A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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| Place Name | County | Place Type | Post Office Dates | More Information |
| Iago, Igo | Rooks | Lost Town | ||
| Iatan Ferry | Lost Place | NA | This ferry operated 1855-61 on Missouri River. Formerly Daugherty’s Landing, Nimrod Farley, proprietor. | |
| Iantha or Ianthe | Anderson | Lost Town | Laid out in 1856; was the first town laid out in the county, The name was changed to Kansas City, and the townsite was abandoned in 1858. | |
| Ibaton | Jewell | Lost Town | ||
| Ida | Harper | Lost Town | Near Albion. | |
| Ida | Republic | Lost Town | Located in 1872; abandoned in 1882; named for Miss Ida Williams, daughter of a pioneer settler. | |
| Idell | Crawford | Lost Town | 1870-1901 | Idell was situated on Hickory Creek, 12 miles southwest of Girard. |
| Independence Crossing | Marshall | Lost Place | This was the crossing of the Big Blue River. It also had a trading post six miles south of Marysville, in 1848. | |
| Independence Spring | Atchison | Lost Town | P.O. 1855. | |
| Indian City | Linn | Lost Town | Two miles west of Prescott. | |
| Indian Creek | Elk | Lost Town | Discontinued 1882. | |
| Indian Creek | Linn | Lost Town | 1862-1868 | |
| Indian Creek Campground | Johnson | Lost Place | This emigrant staging area extended several miles from the Missouri State line in a southwest direction and included Indian Creek and its several branches. West of Little Santa Fe the trail from Independence paralleledTomahawk Creek, a southern branch of Indian Creek, to the divide east of Lone Elm Campground. | |
| Indiana City | Osage | Name Change | Now Scranton. | |
| Indianapolis | Miami | Lost Town | P.O. 1859. | |
| Indianola | Butler | Lost Town | ||
| Indianola | Shawnee | Lost Town | Incorporated 1855, vacated 1889. | |
| Industry | Dickinson | Lost Town | ||
| Inez | Sherman | Lost Town | ||
| Ingalls | Lincoln | Lost Town | ||
| Ingleton/Arnold | Crawford | Lost Town | 1871-1872 | The name was changed from Arnold to Ingleton on February 26, 1872. |
| Ingo | Barber | Lost Town | ||
| Inland | Greenwood | Lost Town | 1862-1863 | |
| Inman | Pratt | Lost Town | Established 1879. | |
| Inver | Atchison | Lost Town | ||
| Invermay | Atchison | Lost Town | 1882-1897 | |
| Inyo | Harper | Lost Town | ||
| Iola | Doniphan | Lost Town | ||
| Iowa | Ness | Lost Town | ||
| Iowa City, Iowa Creek | Crawford | Lost Town | 1867 1870-1877 |
Iowa City was situated two miles southeast of Pittsburg. |
| Irish Creek | Marshall | Lost Place | Located on the south fork of the Black Vermillion River, this was located on the crossing of the Parallel Road In 1859. It was probably the Gilliam Company campsite on June 4, 1844. | |
| Island City | Geary | Lost Town | 1855 | |
| Italia, Florence | Lyon | Name Change | Now Neosho Rapids. | |
| Ivanhoe | Haskell | Lost Town | Vacated 1903. | |
| Ivanpah | Greenwood | Lost Town | 1879-1904 | |
| Ives | Montgomery | Lost Town | ||
| Ivy/Bunker Hill | Lyon | Lost Town | 1870 1871-1896 |
The post office in Bunker Hill was only open for four months in 1870. It was reopened in 1871 and renamed Ivy. |
| Iwacura | Clay | Lost Town | ||
| Jackson | Linn | Lost Town | 1858-1859 1862-1872 |
Jackson was the first post office established in Liberty Township on June 30, 1858. |
| Jackson County | Jackson | Current County | NA | One of the original 36 counties, it was created in 1855. It was originally called Calhoun County. Holton is the county seat. |
| Jackson’s Mills | Wilson | Lost Town | ||
| Jacksonville | Multiple | Lost Town | On corner of four counties — Cherokee, Crawford, Labette, and Neosho. | |
| Jacksonville | Jefferson | Lost Town | 1883-1887 | |
| Jacksonville | Smith | Lost Town | ||
| Jaggard | Leavenworth | Lost Town | 1889-1905 | On the Atchison, Topeka & Santa Fe Railroad two miles northwest of Bonner Springs |
| Jamaica | Greenwood | Lost Town | ||
| James Crossing | Jackson | Lost Town | James’ Crossing was established in 1862 on Soldier Creek, John James, Proprietor & postmaster. Post village in 1864. On post road from Atchison to Louisville in 1864. | |
| Jamesburg | Sedgwick | Lost Town | ||
| Jamestown Ferry | Doniphan | Lost Place | Established 1841 at Jamestown Landing on the Missouri River about 7.5 miles above St. Joseph, Missouri near the mouth of Dillon Creek. | |
| Janesville | Greenwood | Lost Town | 1860-1880 | |
| Jarbalo | Leavenworth | Extinct Town | 1872-1958 | There are still several homes in the community as well as an active church. |
| Jarvis View, Jarvis Creek | Rice | Lost Town | East of Lyons on Santa Fe Trail. | |
| Jasper | Linn | Lost Town | 1898-1901 | |
| Jay | Leavenworth | Lost Town | 1898-1902 | Located about six miles southwest of Easton. |
| Jay Eu | Republic | Lost Town | ||
| Jay Hawk | Chautauqua | Name Change | The name changed to Matanzas. | |
| Jeddo | Allen | Lost Town | ||
| Jefferson | Republic | Lost Town | ||
| Jefferson City | Jefferson | Lost Town | 1864-1865 | |
| Jefferson County | Jefferson | Current County | One of the original 36 counties, it was created in 1855. Oskaloosa is the county seat. | |
| Jeffersonville | Cowley | Lost Town | 1870-1872 | The post office moved to Lazette. |
| Jerome | Anderson | Name Change | The name changed to Central City. | |
| Jerome | Atchison | Lost Town | ||
| Jerusalem | Johnson | Lost Town | 1895-1900 | Located two miles northeast of Gardner. |
| Jewell Center | Jewell | Name Change | Now Mankato. | |
| Jewell County | Jewell | Current County | NA | Created from unorganized area in 1867. Mankato is the county seat. |
| Jimtown | Phillips | Lost Town | Seven miles north of Phillipsburg. | |
| Johnson | Crawford | Name Change | Now Drywood. | |
| Johnson County | Johnson | Current County | NA | One of the original 36 counties, it was created in 1855. Olathe is the county seat. |
| Johnson/Veteran | Stanton | Name Change | 1887-Present 1886-1887 |
Town was initially called Veteran. Changed to Johnson in 1887 |
| Johnsonville | Jewell | Lost Town | ||
| Jonestown | Allen | Lost Town | Nine miles east of Iola. | |
| Jordon Springs | Reno | Lost Town | Thirty miles southwest of Hutchinson. | |
| Journeycake, Johnny Cake | Leavenworth | Name Change | Also Johnny Cake. Indian village, stage station, and post office. Was later called Stranger and now Linwood. | |
| Joy | Lyon | Lost Town | ||
| Joy Creek | Washington | Lost Town | ||
| Judson | Smith | Lost Town | ||
| Julian | Montgomery | Lost Town | A paper town. | |
| Junction | Leavenworth | Lost Town | On the Missouri River. | |
| Juniata, Dyers’ Town | Pottawatomi | Lost Town | P.O. 1855; on the east side of the Blue River. Changed to Tauromee, on the west side of the Big Blue River, 1856; abolished in 1858. | |
| Jurett | Wilson | Lost Town |