Northumberland County, Pennsylvania Map
Explore Northumberland County, Pennsylvania with this interactive street and satellite map. Browse all 27 cities and towns in Northumberland County below.
Interactive Map of Northumberland County, Pennsylvania
| County | Northumberland |
| State | Pennsylvania (PA) |
| County Seat | Sunbury |
| Country | United States of America |
| Latitude | 40.840272 |
| Longitude | -76.658667 |
| Cities & Towns | 27 |
| Area Codes | 215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878 |
About Northumberland County, Pennsylvania
Northumberland County occupies a rugged transition where the Appalachian mountain ridges begin to lose their rigid, parallel composure, yielding instead to the broad, fertile floodplains of the Susquehanna River. The landscape is defined by the confluence of the West Branch and the North Branch, two massive arteries of water that meet to carve a wide, heavy channel through the bedrock. To the east, the terrain hardens into the steep, coal-bearing elevations that bridge the gap toward the anthracite fields, while the western and southern reaches flatten into the deep, dark soils of river-bottom farmland. At dusk, the light here possesses a peculiar, bruised quality, catching the mist rising off the river and turning the gray slate of the water into a sheet of polished lead, as if the land itself were exhaling the day’s heat into the cooling air.
Northumberland County emerged as a formal political entity in the late eighteenth century, carved from a sprawling expanse of frontier territory to accommodate the surge of settlers pushing into the Susquehanna Valley. Its formation followed the long, uneasy period of territorial friction between colonial interests and the indigenous populations who had long navigated these waterways. The county seat was established at a strategic point near the river forks, a location chosen for its command over the primary avenues of commerce and travel. The architecture of the older municipal buildings reflects a stubborn, utilitarian grace, constructed with the heavy brick and stone that suggests a desire for permanence in a country that was then still being measured and mapped by surveyors working under the constant threat of isolation.
Economic life in this region has shifted away from the heavy industry and canal-side commerce of previous centuries, moving toward a quieter reliance on regional logistics, healthcare, and the enduring productivity of the valley soil. The character of the county is found in the persistent, functional rhythm of its morning commute and the way the shadows of the ridges lengthen across the fields in the late afternoon, cooling the rows of corn and soybean. There is a perceptible dignity in the way the local residents maintain their property, a quiet adherence to a social order that values the sturdy porch and the well-tended garden over the fleeting fashions of more urbanized centers. When the wind moves down from the mountains, it carries the scent of damp earth and coming rain, reminding anyone who lingers on a sidewalk that the natural world here is not merely a backdrop, but the primary force that dictates the pace of the day.
Cities and Towns in Northumberland County
About This Northumberland County Map Page
This page provides an interactive map of Northumberland County, Pennsylvania alongside links to detailed street maps for 27 cities and towns. The county seat is Sunbury. Each city and town map page includes live weather, local news and precise GPS coordinates.
The Search Maps button below the county map opens USGS topographic maps and aerial imagery as base layers, with a labelled U.S. National Grid (USNG) overlay, a distance and bearing tool, and a single-fix GPS readout giving your USNG grid reference and latitude and longitude.
Location data is sourced from the USGS GNIS database and verified by coordinates, not name matching alone.
| Page generated | September 2026 |
| Location data | USGS GNIS database; coordinates matched to 2020 US Census records |
