This parcel, bounded by Irving Park on the north, Grace on the south, Pulaski on the east and Kostner on the west was part of his original 320-acre (130 ha) farm.

An agreement was reached with the Chicago and Northwestern Railroad allowing their trains to stop in Irving Park if the developers would build a station.

Another early home, built for Erastus Brown, father of John and Adalbert, also remains at 3812 N. Pulaski Road although greatly altered.

Jensen's spectacular personal residence in the Colonial Revival style built in 1905 still stands in the Old Irving Park neighborhood on North Lowell Avenue.

The 1880s found residents beginning to miss some of advantages they had left behind in the city, and in 1889 the community, along with the rest of Jefferson Township, was annexed to Chicago.

Water piped to the area from Lake Michigan, and the establishments of a fire department and streetcar service along major streets were some of the improvements to occur during the first year after annexation.

Subdivided by John Gray, the first Republican sheriff of Cook County, on a portion of his extensive farm, it grew around the Grayland station of the Milwaukee Road Railroad, which is still in active use today.

Gray's first home built in 1856 at 4362 W. Grace survives today in a remarkable state of preservation and is the oldest house in Irving Park.

Gray later built a lavish mansion on the northwest corner of Milwaukee and Lowell to reflect his new-found wealth and it was a community showplace.

West Walker is located between Montrose Avenue and Irving Park Road and is characterized by large single family homes in late Victorian, Foursquare and Revival styles.

Several large apartment buildings, featuring elaborate wrought-iron fencing, fountains and terra cotta details were constructed primarily north of Irving Park Boulevard.

The early 1980s saw a rebirth for Irving Park as a wider audience discovered the beautiful homes and rich history of the area.

The Irving Park Historical Society was formed in 1984, to help preserve the neighborhood's heritage and its irreplaceable architecture, which has survived since the late 19th century.

Its borders are Montrose to the north, Addison to its south, Pulaski Road to the east and Cicero to the west, those of the original two farms that developed here in the 1870s.

The Villa district (Polish: Polskie Wille) - (Pulaski Road to the west, Addison to the south, Avondale Avenue to the north and east), was built in 1902 by a number of architects, many of them visibly influenced by Frank Lloyd Wright's Prairie Style of architecture.

Kilbourn Park (Milwaukee to the north, Belmont to the south, the Union Pacific/Northwest rail line to the east, and Cicero to the west) is a primarily middle class residential and industrial area.

Although technically part of the Irving Park community area, the neighborhood is more akin to neighboring Avondale in terms of both its built environment and the sociology of its residents.

The name "Little Cassubia" was coined by locals because of the Kaszub people living in the area, who also founded the Roman Catholic Parish of Immaculate Heart of Mary.