Mendon, 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 Mendon, Adams County.
| City | Mendon |
| State | Illinois (IL) |
| County | Adams |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 40.08838 |
| Longitude | -91.283756 |
| Population | 1,167 |
| Density | 509.7 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 62351 |
| Area Code | 217 |
| County Seat | Quincy |
| School District | Community Unit School District 4 |
Mendon is a locality in Adams County, Illinois, United States. It has a population of approximately 1,167. The population density is 509.7 people per km². Mendon is located at 40.0884°N, 91.2838°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 62351.
Mendon rests in a broad, fertile valley, a place where the land itself seems to sigh with contentment. It lies 12.5 miles north-north-east of Quincy, IL (from Quincy, IL: bearing 32°T), and is situated 4.5 miles east-north-east of Ursa. Rolling hills, softened by centuries of cultivation, cradle the community, their slopes a patchwork of emerald cornfields and golden wheat, especially vibrant in the late afternoon sun. The air here carries the clean scent of turned earth and distant woodsmoke, a subtle perfume that clings to the quiet streets. A gentle breeze often rustles through the mature oaks that line the main thoroughfare, their leaves whispering secrets of seasons past. The sky above Mendon is vast, an expansive canvas that shifts from the pale blue of morning to the bruised purples and oranges of twilight, a constant, silent spectacle. The economy of Mendon has long been tied to the generous soil, its prosperity built upon the bounty of agriculture. Generations of farming families have worked this land, their labor a continuous thread connecting the present to the past. While the agricultural roots run deep, small businesses now dot the landscape, offering essential services and a friendly face to neighbors and visitors alike. The old brick buildings along Main Street, some bearing the faded signs of businesses long gone, stand as quiet testaments to the town's enduring spirit. Each structure seems to hold a story, a whisper of the lives lived and the work done within its walls, contributing to the unique character of Mendon.
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This page provides an interactive Google map of Mendon, 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 Mendon and Adams County.
Detailed location data for Mendon includes the ZIP code (62351), telephone area code (217), county seat of Adams County (Quincy), and school district assignment (Community Unit School District 4). 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 Mendon 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. |