Online Historical Indiana Plat Maps

Plat maps are wonderful, not only to jump-start the process by narrowing down when your ancestor owned the land, but to see at a glance who your ancestor's neighbors were (which is especially helpful when doing collateral research).

Due to their large size and often fragile condition, historical plat maps for Indiana are not likely to have been digitized, so as a general rule you must visit local libraries and archives to view them. However, here are some notable exceptions.

Unless otherwise noted, these resources are free. ($ indicates a paid resource.)

NOTE: Some atlases are listed twice in Ancestry; they are in two different collections. It may or may not be a different atlas.

This list was updated 12 May 2016. Our thanks to Meredith Thompson for compiling this list.

ALLEN COUNTY:
- 1860 map (Genealogy Center, Allen County Public Library)
- 1898 atlas (Internet Archive)
- 1898 atlas (Ancestry.com - $)

BARTHOLOMEW COUNTY:
- 1879 atlas (Library of Congress)
- 1879 atlas (IUPUI - Historic Indiana Atlases)

BENTON COUNTY:
- 1888 atlas (Indiana State Library - Map Collection)
- 1909 atlas (Ancestry.com - $)

BOONE COUNTY:
- 1865 map (Library of Congress)
- 1878 atlas (IUPUI - Historic Indiana Atlases)
- 1878 atlas (Ancestry.com - $)
- 1904 atlas (Ancestry.com - $)

CARROLL COUNTY:
- 1874 atlas (Indiana State Library - Map Collection)
- 1897 map (Library of Congress)
- 1898 map (Library of Congress)

CASS COUNTY:
- 1878 atlas (Internet Archive)
- 1916 atlas (Ancestry.com - $)

CLARK COUNTY:
- 1875 map (Library of Congress)

CLINTON COUNTY:
- 1865 map (Library of Congress)
- 1878 atlas (Ancestry.com - $)
- 1919 atlas (Ancestry.com - $)

DAVIESS COUNTY:
- 1888 atlas (Ancestry.com - $)
- 1888 atlas (Ancestry.com - $) 

DEARBORN COUNTY:
- 1859 map (Library of Congress)
- 1875 atlas (Library of Congress)
- 1899 atlas (Indiana State Library - Map Collection)

DECATUR COUNTY:
- 1867 map (Library of Congress)
- 1882 atlas (IUPUI - Historic Indiana Atlases)
- 1882 atlas (Ancestry.com - $)

DEKALB COUNTY:
- 1863 map (Library of Congress)
- 1880 atlas (Ancestry.com - $)

DELAWARE COUNTY:
- 1887 atlas (Ball State University)

ELKHART COUNTY:
- 1874 atlas (Ancestry.com - $)
- 1874 atlas (Ancestry.com - $)
- 1915 atlas (Ancestry.com - $)
- 1915 atlas (Ancestry.com - $)
- 1929 atlas (Ancestry.com - $)
- 1937 atlas (Ancestry.com - $)

FAYETTE COUNTY:
- 1875 atlas (Ancestry.com - $)

FLOYD COUNTY:
- 1859 map (Library of Congress)
- 1882 map (Library of Congress)

FOUNTAIN COUNTY:
- 1865 map (Library of Congress)

FRANKLIN COUNTY:
- 1858 map (Genealogy Center, Allen County Public Library)
- 1882 atlas (Ancestry.com - $)

FULTON COUNTY:
- 1883 atlas (IUPUI - Historic Indiana Atlases)

GIBSON COUNTY:
- 1881 atlas (Ancestry.com - $)
- 1899 atlas (Library of Congress)
- 1899 atlas (Indiana State Library - Map Collection)

GRANT COUNTY:
- 1861 map (Library of Congress)
- 1877 atlas (Ancestry.com - $)
- 1877 atlas (Ancestry.com - $)

GREENE COUNTY:
- 1879 atlas (Ancestry.com - $)
- 1879 atlas (Ancestry.com - $)

HAMILTON COUNTY:
- 1866 map (Library of Congress)
- 1880 atlas (IUPUI - Historic Indiana Atlases)
- 1922 atlas (IUPUI - Historic Indiana Atlases)

HANCOCK COUNTY:
- 1887 atlas (Ancestry.com - $)
- 1906 atlas (IUPUI - Historic Indiana Atlases)

HARRISON COUNTY:
- 1882 atlas (Ancestry.com - $)
- 1906 atlas (Ancestry.com - $)
- 1906 atlas (Ancestry.com - $)

HENDRICKS COUNTY:
- 1852-1943 plat maps (Hendricks County Government Archive)
- 1865 map (Library of Congress)
- 1865 map (Hendricks County Government Archive)
- 1878 atlas (IUPUI - Historic Indiana Atlases)
- 1878 atlas (Hendricks County Government Archive)
- 1878 atlas (Ancestry.com - $)
- 1904 atlas (Hendricks County Government Archive)
- 1904 atlas (Ancestry.com - $)

HENRY COUNTY:
- 1857 map (Library of Congress)
- 1875 atlas (Library of Congress)
- 1875 atlas (IUPUI - Historic Indiana Atlases)
- 1893 atlas (Ancestry.com - $)
- 1893 atlas (Ancestry.com - $)

HOWARD COUNTY:
- 1877 atlas (IUPUI - Historic Indiana Atlases)
- 1877 atlas (Ancestry.com - $)
- 1877 atlas (Ancestry.com - $)

HUNTINGTON COUNTY:
- 1866 map (Library of Congress)
- 1879 atlas (Ancestry.com - $)

JACKSON COUNTY:
- 1878 atlas (Indiana State Library - Map Collection)
- 1900 atlas (Indiana State Library - Map Collection)

JASPER COUNTY:
- 1909 atlas (Ancestry.com - $)

JAY COUNTY:
- 1881 atlas (Internet Archive)
- 1887 atlas (Ancestry.com - $)

JENNINGS COUNTY:
- 1884 atlas (IUPUI - Historic Indiana Atlases)
- 1884 atlas (Ancestry.com - $)

JOHNSON COUNTY:
- 1866 map (Library of Congress)
- 1900 atlas (IUPUI - Historic Indiana Atlases)
- 1900 atlas (Indiana State Library - Map Collection)

KNOX COUNTY:
- 1880 atlas (Ancestry.com - $)
- 1937 atlas (Ancestry.com - $)

KOSCIUSKO COUNTY:
- 1866 map (Library of Congress)
- 1879 atlas (Library of Congress)
- 1909 map (Library of Congress)
- 1914 atlas (Ancestry.com - $)
- 1914 atlas (Ancestry.com - $)

LAGRANGE COUNTY:
- 1874 atlas (Internet Archive)
- 1874 atlas (Ancestry.com - $)
- 1893 atlas (Library of Congress)
- 1893 atlas (Internet Archive)
- 1893 atlas (Ancestry.com - $)

LAPORTE COUNTY:
- 1862 map (Library of Congress)
- 1874 atlas (Ancestry.com - $)
- 1892 atlas (Ancestry.com - $)
- 1921 atlas (Ancestry.com - $)

MADISON COUNTY:
- 1880 atlas (Ancestry.com - $)
- 1901 atlas (IUPUI - Historic Indiana Atlases)
- 1901 atlas (Ancestry.com - $)

MARION COUNTY:
- 1855 map (Library of Congress)
- 1866 map (Library of Congress)
- 1889 atlas (Indiana State Library - Map Collection)
- 1931 map (Indiana State Library - Map Collection)

MARSHALL COUNTY:
- 1908 atlas (Ancestry.com - $)

MARTIN COUNTY:
- 1892 map (IGS County Records - free)

MIAMI COUNTY:
- 1877 atlas (Ancestry.com - $)
- 1877 atlas (Ancestry.com - $)

MONROE COUNTY:
- 1856 map (Indiana University - Indiana Spatial Data Portal; NOTE: you will need to download the map)

MONTGOMERY COUNTY:
- 1864 map (Library of Congress)
- 1878 atlas (Ancestry.com - $)
- 1898 atlas (Library of Congress)
- 1917 atlas (Ancestry.com - $)
- 1917 atlas (Ancestry.com - $)

MORGAN COUNTY:
- 1875 map (Library of Congress)
- 1909 map (Library of Congress)

NEWTON COUNTY:
- 1916 atlas (Ancestry.com - $)
- 1916 atlas (Ancestry.com - $)

NOBLE COUNTY:
- 1860 map (Library of Congress)
- 1874 atlas (Internet Archive)
- 1893 atlas (Library of Congress)
- 1914 atlas (Ancestry.com - $)

OHIO COUNTY:
- 1883 atlas (Ancestry.com - $)

PARKE COUNTY:
- 1874 atlas (Parke County GenWeb)
- 1874 atlas (Ancestry.com - $)
- 1908 atlas (Ancestry.com - $)

PERRY COUNTY:
- 1894 map (Library of Congress)

PIKE COUNTY:
- 1881 atlas (Ancestry.com - $)

PORTER COUNTY:
- 1876 atlas (Library of Congress) 
- 1895 atlas (Library of Congress)

POSEY COUNTY:
- 1900 atlas (Ancestry.com - $)

PULASKI COUNTY:
- 1907 atlas (Ancestry.com - $)

PUTNAM COUNTY:
- 1864 map (Library of Congress)
- 1879 atlas (IUPUI - Historic Indiana Atlases)
- 1879 atlas (Ancestry.com - $)
- 1879 atlas (Ancestry.com - $)

RANDOLPH COUNTY:
- 1865 map (Library of Congress)
- 1874 atlas (Ancestry.com - $)
- 1874 atlas (Ancestry.com - $)

RIPLEY COUNTY:
- 1883 atlas (Ancestry.com - $)
- 1884 atlas (Ancestry.com - $)
- 1900 atlas (Ancestry.com - $)
- 1921 atlas (Ancestry.com - $)

RUSH COUNTY:
- 1856 map (Library of Congress)
- 1867 map (Library of Congress) 
- 1879 atlas (IUPUI - Historic Indiana Atlases)
- 1879 atlas (Ancestry.com - $)
- 1908 atlas (Ancestry.com - $)

SHELBY COUNTY:
- 1866 map (Library of Congress)
- 1880 atlas (IUPUI - Historic Indiana Atlases)
- 1880 atlas (Ancestry.com - $)
- 1900 atlas (Indiana State Library - Map Collection)
- 1957 atlas (Ancestry.com - $)

SPENCER COUNTY:
- 1879 atlas (Ancestry.com - $)
- 1896 atlas (Ancestry.com - $)

STARKE COUNTY:
- 1898 map (Library of Congress)

STEUBEN COUNTY:
- 1880 atlas (Library of Congress)
- 1880 atlas (Internet Archive)
- 1912 atlas (Internet Archive)
- 1912 atlas (Ancestry.com - $)

ST. JOSEPH COUNTY:
- 1863 map (Library of Congress)
- 1875 atlas (Internet Archive)
- 1875 atlas (Ancestry.com - $)
- 1875 atlas (Ancestry.com - $)
- 1895 atlas (Ancestry.com - $)
- 1911 atlas (Ancestry.com - $)
- 1911 atlas (Ancestry.com - $)

SULLIVAN COUNTY:
- 1899 atlas (Indiana State Library - Map Collection)

SWITZERLAND COUNTY:
- 1883 atlas (Ancestry.com - $)

TIPPECANOE COUNTY:
- 1866 map (Library of Congress)
- 1878 atlas (Ancestry.com - $)
- 1878 atlas (Ancestry.com - $)
- 1913 atlas (Ancestry.com - $)
- 1920 atlas (Ancestry.com - $)

UNION COUNTY:
- 1884 atlas (IUPUI - Historic Indiana Atlases)
- 1884 atlas (Ancestry.com - $)
- 1884 atlas (Ancestry.com - $)

VANDERBURGH COUNTY:
- 1880 atlas (Ancestry.com - $)
- 1899 atlas (Indiana State Library - Map Collection)
- 1903 atlas (Ancestry.com - $)

VERMILLION COUNTY:
- 1872 map (Library of Congress)

VIGO COUNTY:
- 1858 map (Library of Congress)
- 1874 atlas (Ancestry.com - $)
- 1874 atlas (Ancestry.com - $)
- 1895 atlas (Ancestry.com - $)
- 1895 atlas (Ancestry.com - $)

WABASH COUNTY:
- 1861 map (Library of Congress)
- 1875 atlas (Internet Archive)
- 1875 atlas (Ancestry.com - $)
- 1875 atlas (Ancestry.com - $)

WARREN COUNTY:
- 1865 map (Library of Congress)

WARRICK COUNTY:
- 1880 atlas (Ancestry.com - $)
- 1880 atlas (Ancestry.com - $)
- 1899 atlas (Indiana State Library - Map Collection)
- 1903 atlas (Ancestry.com - $)

WAYNE COUNTY:
- 1874 atlas (Ancestry.com - $)
- 1874 atlas (Ancestry.com - $)
- 1893 atlas (Ancestry.com - $)
- 1893 atlas (Ancestry.com - $)

WELLS COUNTY:
- 1881 atlas (Library of Congress)

WHITE COUNTY:
- 1896 atlas (Ancestry.com - $)
- 1920 atlas (Ancestry.com - $)

WHITLEY COUNTY:
- 1902 map (Library of Congress)
- 1916 atlas (Ancestry.com - $)
- 1916 atlas (Ancestry.com - $)

Close-up of portion of the Dearborn Co, Indiana plat map, 1860. Library of Congress.