MapsPorter County maps . . . .
Porter County Township Plat Maps
Porter County township plat maps are available from 1876, 1895, 1906, 1921, 1938, 1969, 1973, 1974, 1976, and 1988. Original land patent maps are also available to view by township. Township plat maps can be viewed by either year or township.
|Plats by Year||Plats by Township|
|Original Gov't Survey||Boone|
|Original Land Patents||Center|
|1969 (name index)||Pleasant|
|1973 (name index)||Portage|
|1974 (name index)||Porter|
|1976 (name index)||Union|
|1988 (name index)||Washington|
Porter County City and Village Plat Maps
Numerous plat maps of cities, villages, and additions are available on this website. Note that several plats were surveyed and recorded for villages that never came into existence; most of these plats were recorded very early in Porter County's history and were platted as speculative land investments that did not materialize. Other plats were published for small villages that existed but then later became depopulated, largely due to the fact that railroads became less important as a factor in creating and maintaining communities.
Porter County Land Patent Maps and Name Index
Land patents were issued by the General Land Office, conveying property held by the federal government to individuals; these individuals were referred to as patentees. The federal government's original survey of Porter County has been scanned and made available by the Porter County Surveyor's Office. The Porter County Land Patent Name Index provides more than 2,600 land patent records for all land contained within the boundaries of Porter County, Indiana, as well as a link to a copy of each original land patent document. You can also view each township's land patentees by viewing township plat maps that are based on General Land Office data.
Indiana Historical Aerial Photo Index
The Indiana Historical Aerial Photo Index was created by the Indiana Geological Survey. Aerial photographs for Porter County are available for the years of 1939, 1954, 1958, 1965, and 1973. To use the index, choose the county and then choose the year of interest and click the "Zoom to Selection" link. This will result in a map of the county and points were aerial images were taken within the county.
Sanborn™ Fire Insurance Maps
The Sanborn Map Company of Pelham, New York, developed extremely detailed maps
of municipalities located throughout the United States for the purpose of
providing information for the underwriting of fire insurance. In particular, the
maps aided fire insurance
agents in ascertaining the hazard level associated with a specific property.
Maps provide details such as size, shape, and type of construction of dwellings, commercial
structures, and factories, as well as fire walls, locations of windows and doors,
sprinkler systems, and roof types. In addition, property boundaries, widths and names
of streets, current building usage, and house and block numbers are provided on the maps.
Indiana State Library, as well as several other libraries located in Indiana and
elsewhere, maintain a
microfilm set of Sanborn™ fire insurance maps for Indiana municipalities
dating from the 1880s to the middle of the 1950s. The microfilm can be obtained
through interlibrary loan services at most local libraries and found through
an OCLC WorldCat search (use the following keywords in WorldCat: Sanborn fire
insurance maps Indiana). Once obtained through interlibrary loan, a microfilm
printer or microfilm scanner can used to produce either hardcopy or digital copies of
the microfilmed maps. Below are the Sanborn™ fire insurance maps available for
Porter County municipalities:
Porter [see Chesterton for dates after 1899]
Railroad Plat Maps of Porter County
The following files contain scanned images of the original railroad right-of-way plat maps within Porter County. Aside from their obvious historical significance, these maps are very useful in identifying parcel ownerships adjacent to the railroads. The original public documents are available for viewing at the Porter County Surveyor's Office. Note that most of these files are quite large and may take considerable time to download on slower Internet connections, such as dialup.
Baltimore & Ohio & Chicago Railroad (1918 plat)
Chesapeake & Ohio Railway (1916 plat)
Chesterton: East (1923 plat)
Elgin, Joliet & Eastern Railway: Crocker Station (1925 plat)
Elgin, Joliet & Eastern Railway: McCool Station (1924 plat)
Gary Railways: Garyton to Valparaiso (1939 plat)
Grand Trunk Western Railroad (1917 plat)
Lake Shore & Michigan Southern Railway (undated plat, after 1910)
Michigan Central Railroad (1916 plat)
New York, Chicago & St. Louis Railroad (1916 plat)
New York Central Railroad (1927 plat)
Pittsburgh, Cincinnati, Chicago & St. Louis Railroad (1916 plat)
Pittsburgh, Fort Wayne & Chicago Railway (1916 plat)
Wabash Railroad (1919 plat)
Porter County Geographic Information System (GIS)
The Porter County GIS Office, a unit of the Porter County Auditor's Department, provides online access to Porter County GIS information to the general public.
US Geological Survey, Porter County Topographical Maps
Topographical maps (7.5 minute series) prepared by the US Geological Survey that cover the entire area of Porter County are available on this website.