Editing Markham, Illinois (section)

==Geography==
Markham is located at {{Coord|41|35|51|N|87|41|30|W|region:US_type:city|display=inline}} (41.597467, -87.691570).<ref name="GR1">{{cite web|url=https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html|publisher=[[United States Census Bureau]]|access-date=2011-04-23|date=2011-02-12|title=US Gazetteer files: 2010, 2000, and 1990}}</ref>

According to the 2021 census gazetteer files, Markham has a total area of {{convert|5.41|sqmi|km2|2}}, all land.<ref name="gaz2021">{{Cite web |publisher=United States Census Bureau |title=Gazetteer Files |url=https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html |access-date=2022-06-29 |website=Census.gov}}</ref>

===Indian Boundary Prairies===
There are approximately {{convert|500|acre|km2}} of virgin and restored [[prairie]] land located within the boundary of Markham. There are four prairies known as "Dropseed", "Sundrop", "Paintbrush", and "Gensburg". The prairie is under the supervision of [[Northeastern Illinois University]] and [[The Nature Conservancy]]. The [[Gensburg-Markham Prairie]] portion has been designated a [[National Natural Landmark]]. The prairies continue to grow and flourish with the help of the Friends of the Indian Boundary Prairies.<ref name=tnc>{{cite web| title=Nature Conservancy: Indian Boundary Prairies| url=http://www.nature.org/ourinitiatives/regions/northamerica/unitedstates/illinois/placesweprotect/indian-boundary-prairies.xml| publisher=[[The Nature Conservancy]]| access-date=15 December 2012}}</ref>

===Surrounding areas===
<div style= width:500px;">
:{{pad|17em}} [[Midlothian, Illinois|Midlothian]] / [[Posen, Illinois|Posen]]
:{{pad|13em}} [[Midlothian, Illinois|Midlothian]] [[File:Up arrow left.svg|20px]] [[File:Up-1.svg|30px]] [[File:Up arrow right.svg|20px]] [[Harvey, Illinois|Harvey]]
:{{pad|2em}} [[Bremen Township, Illinois|Unincorporated Bremen Township]] [[File:Left.svg|30px]] {{pad|1.5em}}[[File:Right.svg|30px]] [[Harvey, Illinois|Harvey]]
:{{pad|3.8em}} [[Oak Forest, Illinois|Oak Forest]] / [[Country Club Hills, Illinois|Country Club Hills]] [[File:Down arrow left.svg|20px]] [[File:Down arrow.svg|30px]] [[File:Down arrow right.svg|20px]] [[Harvey, Illinois|Harvey]]
:{{pad|18em}} [[Hazel Crest, Illinois|Hazel Crest]]
</div>