Jefferson Park is Community Area 11 of the city's official 77 neighborhoods.

Its approximate boundaries are Lawrence Ave (4800 N) east of Central Ave (5600 W) and Gunnison St (4832 N) west of Central north to Bryn Mawr Ave (5600 N) west of Austin Ave (6000 W) and forest preserves east of Austin. East - west boundaries are Leclaire Ave (5100 W) and Metra RR tracks west to Narragansett Ave (6400 W) south of Bryn Mawr Ave and to Austin north of Bryn Mawr.

Gladstone Park is a sub-neighborhood of Jefferson Park.

ZIP code: 60630