The Geographic Information System (GIS) program has been active in Portsmouth NH since the 1990’s. In addition to digital records, the GIS group manages an extensive inventory of maps, plans and figures which date back to the late 1700’s. These records are accessible upon request.

DISCLAIMER: The City of Portsmouth provides Geographic Information System maps and data as a public information service. The maps and data provided are intended for informational purposes only. No guarantee or promise is made as to the accuracy of the maps and data and they should not be relied upon for any purpose other than general information.