellite and terrain views and integrated Street View imagery. 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 Dennison and Clark County.
Detailed location data for Dennison includes the ZIP code (62423), telephone area code (217), county seat of Clark County (Marshall), and school district assignment. 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 Dennison is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | June 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. |