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Jersey County, Illinois Map

Explore Jersey County, Illinois with this interactive street and satellite map. Browse all 7 cities and towns in Jersey County below.

Interactive Map of Jersey County, Illinois

CountyJersey
StateIllinois (IL)
County SeatJerseyville
CountryUnited States of America
Latitude39.053103
Longitude-90.360392
Cities & Towns7
Area Codes309

About Jersey County, Illinois

Jersey County sprawls across the western edge of Illinois, a land shaped by the patient artistry of water and prairie. Its terrain is a subtle composition of gentle slopes, not the dramatic contours of mountains, but a yielding land that invites the plow and the settlement. The Mississippi River, a grand artery of the continent, forms its western boundary, a constant, immense presence whose moods dictate the very edge of the county. To the east, the Illinois River carves its own definitive line, its confluence with the Mississippi a significant geographical marker that draws the eye. Between these mighty waterways, the land rises and falls in broad, agricultural waves, a horizon of corn and soybean fields that stretches toward the sky, especially vivid in the late afternoon sun when the light turns the green stalks to gold. Neighboring counties are defined by these same natural borders, creating a sense of distinct regional identity that Jersey County shares.

The story of Jersey County is written in the soil and the seasons, a narrative of settlement that began in the early 19th century. Pioneers, drawn by the fertile land and the promise of a new beginning, arrived from the eastern United States and Europe, their labor slowly coaxing order from the wild. The county was formally organized in 1839, a year that marked a formal recognition of its growing community. The establishment of a county seat, a central point around which civic life would coalesce, was a matter of practical necessity and local ambition. Jerseyville, the county seat, emerged as this nucleus, its location chosen for its accessibility and its potential to serve the burgeoning population. Formative episodes in its history are not necessarily grand battles, but the quiet, persistent work of building roads, establishing schools, and organizing communities, the slow, steady accretion of human endeavor against the backdrop of the vast American landscape.

Life in Jersey County today is a continuation of that foundational agricultural spirit, though the threads of its economy have diversified. The land remains paramount, its bounty of grain and livestock a fundamental characteristic. Yet, the county also harbors a quiet industry and the daily rhythms of its towns and villages, each with its own specific character. Jerseyville, as the county seat, serves as a hub for commerce and community, a place where the familiar hum of local business can be felt. Beyond it, smaller localities like Grafton, perched near the Mississippi, offer a different perspective, a place where the river's influence is more immediate and tangible, its shores a popular destination for those seeking a connection to the water. The quality of light here, especially as dusk settles over the fields, is a particular grace, a soft, diffused glow that lends a contemplative mood to the end of the day, a quiet beauty inherent in the ordinary unfolding of life.

Cities and Towns in Jersey County

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About This Jersey County Map Page

This page provides an interactive map of Jersey County, Illinois alongside links to detailed street maps for 7 cities and towns. The county seat is Jerseyville. Each city and town map page includes live weather, local news and precise GPS coordinates.

Location data is sourced from the USGS GNIS database and verified by coordinates, not name matching alone.

Page generatedJune 2026
Location dataUSGS GNIS database; coordinates matched to 2020 US Census records