2022 Map of Portsmouth

About this map

Portsmouth serves as the central hub of this agricultural landscape along the border of Harrison and Shelby Counties. The town's grid is anchored by essential community landmarks, including the Post Office and Saint Mary's Cemetery located just to the north. This western Iowa terrain is defined by a dense network of drainage, where Pigeon Creek and its tributary Little Pigeon Creek meander through the northern and central sections, while Mosquito Creek cuts across the southeast corner. The land is strictly organized by the Public Land Survey System, with an extensive grid of rural roads like Cedar Road, Apple Road, and Toledo Avenue providing access to farmsteads across Townships 79 and 80 North. The intersection of these county lines and watercourses illustrates the long-standing relationship between the region's topography and its systematic settlement patterns.