Historic Plat Map Viewer

Use this Historic Plat Map Viewer application to put maps of Rochester in different eras side-by-side to compare the building and street layouts and understand how things have changed. Click on the "Map List" button at the top corner of each of the two map views to see and select the map options. There is a slider button (the rounded rectangle in the center of the screen) that will allow you to change the relative proportions of the side-by-side maps -- click on it, and pull to the left or right to resize. Use the + and - sign buttons to zoom in or out (or use the scroll bar on your mouse if you have one). Information About the Map Options 1888 A mosaic of 37 scanned and georeferenced plat maps of the City of Rochester, NY, from 1888. Citation: Robinson's Atlas of the City of Rochester, Monroe County, New York, 1888 1900 A mosaic of 34 scanned and georeferenced plat maps of the City of Rochester, NY, from 1900. Citation: Plat book of the City of Rochester, New York. Philadelphia: J.M. Lathrop & Co., 1900. 1910 A mosaic of 45 scanned and georeferenced plat maps of the City of Rochester, NY, from 1910. Citation: Atlas of the City of Rochester, Monroe County, New York G. M. Hopkins Co. 1910 1935 A mosaic of 167 scanned and georeferenced plat maps of the City of Rochester, NY, from 1935 and 1936. Citation: Hopkins, Griffith Morgan, Plat book of the city of Rochester, New York Volumes 1, 2, and 4 Philadelphia: G.M. Hopkins Co., 1935. The original maps and high-resolution scans are available from Rochester Public Library, Local History and Genealogy.